/**
 * 查询页样式
 * 
 * 仅包含 query.html 特有的样式
 * 公共样式和变量请查看 common.css
 */

/* 查询页特有变量 */
:root {
    --bg-color: #f5f5f5;
    --container-bg: white;
    --text-color: #333;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --item-bg: #f9f9f9;
    --button-bg: #4a4a4a;
    --button-hover: #5e5e5e;
    --error-bg: #fbe9e9;
    --permanent-announcement-bg: #fff5f5;
    --permanent-announcement-border: #ff4444;
    --permanent-announcement-text: #cc0000;
    --regular-announcement-bg: #f8fff9;
    --regular-announcement-border: #4CAF50;
    --regular-announcement-text: #2d5930;
    --footer-text: #adb5bd;
    --footer-border: #e9ecef;
    --link-color: var(--button-bg);
    --link-hover: var(--button-hover);
    --footer-font-size: 11px;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --container-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --border-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --item-bg: #2a2a2a;
    --button-bg: #5e5e5e;
    --button-hover: #707070;
    --error-bg: #3a1e1e;
    --permanent-announcement-bg: #2a1a1a;
    --permanent-announcement-border: #ff6b6b;
    --permanent-announcement-text: #ff9e9e;
    --regular-announcement-bg: #1a2a1a;
    --regular-announcement-border: #6bff6b;
    --regular-announcement-text: #9eff9e;
    --footer-text: #666;
    --footer-border: #333;
    --link-color: var(--button-bg);
    --link-hover: var(--button-hover);
}

pre {
    font-size: 14px;
    line-height: 1.5;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

body.low-performance-device,
body.low-performance-device * {
    animation-duration: 0s !important;
    transition: none !important;
}

body.low-performance-device .loading-spinner,
body.low-performance-device .ai-followup-loading .loading-spinner {
    animation-duration: 0.8s !important;
    animation-iteration-count: infinite !important;
    animation-timing-function: linear !important;
}

body.low-performance-device .container,
body.low-performance-device .homework-item,
body.low-performance-device .homework-resource-preview,
body.low-performance-device .announcement-banner,
body.low-performance-device .submit-modal-content {
    box-shadow: none !important;
}

body.low-performance-device .resource-preview-modal {
    backdrop-filter: none !important;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--container-bg);
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px var(--shadow-color);
    overflow: hidden;
    position: relative;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.homework-header {
    margin-bottom: 20px;
}

.homework-list {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 0 -10px;
}

.fullscreen-mode .homework-list {
    gap: 10px;
    margin: 0 -5px;
}

.homework-item {
    flex: 1;
    min-width: 250px;
    padding: 12px;
    padding-bottom: 34px;
    border-radius: 5px;
    background-color: var(--item-bg);
    box-shadow: 0 1px 3px var(--shadow-color);
    max-width: 100%;
    margin: 5px;
    transition: background-color 0.3s, box-shadow 0.3s;
    position: relative;
}

.homework-content {
    white-space: pre-line;
    margin-top: 10px;
    padding: 8px;
    background-color: var(--item-bg);
    border-radius: 3px;
    overflow-wrap: break-word;
    word-break: break-word;
    transition: background-color 0.3s;
}

.homework-resources {
    margin-top: 10px;
}

.homework-resources-title {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 12px;
}

.homework-resources-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.homework-resource-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin-top: 12px;
}

.homework-resource-preview {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--container-bg);
    overflow: hidden;
    box-shadow: 0 1px 3px var(--shadow-color);
}

.resource-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    background: var(--item-bg);
}

.resource-preview-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    color: var(--text-color);
    font-size: 13px;
    font-weight: 500;
}

.resource-preview-label i {
    color: var(--text-secondary);
}

.resource-preview-label,
.resource-preview-open {
    white-space: nowrap;
}

.resource-preview-label {
    overflow: hidden;
    text-overflow: ellipsis;
}

.resource-preview-open {
    color: var(--button-bg);
    text-decoration: none;
    font-size: 12px;
    flex-shrink: 0;
}

.resource-preview-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.resource-preview-action {
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--container-bg);
    color: var(--text-color);
    padding: 4px 10px;
    font-size: 12px;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.2s;
}

.resource-preview-action:hover {
    border-color: var(--button-bg);
    transform: translateY(-1px);
}

.resource-preview-open:hover {
    text-decoration: underline;
}

.resource-preview-media {
    display: block;
    width: 100%;
    padding: 0;
    border: 0;
    text-align: left;
    color: inherit;
    font: inherit;
    cursor: pointer;
    background: rgba(0, 0, 0, 0.03);
}

.resource-preview-media img,
.resource-preview-media video,
.resource-preview-media iframe {
    display: block;
    width: 100%;
    border: 0;
}

.resource-preview-media img {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 320px;
    object-fit: contain;
    margin: 0 auto;
}

.resource-preview-video video {
    aspect-ratio: 16 / 9;
    background: #000;
}

.resource-preview-pdf iframe {
    height: 260px;
    background: #fff;
}

.resource-preview-audio {
    padding: 14px 12px;
}

.resource-preview-audio audio {
    width: 100%;
}

.resource-preview-file-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
}

.resource-preview-file-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 48px;
    background: var(--item-bg);
    color: var(--button-bg);
    font-size: 22px;
}

.resource-preview-file-content {
    min-width: 0;
    flex: 1;
}

.resource-preview-file-title {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.resource-preview-file-meta {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-secondary);
}

.resource-preview-modal {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(8, 16, 24, 0.78);
    backdrop-filter: blur(6px);
    z-index: 3000;
}

.resource-preview-modal.active {
    display: flex;
}

.resource-preview-modal-dialog {
    width: 96vw;
    max-width: 1100px;
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 16px;
    background: var(--container-bg);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.resource-preview-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
}

.resource-preview-modal-title {
    min-width: 0;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.resource-preview-modal-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.resource-preview-modal-open {
    color: var(--button-bg);
    text-decoration: none;
    font-size: 13px;
}

.resource-preview-modal-open:hover {
    text-decoration: underline;
}

.resource-preview-modal-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--item-bg);
    color: var(--text-color);
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
}

.resource-preview-modal-body {
    padding: 16px;
    overflow: auto;
    background: rgba(0, 0, 0, 0.04);
}

.resource-preview-modal-image,
.resource-preview-modal-video,
.resource-preview-modal-pdf,
.resource-preview-modal-word,
.resource-preview-modal-audio {
    display: block;
    width: 100%;
}

.resource-preview-modal-image {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: calc(92vh - 120px);
    object-fit: contain;
    margin: 0 auto;
}

.resource-preview-modal-video {
    max-height: calc(92vh - 120px);
    background: #000;
}

.resource-preview-modal-pdf {
    height: calc(92vh - 140px);
    border: 0;
    background: #fff;
}

.resource-preview-modal-audio {
    max-width: 760px;
    margin: 24px auto;
}

.resource-preview-modal-word {
    max-width: 760px;
    margin: 0 auto;
    padding: 22px;
    display: flex;
    align-items: flex-start;
    gap: 18px;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: var(--container-bg);
}

.resource-preview-modal-word-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 64px;
    background: var(--item-bg);
    color: var(--button-bg);
    font-size: 30px;
}

.resource-preview-modal-word-info {
    min-width: 0;
    flex: 1;
}

.resource-preview-modal-word-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
    word-break: break-word;
}

.resource-preview-modal-word-ext {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 52px;
    margin-top: 10px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--item-bg);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.resource-preview-modal-word-hint {
    margin-top: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

body.resource-preview-open {
    overflow: hidden;
}

.homework-resource-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--container-bg);
    color: var(--text-color);
    text-decoration: none;
    font-size: 12px;
    transition: transform 0.2s, border-color 0.2s, background-color 0.2s;
}

.homework-resource-link:hover {
    border-color: var(--button-bg);
    background: rgba(52, 152, 219, 0.08);
    transform: translateY(-1px);
}

.homework-resource-link span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 240px;
}

.hw-submit-btn {
    position: absolute;
    bottom: 10px;
    right: 8px;
    background: #3498db;
    color: white;
    border: none;
    padding: 3px 8px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 11px;
    opacity: 0;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.homework-item:hover .hw-submit-btn {
    opacity: 1;
}

.hw-submit-btn:hover {
    background: #2980b9;
    transform: scale(1.05);
}

/* 已提交状态 */
.hw-submit-btn.submitted {
    background: #27ae60;
    opacity: 1;
}

.hw-submit-btn.submitted:hover {
    background: #219a52;
}

/* 老师视图标签 */
.teacher-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: #e74c3c;
    color: white;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 11px;
}

/* 全屏模式下隐藏提交按钮 */
.fullscreen-mode .hw-submit-btn,
.fullscreen-mode .teacher-badge {
    display: none !important;
}

/* 提交弹窗 */
.submit-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.submit-modal.active {
    display: flex;
}

.submit-modal-content {
    background: var(--container-bg);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 85vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.submit-modal-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.submit-modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: 70vh;
}

.student-submission-list {
    max-height: 300px;
    overflow-y: auto;
}

.student-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

.student-item:last-child {
    border-bottom: none;
}

.score-input {
    width: 60px;
    padding: 4px;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    text-align: center;
}

/* SSO状态栏 */
.sso-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 44px;
    background: #2c3e50;
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
    transform: translateY(-100%);
    transition: transform 0.3s;
}

.sso-bar.active {
    transform: translateY(0);
}

.sso-bar .user {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
}

.sso-bar .role-tag {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 11px;
}

.sso-bar button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 5px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.announcement-banner {
    border-radius: 8px;
    margin: 15px 0;
    padding: 15px 20px;
    background: var(--container-bg);
    border: 2px solid var(--border-color);
    position: relative;
    transition: background-color 0.3s, border-color 0.3s;
}

.permanent-announcement {
    background: var(--permanent-announcement-bg);
    border-left: 4px solid var(--permanent-announcement-border);
    color: var(--permanent-announcement-text);
    margin: 12px 0;
    padding: 15px;
    border-radius: 6px;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: all 0.3s;
}

.regular-announcement {
    background: var(--regular-announcement-bg);
    border-left: 4px solid var(--regular-announcement-border);
    color: var(--regular-announcement-text);
    margin: 12px 0;
    padding: 15px;
    border-radius: 6px;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: all 0.3s;
}

.announcement-item {
    margin: 12px 0;
    line-height: 1.6;
    font-size: 14px;
}

.announcement-title {
    font-weight: 700;
    margin-bottom: 10px;
    font-size: 16px;
    color: inherit;
}

.close-announcement {
    position: absolute;
    top: 10px;
    right: 12px;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 24px;
    cursor: pointer;
    padding: 4px;
    transition: color 0.2s;
    opacity: 0.7;
}

.close-announcement:hover {
    opacity: 1;
}

.announcement-item a {
    color: var(--link-color);
    text-decoration: underline;
    cursor: pointer;
    font-size: 14px;
    word-break: break-word;
    transition: color 0.3s;
}

.announcement-item a:hover {
    color: #666;
    text-decoration: underline;
}

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

.action-button {
    background-color: var(--button-bg);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1.5;
    height: 38px;
    box-sizing: border-box;
    transition: background-color 0.2s;
}

.action-button:hover {
    background-color: var(--button-hover);
}

.loading-status {
    padding: 20px;
    text-align: center;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
}

.loading-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-top-color: var(--button-bg);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.error-message {
    color: #d32f2f;
    padding: 15px;
    background-color: var(--error-bg);
    border-radius: 4px;
    margin: 10px 0;
}

.operation-feedback {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 24px;
    border-radius: 20px;
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 1000;
}

.operation-feedback.visible {
    opacity: 1;
}

body.planner-reminder-open {
    overflow: hidden;
}

.planner-reminder-overlay {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 4200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(8, 16, 24, 0.78);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.planner-reminder-overlay.active {
    display: flex;
}

.planner-reminder-dialog {
    width: calc(100% - 48px);
    max-width: 1180px;
    min-height: 560px;
    max-height: calc(100vh - 48px);
    border-radius: 16px;
    background: var(--container-bg);
    color: var(--text-color);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
    display: flex;
    flex-direction: column;
    outline: none;
    overflow-y: auto;
    box-sizing: border-box;
}

.planner-reminder-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.planner-reminder-header-main {
    min-width: 0;
}

.planner-reminder-kicker {
    color: var(--text-color);
    font-size: 16px;
    font-weight: 600;
}

.planner-reminder-subtitle {
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 13px;
}

.planner-reminder-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--item-bg);
    color: var(--text-color);
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
    flex-shrink: 0;
}

.planner-reminder-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 0;
}

.planner-reminder-panel {
    background: transparent;
    border: none;
    border-radius: 12px;
    padding: 18px 20px;
}

.planner-reminder-note-block {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.planner-reminder-title {
    margin: 0;
    font-size: 34px;
    line-height: 1.25;
    font-weight: 700;
    color: var(--text-color);
    word-break: break-word;
}

.planner-reminder-time {
    margin-top: 12px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
}

.planner-reminder-label {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
}

.planner-reminder-note {
    color: var(--text-color);
    font-size: 18px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
    box-sizing: border-box;
}

.planner-reminder-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.planner-reminder-queue {
    color: var(--text-secondary);
    font-size: 13px;
}

.planner-reminder-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
}

.planner-reminder-primary,
.planner-reminder-secondary {
    min-width: 124px;
}

.planner-reminder-secondary {
    background: var(--button-bg);
}

.planner-reminder-secondary:hover {
    background: var(--button-hover);
}

[data-theme="dark"] .planner-reminder-overlay {
    background: rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] .planner-reminder-close {
    background: var(--secondary-bg);
}

/* 统一页脚基础样式 */
footer {
    text-align: center;
    padding: 15px;
    color: var(--footer-text);
    margin-top: 20px;
    font-size: var(--footer-font-size); /* 使用变量 */
    border-top: 1px solid var(--footer-border);
    transition: color 0.3s, border-color 0.3s;
}

/* 统一统计项和链接样式 */
.stat-item,
.footer-stats a,
.footer-stats a:link,
.footer-stats a:visited {
    font-size: var(--footer-font-size) !important;
    font-weight: normal !important;
    color: var(--footer-text) !important;
    text-decoration: none;
    line-height: 1.5;
}

.footer-stats a:hover {
    text-decoration: underline;
    color: var(--text-color) !important;
}

@media (min-width: 768px) {
    footer {
        position: fixed;
        bottom: 0;
        width: 100%;
    }
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.footer-stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 15px;
    width: 100%;
}

@media (max-width: 768px) {
    .footer-stats {
        width: 100%;
        max-width: 320px;
    }
    
    .footer-stats .stat-item {
        flex: 0 0 auto;
    }
}

.footer-text {
    font-size: 12px;
}

.fullscreen-mode {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--container-bg);
    z-index: 1000;
    padding: 80px 30px 30px 30px;
    overflow: auto;
    --fs-font-scale: 1;
}

.fullscreen-mode .homework-item {
    min-width: 300px;
    margin: 10px;
    padding: calc(25px * var(--fs-font-scale));
    font-size: calc(20px * var(--fs-font-scale));
}

.fullscreen-mode .homework-content {
    font-size: calc(24px * var(--fs-font-scale));
    line-height: 1.6;
    padding: calc(15px * var(--fs-font-scale));
    margin-top: calc(15px * var(--fs-font-scale));
}

.fullscreen-mode .homework-resource-link {
    font-size: calc(18px * var(--fs-font-scale));
    padding: calc(8px * var(--fs-font-scale)) calc(14px * var(--fs-font-scale));
}

.fullscreen-mode .homework-resource-preview-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.fullscreen-close {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #dc3545;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
    z-index: 1002;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.fullscreen-controls {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1002;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.fullscreen-controls .control-label {
    font-size: 14px;
    color: var(--text-color);
}

.fullscreen-controls .control-btn {
    background: var(--button-bg);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: background-color 0.2s;
}

.fullscreen-controls .control-btn:hover {
    background: var(--button-hover);
}

.fullscreen-controls .control-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
    min-width: 50px;
    text-align: center;
}

.fullscreen-controls .control-slider {
    width: 120px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.fullscreen-controls .control-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--button-bg);
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s;
}

.fullscreen-controls .control-slider::-webkit-slider-thumb:hover {
    background: var(--button-hover);
}

.fullscreen-controls .control-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--button-bg);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--button-bg);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transition: background-color 0.3s;
}

.theme-toggle:hover {
    background-color: var(--button-hover);
}

.header-with-button {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.header-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* 学生提交记录样式 */
.submission-record {
    background: var(--item-bg);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
}

.submission-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.score-display {
    background: var(--button-bg);
    color: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    margin: 15px 0;
}

.score-number {
    font-size: 48px;
    font-weight: bold;
}

.comment-box {
    background: var(--item-bg);
    padding: 12px;
    border-radius: 4px;
    margin: 10px 0;
    border-left: 3px solid var(--border-color);
}

.file-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 13px;
    margin-top: 8px;
    background: var(--button-bg);
    color: white;
}

.file-download-btn:hover {
    background: var(--button-hover);
}

/* 班级日期选择器 */
.class-date-selector {
    margin: 15px 0 20px 0;
    padding: 15px;
    background: var(--item-bg);
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.weather-panel {
    margin: 0 0 20px;
    padding: 16px 18px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(74, 74, 74, 0.08), rgba(74, 74, 74, 0.02));
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.weather-panel-inline {
    padding: 12px 16px;
}

.weather-panel.loading,
.weather-panel.error {
    color: var(--text-secondary);
}

.weather-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    flex-wrap: wrap;
}

.weather-panel-title {
    margin: 0;
    font-size: 18px;
    color: var(--text-color);
}

.weather-panel-meta {
    color: var(--text-secondary);
    font-size: 13px;
}

.weather-panel-current {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.weather-panel-main {
    display: flex;
    align-items: center;
    gap: 14px;
}

.weather-panel-icon {
    width: 72px;
    height: 72px;
    object-fit: contain;
    flex: 0 0 auto;
}

.weather-panel-temp {
    font-size: 34px;
    font-weight: 700;
    color: var(--text-color);
}

.weather-panel-desc {
    color: var(--text-secondary);
    font-size: 14px;
}

.weather-forecast-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.weather-forecast-item {
    padding: 12px;
    border-radius: 10px;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
}

.weather-forecast-date {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color);
}

.weather-forecast-desc {
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.5;
}

.weather-panel-scene {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.2);
}

.weather-panel-scene-reduced {
    box-shadow: none;
}

.weather-panel-content {
    position: relative;
    z-index: 6;
    padding: 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(255, 255, 255, 0.36);
}

[data-theme="dark"] .weather-panel-content {
    background: rgba(15, 23, 42, 0.76);
    border-color: rgba(148, 163, 184, 0.24);
}

.weather-panel-content .weather-forecast-item {
    background: rgba(255, 255, 255, 0.68);
    border-color: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .weather-panel-content .weather-forecast-item {
    background: rgba(15, 23, 42, 0.58);
    border-color: rgba(148, 163, 184, 0.18);
}

.weather-planner-root {
    display: grid;
    gap: 16px;
}

.weather-planner-card {
    padding: 16px;
    border-radius: 14px;
    background: var(--item-bg);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

.weather-planner-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.weather-planner-title {
    margin: 0;
    font-size: 18px;
    color: var(--text-color);
}

.weather-planner-subtitle,
.weather-planner-notification,
.weather-planner-summary-item,
.weather-planner-form-hint,
.weather-planner-day-tip-text,
.weather-planner-day-extra,
.weather-planner-todo-meta,
.weather-planner-todo-note,
.weather-planner-empty,
.weather-planner-calendar-status {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
}

.weather-planner-nav {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px;
    border-radius: 999px;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
}

.weather-planner-nav-btn {
    width: 34px;
    height: 34px;
    padding: 0;
    flex: 0 0 34px;
    border: none;
    border-radius: 999px;
    background: var(--button-bg);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    text-align: center;
    box-sizing: border-box;
    appearance: none;
    -webkit-appearance: none;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.weather-planner-nav-btn:hover {
    background: var(--button-hover);
    transform: translateY(-1px);
}

.weather-planner-month {
    min-width: 110px;
    text-align: center;
    font-weight: 600;
    color: var(--text-color);
}

.weather-planner-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
    margin-top: 14px;
}

.weather-planner-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 12px;
}

.weather-planner-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.weather-planner-dot-today {
    background: #2563eb;
}

.weather-planner-dot-holiday {
    background: #ef4444;
}

.weather-planner-dot-compensated {
    background: #f59e0b;
}

.weather-planner-dot-weekend {
    background: #10b981;
}

.weather-planner-dot-normal {
    background: #94a3b8;
}

.weather-planner-weekdays {
    margin-top: 14px;
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    text-align: center;
}

.weather-planner-calendar {
    margin-top: 10px;
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 8px;
}

.weather-planner-day {
    min-height: 0;
    padding: 8px 8px 7px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--container-bg);
    color: var(--text-color);
    text-align: left;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 5px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.weather-planner-day:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
}

.weather-planner-day.is-selected {
    border-color: #2563eb;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.16);
}

.weather-planner-day.is-today {
    outline: 2px solid rgba(37, 99, 235, 0.28);
    outline-offset: 1px;
}

.weather-planner-day-holiday {
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.26);
}

.weather-planner-day-compensated {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.28);
}

.weather-planner-day-weekend {
    background: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.24);
}

.weather-planner-day-normal {
    background: var(--container-bg);
}

.weather-planner-day.has-todo .weather-planner-day-number {
    color: #2563eb;
}

.weather-planner-day-blank {
    visibility: hidden;
    min-height: 0;
}

.weather-planner-day-top,
.weather-planner-day-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    width: 100%;
    min-width: 0;
}

.weather-planner-day-number {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-color);
}

.weather-planner-day-week,
.weather-planner-day-tag,
.weather-planner-day-todo {
    font-size: 11px;
    color: var(--text-secondary);
    min-width: 0;
}

.weather-planner-day-week {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.weather-planner-day-tag {
    min-height: 20px;
    display: block;
    line-height: 1.25;
    word-break: break-word;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.weather-planner-day-todo {
    font-weight: 600;
    display: block;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.weather-planner-day-todo-text-short {
    display: none;
}

.weather-planner-day-todo-empty {
    opacity: 0.72;
}

.weather-planner-day-tip {
    margin-top: 14px;
    padding: 14px;
    border-radius: 12px;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
}

.weather-planner-day-tip-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.weather-planner-day-tip-title {
    color: var(--text-color);
    font-size: 15px;
    font-weight: 700;
}

.weather-planner-day-tip-badge,
.weather-planner-day-tip-count {
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 12px;
}

.weather-planner-day-tip-text,
.weather-planner-day-extra {
    margin-top: 8px;
}

.weather-planner-form {
    margin-top: 14px;
}

.weather-planner-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.weather-planner-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.weather-planner-field-wide {
    grid-column: 1 / -1;
}

.weather-planner-field span {
    color: var(--text-color);
    font-size: 13px;
    font-weight: 600;
}

.weather-planner-field input,
.weather-planner-field textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--input-bg);
    color: var(--text-color);
    font: inherit;
    resize: vertical;
}

.weather-planner-form-actions {
    margin-top: 14px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.weather-planner-secondary {
    background: #64748b;
}

.weather-planner-secondary:hover {
    background: #475569;
}

#plannerTodoCancel {
    background: var(--button-bg);
}

#plannerTodoCancel:hover {
    background: var(--button-hover);
}

.weather-planner-form-hint {
    margin-top: 10px;
}

.weather-planner-todo-summary {
    margin-top: 14px;
    display: grid;
    gap: 6px;
}

.weather-planner-todo-list {
    margin-top: 12px;
    display: grid;
    gap: 10px;
}

.weather-planner-todo-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 14px;
    border-radius: 12px;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
}

.weather-planner-todo-main {
    flex: 1;
    min-width: 0;
}

.weather-planner-todo-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.weather-planner-todo-time {
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.12);
    color: #2563eb;
    font-weight: 700;
    font-size: 12px;
}

.weather-planner-todo-title {
    color: var(--text-color);
    font-weight: 700;
    font-size: 15px;
}

.weather-planner-todo-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.weather-planner-todo-note {
    margin-top: 8px;
    white-space: pre-wrap;
}

.weather-planner-todo-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.weather-planner-link-button {
    border: none;
    background: transparent;
    color: #2563eb;
    cursor: pointer;
    font-size: 13px;
    padding: 0;
}

.weather-planner-link-danger {
    color: #dc2626;
}

.weather-planner-empty,
.weather-planner-calendar-status {
    padding: 14px;
    border-radius: 12px;
    background: var(--container-bg);
    border: 1px dashed var(--border-color);
}

.weather-planner-calendar-error {
    color: #dc2626;
}

.weather-planner-retry {
    margin-top: 10px;
}

[data-theme="dark"] .weather-planner-card {
    box-shadow: 0 8px 20px rgba(2, 6, 23, 0.3);
}

.weather-scene {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.weather-scene-canvas,
.weather-scene-lightning-svg,
.weather-scene-flash {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.weather-scene-canvas {
    z-index: 2;
}

.weather-scene-canvas-mist {
    z-index: 1;
    opacity: 0.08;
}

.weather-scene-canvas-precip {
    z-index: 2;
    opacity: 0.58;
}

body.low-performance-device .weather-scene-canvas-precip {
    opacity: 0.42;
}

.weather-scene-lightning-svg {
    z-index: 3;
    opacity: 0;
    transition: opacity 0.08s linear;
}

.weather-scene-flash {
    z-index: 4;
    opacity: 0;
    background: rgba(255, 255, 255, 0.22);
    mix-blend-mode: screen;
    transition: opacity 0.06s linear;
}

.weather-scene::before {
    content: none;
}

.weather-panel-scene-sunny .weather-scene::before {
    background: linear-gradient(180deg, #7dd3fc 0%, #c0f2ff 44%, #fff3bf 100%);
}

.weather-panel-scene-cloudy .weather-scene::before {
    background: linear-gradient(180deg, #bac7d4 0%, #96a6b6 55%, #7f8e9b 100%);
}

.weather-panel-scene-rain .weather-scene::before {
    background: linear-gradient(180deg, #5b6f86 0%, #35485f 52%, #233447 100%);
}

.weather-panel-scene-storm .weather-scene::before {
    background: linear-gradient(180deg, #3c4662 0%, #24314e 52%, #151d31 100%);
}

.weather-panel-scene-snow .weather-scene::before {
    background: linear-gradient(180deg, #d7e7f3 0%, #bbd0e3 48%, #aabfd5 100%);
}

.weather-panel-scene-sleet .weather-scene::before {
    background: linear-gradient(180deg, #b6cbdb 0%, #7f96a8 52%, #5f7387 100%);
}

.weather-panel-scene-fog .weather-scene::before {
    background: linear-gradient(180deg, #cfd8e2 0%, #b8c4cf 58%, #a3b0bc 100%);
}

.weather-panel-scene-dust .weather-scene::before {
    background: linear-gradient(180deg, #dac3a2 0%, #c4a276 54%, #9f7b56 100%);
}

.weather-scene-window {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 5;
    background:
        linear-gradient(105deg, rgba(255, 255, 255, 0.28) 0%, rgba(255, 255, 255, 0.05) 24%, rgba(255, 255, 255, 0) 40%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.02));
}

#weatherModal .weather-modal-content {
    position: relative;
    width: min(94vw, 920px);
    max-width: 920px;
    max-height: 88vh;
    overflow: hidden;
    isolation: isolate;
}

#weatherModal .submit-modal-body {
    max-height: calc(88vh - 72px);
}

#weatherModal .weather-planner-field input[type="date"],
#weatherModal .weather-planner-field input[type="time"] {
    min-height: 36px;
    padding-top: 7px;
    padding-bottom: 7px;
}

#weatherModal .weather-modal-effect-host {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
    border-radius: inherit;
}

#weatherModal .submit-modal-header,
#weatherModal .submit-modal-body {
    position: relative;
    z-index: 2;
}

.weather-scene-window::before,
.weather-scene-window::after {
    content: "";
    position: absolute;
    top: -8%;
    bottom: -8%;
    width: 1px;
    background: rgba(255, 255, 255, 0.16);
}

.weather-scene-window::before {
    left: 33.333%;
}

.weather-scene-window::after {
    left: 66.666%;
}

.weather-scene-cloud {
    position: absolute;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.22);
    opacity: 0;
    animation: weatherCloudDrift 18s linear infinite;
}

.weather-scene-cloud::before,
.weather-scene-cloud::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    background: inherit;
}

.weather-scene-cloud::before {
    width: 42%;
    height: 130%;
    left: 16%;
    top: -42%;
}

.weather-scene-cloud::after {
    width: 34%;
    height: 112%;
    right: 12%;
    top: -28%;
}

.weather-scene-cloud-a {
    top: 12%;
    left: -8%;
    width: 112px;
    height: 34px;
    animation-delay: -5s;
}

.weather-scene-cloud-b {
    top: 24%;
    left: 28%;
    width: 148px;
    height: 44px;
    animation-duration: 24s;
    animation-delay: -8s;
}

.weather-scene-cloud-c {
    top: 8%;
    right: -10%;
    width: 124px;
    height: 38px;
    animation-duration: 22s;
    animation-delay: -11s;
}

.weather-panel-scene-sunny .weather-scene-cloud {
    opacity: 0.14;
}

.weather-panel-scene-cloudy .weather-scene-cloud,
.weather-panel-scene-rain .weather-scene-cloud,
.weather-panel-scene-storm .weather-scene-cloud,
.weather-panel-scene-snow .weather-scene-cloud,
.weather-panel-scene-sleet .weather-scene-cloud,
.weather-panel-scene-fog .weather-scene-cloud,
.weather-panel-scene-dust .weather-scene-cloud {
    opacity: 0.36;
}

.weather-scene-sun {
    position: absolute;
    top: 18px;
    right: 26px;
    width: 84px;
    height: 84px;
    border-radius: 50%;
    opacity: 0;
    background: radial-gradient(circle, rgba(255, 244, 176, 0.95) 0%, rgba(255, 211, 102, 0.75) 42%, rgba(255, 211, 102, 0) 72%);
    animation: weatherPulse 5s ease-in-out infinite;
}

.weather-panel-scene-sunny .weather-scene-sun {
    opacity: 1;
}

.weather-scene-mist {
    position: absolute;
    left: -12%;
    bottom: -8%;
    width: 124%;
    height: 48%;
    opacity: 0;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.34) 52%, rgba(255, 255, 255, 0.2) 100%);
    animation: weatherMist 9s ease-in-out infinite;
}

.weather-panel-scene-fog .weather-scene-mist,
.weather-panel-scene-dust .weather-scene-mist {
    opacity: 1;
}

.weather-panel-scene-dust .weather-scene-mist {
    background:
        linear-gradient(180deg, rgba(255, 232, 200, 0) 0%, rgba(237, 205, 164, 0.34) 52%, rgba(224, 182, 133, 0.24) 100%);
}

.weather-scene-lightning {
    position: absolute;
    top: -6%;
    right: 8%;
    width: 44%;
    height: 120%;
    opacity: 0;
}

.weather-scene-lightning::before,
.weather-scene-lightning::after {
    content: "";
    position: absolute;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 249, 196, 0.92) 24%, rgba(255, 249, 196, 0) 100%);
}

.weather-scene-lightning::before {
    top: 4%;
    left: 48%;
    width: 18px;
    height: 78%;
    transform: rotate(18deg);
}

.weather-scene-lightning::after {
    top: 22%;
    left: 38%;
    width: 14px;
    height: 52%;
    transform: rotate(-26deg);
}

.weather-panel-scene-storm .weather-scene-lightning {
    animation: weatherLightning 7.2s ease-in-out infinite;
}

.weather-scene-effects {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    overflow: hidden;
}

.weather-scene-particle {
    position: absolute;
    top: -22%;
    opacity: 0.64;
}

.weather-panel-scene-rain .weather-scene-particle,
.weather-panel-scene-storm .weather-scene-particle {
    width: 2px;
    height: 84px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.92) 100%);
    transform: rotate(14deg);
    animation: weatherRain 1.9s linear infinite;
}

.weather-panel-scene-snow .weather-scene-particle {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.42);
    animation: weatherSnow 6.8s linear infinite;
}

.weather-panel-scene-sleet .weather-scene-particle {
    width: 4px;
    height: 22px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.16) 0%, rgba(255, 255, 255, 0.96) 100%);
    animation: weatherSleet 3.4s linear infinite;
}

.weather-panel-scene-dust .weather-scene-particle {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(233, 205, 167, 0.82);
    animation: weatherDust 7.4s linear infinite;
}

.weather-panel-scene-reduced .weather-scene-cloud,
.weather-panel-scene-reduced .weather-scene-mist,
.weather-panel-scene-reduced .weather-scene-sun {
    animation-duration: 0s;
}

body.low-performance-device .weather-panel-scene-reduced .weather-panel-content {
    background: rgba(255, 255, 255, 0.84);
}

[data-theme="dark"] body.low-performance-device .weather-panel-scene-reduced .weather-panel-content {
    background: rgba(15, 23, 42, 0.82);
}

@keyframes weatherRain {
    0% {
        transform: translate3d(0, 0, 0) rotate(14deg);
        opacity: 0;
    }
    12% {
        opacity: 0.64;
    }
    100% {
        transform: translate3d(-34px, 280px, 0) rotate(14deg);
        opacity: 0;
    }
}

@keyframes weatherSnow {
    0% {
        transform: translate3d(0, 0, 0);
        opacity: 0;
    }
    12% {
        opacity: 0.9;
    }
    50% {
        transform: translate3d(14px, 132px, 0);
    }
    100% {
        transform: translate3d(-10px, 278px, 0);
        opacity: 0;
    }
}

@keyframes weatherSleet {
    0% {
        transform: translate3d(0, 0, 0) rotate(10deg);
        opacity: 0;
    }
    15% {
        opacity: 0.74;
    }
    100% {
        transform: translate3d(-18px, 284px, 0) rotate(10deg);
        opacity: 0;
    }
}

@keyframes weatherDust {
    0% {
        transform: translate3d(-16px, 6px, 0);
        opacity: 0;
    }
    16% {
        opacity: 0.72;
    }
    100% {
        transform: translate3d(26px, 218px, 0);
        opacity: 0;
    }
}

@keyframes weatherCloudDrift {
    0% {
        transform: translateX(-12px);
    }
    50% {
        transform: translateX(18px);
    }
    100% {
        transform: translateX(-12px);
    }
}

@keyframes weatherMist {
    0% {
        transform: translateX(-12px);
    }
    50% {
        transform: translateX(18px);
    }
    100% {
        transform: translateX(-12px);
    }
}

@keyframes weatherPulse {
    0% {
        transform: scale(0.96);
        opacity: 0.82;
    }
    50% {
        transform: scale(1.04);
        opacity: 1;
    }
    100% {
        transform: scale(0.96);
        opacity: 0.82;
    }
}

@keyframes weatherLightning {
    0%,
    13%,
    18%,
    100% {
        opacity: 0;
    }
    14%,
    16% {
        opacity: 0.95;
    }
    15%,
    17% {
        opacity: 0.3;
    }
}

.selector-group {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.searchable-select-wrapper {
    flex: 1;
    min-width: 180px;
    position: relative;
}

.searchable-select {
    position: relative;
    width: 100%;
}

.searchable-select-display {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--container-bg);
    color: var(--text-color);
    font-size: 14px;
    line-height: 1.5;
    height: 38px;
    box-sizing: border-box;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.2s;
}

.searchable-select-display:hover {
    border-color: var(--button-bg);
}

.searchable-select:focus .searchable-select-display,
.searchable-select.open .searchable-select-display {
    border-color: var(--button-bg);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.searchable-select.disabled .searchable-select-display {
    opacity: 0.6;
    cursor: not-allowed;
}

.select-arrow {
    transition: transform 0.2s;
}

.searchable-select.open .select-arrow {
    transform: rotate(180deg);
}

.searchable-select-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 4px;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 4px 12px var(--shadow-color);
    z-index: 1000;
    max-height: 300px;
    overflow: hidden;
    flex-direction: column;
    display: none;
}

.searchable-select.open .searchable-select-dropdown {
    display: flex;
}

.select-search-input {
    width: 100%;
    padding: 10px 12px;
    border: none;
    border-bottom: 1px solid var(--border-color);
    background: var(--container-bg);
    color: var(--text-color);
    font-size: 14px;
    outline: none;
    box-sizing: border-box;
}

.select-search-input::placeholder {
    color: var(--text-secondary, #999);
}

.select-options {
    overflow-y: auto;
    flex: 1;
}

.select-option {
    padding: 10px 12px;
    cursor: pointer;
    transition: background 0.15s;
}

.select-option:hover {
    background: var(--item-bg);
}

.select-option.selected {
    background: var(--button-bg);
    color: white;
}

.select-option.active {
    background: var(--button-bg);
    color: white;
}

.select-option.no-results {
    color: var(--text-secondary, #999);
    cursor: default;
}

.select-option.no-results:hover {
    background: transparent;
}

.class-select {
    flex: 2;
    min-width: 200px;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--container-bg);
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s;
}

.class-select:hover {
    border-color: var(--button-bg);
}

.class-select:focus {
    border-color: var(--button-bg);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.class-select option {
    background: var(--container-bg);
    color: var(--text-color);
    padding: 8px;
}

.class-select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.date-picker {
    flex: 1;
    min-width: 150px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--container-bg);
    color: var(--text-color);
    font-size: 14px;
    line-height: 1.5;
    height: 38px;
    box-sizing: border-box;
    cursor: pointer;
    outline: none;
}

.date-picker:hover {
    border-color: var(--button-bg);
}

.date-picker:focus {
    border-color: var(--button-bg);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

/* 深色模式下日历控件的颜色适配 */
[data-theme="dark"] .date-picker::-webkit-calendar-picker-indicator {
    filter: invert(1);
}

/* 班级标签样式 */
.class-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    background: var(--button-bg);
    color: white;
    margin-left: 8px;
}

/* ==================== AI分析弹窗样式 - 与提交模态框统一 ==================== */
#aiPlanModal .submit-modal-content {
    max-width: 600px;
    border-top: none;
    padding: 0;
    overflow: hidden;
}

#aiPlanModal .submit-modal-header {
    background: var(--item-bg);
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

#aiPlanModal .submit-modal-header h4 {
    margin: 0;
    font-size: 16px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

#aiPlanModal .submit-modal-header h4 i {
    color: var(--text-color);
    opacity: 0.7;
}

.history-search-modal-content {
    max-width: 980px;
}

.history-search-form {
    margin-bottom: 18px;
}

.history-search-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.history-search-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.history-search-field-wide {
    grid-column: 1 / -1;
}

.history-search-field label {
    font-size: 13px;
    color: var(--text-secondary);
}

.history-search-field input,
.history-search-field select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--container-bg);
    color: var(--text-color);
}

.history-search-actions {
    display: flex;
    gap: 10px;
    margin-top: 14px;
}

.history-search-secondary {
    background: var(--item-bg);
    color: var(--text-color);
}

.history-search-result {
    min-height: 180px;
}

.history-search-summary {
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 13px;
}

.history-search-empty,
.history-search-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 140px;
    color: var(--text-secondary);
    text-align: center;
}

.history-search-error {
    color: #c0392b;
}

.history-group {
    margin-bottom: 18px;
}

.history-group-title {
    margin-bottom: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-color);
}

.history-group-list {
    display: grid;
    gap: 10px;
}

.history-item {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 14px;
    background: var(--item-bg);
}

.history-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 12px;
}

.history-item-date {
    color: var(--text-secondary);
}

.history-item-subject {
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--container-bg);
    color: var(--text-color);
}

.history-item-content {
    white-space: pre-line;
    line-height: 1.6;
    color: var(--text-color);
}

.history-resource-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.history-resource-chip,
.history-resource-more {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
}

.history-resource-chip {
    border: 1px solid var(--border-color);
    background: var(--container-bg);
    color: var(--text-color);
    text-decoration: none;
}

.history-resource-chip:hover {
    border-color: var(--button-bg);
}

.history-resource-more {
    color: var(--text-secondary);
}

#aiPlanBody {
    padding: 20px;
    color: var(--text-color);
    line-height: 1.6;
}

/* AI分析加载状态 */
.ai-analysis-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 250px;
    padding: 30px;
    text-align: center;
}

.ai-analysis-loading .loading-spinner {
    width: 30px;
    height: 30px;
    border-width: 2px;
    margin: 0 auto 15px auto;
    display: block;
}

/* 作业量评价区块 */
.ai-evaluation {
    background: var(--item-bg);
    border: 1px solid var(--border-color);
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
    font-size: 14px;
}

.ai-evaluation strong {
    color: var(--text-color);
    font-weight: 600;
    margin-right: 5px;
}

/* 摘要卡片 */
.ai-summary-card {
    background: var(--item-bg);
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.ai-summary-card p {
    margin: 8px 0;
    font-size: 14px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-summary-card i {
    width: 18px;
    color: var(--text-color);
    opacity: 0.6;
}

/* 作业列表项 */
.ai-homework-item {
    margin-bottom: 18px;
    padding: 15px;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.2s;
}

.ai-homework-item:hover {
    border-left: 3px solid var(--text-color);
    transform: translateX(3px);
}

.ai-homework-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.ai-homework-subject {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-order-number {
    display: inline-block;
    width: 22px;
    height: 22px;
    background: var(--button-bg);
    color: white;
    border-radius: 3px;
    text-align: center;
    line-height: 22px;
    font-size: 12px;
    font-weight: normal;
    margin-right: 6px;
    flex-shrink: 0;
}

.ai-difficulty-badge {
    padding: 3px 10px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 500;
    background: var(--item-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

/* 难度标签 - 仅用文字区分 */
.difficulty-easy {
    border: 1px solid #27ae60;
    color: #27ae60;
}

.difficulty-medium {
    border: 1px solid #f39c12;
    color: #f39c12;
}

.difficulty-hard {
    border: 1px solid #e74c3c;
    color: #e74c3c;
}

.difficulty-illegal {
    border: 1px solid #990000;
    color: #990000;
    font-weight: bold;
}

/* 深色模式难度标签 */
[data-theme="dark"] .difficulty-easy {
    border-color: #27ae60;
    color: #27ae60;
}

[data-theme="dark"] .difficulty-medium {
    border-color: #f39c12;
    color: #f39c12;
}

[data-theme="dark"] .difficulty-hard {
    border-color: #e74c3c;
    color: #e74c3c;
}

[data-theme="dark"] .difficulty-illegal {
    border-color: #ff6b6b;
    color: #ff6b6b;
}

.ai-time-estimate {
    font-size: 13px;
    color: var(--text-color);
    margin: 8px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.8;
}

.ai-time-estimate i {
    width: 16px;
}

.ai-suggestion-box {
    font-size: 13px;
    color: var(--text-color);
    background: var(--item-bg);
    padding: 10px;
    margin-top: 8px;
    border-left: 2px solid var(--border-color);
}

.ai-suggestion-box i {
    margin-right: 5px;
    color: var(--text-color);
    opacity: 0.6;
}

/* 学习策略建议 */
.ai-study-strategies {
    margin-top: 20px;
    padding: 15px;
    background: var(--item-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.ai-study-strategies h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 12px 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-color);
}

.ai-study-strategies ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ai-study-strategies li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-color);
}

.ai-study-strategies li i {
    color: var(--text-color);
    font-size: 14px;
    margin-top: 2px;
    flex-shrink: 0;
    opacity: 0.6;
}

/* 底部说明 */
.ai-footer-note {
    margin-top: 15px;
    font-size: 12px;
    color: var(--text-color);
    opacity: 0.5;
    text-align: center;
    padding-top: 10px;
    border-top: 1px dashed var(--border-color);
}

/* 追问功能样式 */
.ai-followup-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.ai-followup-input-container {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.ai-followup-input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--container-bg);
    color: var(--text-color);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.ai-followup-input:focus {
    border-color: var(--button-bg);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.ai-followup-button {
    background: var(--button-bg);
    color: white;
    border: none;
    padding: 0 15px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
}

.ai-followup-button:hover {
    background: var(--button-hover);
}

.ai-followup-response {
    min-height: 60px;
}

.ai-followup-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
}

.ai-followup-loading .loading-spinner {
    width: 20px;
    height: 20px;
    margin: 0 auto 10px auto;
    display: block;
}

.ai-followup-success {
    background: var(--item-bg);
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: 6px;
    font-size: 14px;
    line-height: 1.5;
}

/* Markdown内容样式 */
.markdown-content {
    margin-top: 8px;
}

/* 打字机效果 */
.typewriter {
    white-space: pre-wrap;
    word-wrap: break-word;
}

.typewriter::after {
    content: '|';
    animation: blink 1s infinite;
    color: var(--text-color);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* 打字机效果完成后的光标 */
.typewriter.complete::after {
    display: none;
}

.markdown-content p {
    margin: 0 0 10px 0;
    line-height: 1.6;
}

.markdown-content p:last-child {
    margin-bottom: 0;
}

.markdown-content strong {
    font-weight: 600;
    color: var(--text-color);
}

.markdown-content em {
    font-style: italic;
}

.markdown-content ul,
.markdown-content ol {
    margin: 10px 0;
    padding-left: 20px;
}

.markdown-content li {
    margin: 5px 0;
}

.markdown-content code {
    background: var(--item-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 13px;
    border: 1px solid var(--border-color);
}

.markdown-content pre {
    background: var(--item-bg);
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    margin: 10px 0;
}

.markdown-content pre code {
    background: none;
    border: none;
    padding: 0;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {
    margin: 15px 0 10px 0;
    font-weight: 600;
    color: var(--text-color);
}

.markdown-content h1 { font-size: 18px; }
.markdown-content h2 { font-size: 16px; }
.markdown-content h3 { font-size: 15px; }
.markdown-content h4 { font-size: 14px; }

.markdown-content blockquote {
    border-left: 3px solid var(--border-color);
    margin: 10px 0;
    padding-left: 15px;
    color: #666;
}

[data-theme="dark"] .markdown-content blockquote {
    color: #aaa;
}

.ai-followup-error {
    background: var(--error-bg);
    border: 1px solid #d32f2f;
    padding: 15px;
    border-radius: 6px;
    font-size: 14px;
    color: #d32f2f;
    line-height: 1.5;
}

/* 空状态和错误状态 */
.ai-analysis-empty,
.ai-analysis-error {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-color);
}

.ai-analysis-empty i,
.ai-analysis-error i {
    font-size: 48px;
    margin-bottom: 15px;
    opacity: 0.3;
}

.ai-analysis-error button {
    margin-top: 20px;
    padding: 8px 20px;
    background: var(--button-bg);
    color: white;
    border: none;
    border-radius: 3px;
    font-size: 13px;
    cursor: pointer;
    transition: background 0.2s;
}

.ai-analysis-error button:hover {
    background: var(--button-hover);
}

/* AI分析内容滚动条 */
.ai-analysis-content {
    max-height: 500px;
    overflow-y: auto;
    padding: 5px;
}

.ai-analysis-content::-webkit-scrollbar {
    width: 6px;
}

.ai-analysis-content::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: 3px;
}

.ai-analysis-content::-webkit-scrollbar-thumb {
    background: var(--button-bg);
    border-radius: 3px;
}

.ai-analysis-content::-webkit-scrollbar-thumb:hover {
    background: var(--button-hover);
}

/* ==================== 移动端优化 ==================== */
@media (max-width: 768px) {
    body {
        padding: 10px;
        padding-bottom: 70px;
    }

    .container {
        padding: 15px;
        margin-top: 50px;
    }

    .header-with-button {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-buttons {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        margin-top: 10px;
    }

    .action-button {
        width: 100%;
        margin: 0 !important;
        padding: 10px 8px;
        font-size: 13px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        border-radius: 4px;
    }

    .action-button i {
        font-size: 14px;
    }

    /* 班级选择器 */
    .selector-group {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .weather-panel {
        padding: 14px;
    }

    .weather-planner-card {
        padding: 14px;
    }

    .weather-planner-form-grid {
        grid-template-columns: 1fr;
    }

    .weather-planner-day {
        min-height: 0;
        padding: 4px 3px;
        gap: 2px;
        overflow: hidden;
    }

    .weather-planner-weekdays,
    .weather-planner-calendar {
        gap: 4px;
    }

    .weather-planner-day-top {
        justify-content: space-between;
        gap: 2px;
    }

    .weather-planner-day-bottom {
        display: flex;
        justify-content: center;
    }

    .weather-planner-day-number {
        font-size: 14px;
    }

    .weather-planner-day-tag,
    .weather-planner-day-todo,
    .weather-planner-day-week {
        font-size: 9px;
        line-height: 1.2;
    }

    .weather-planner-day-week {
        display: inline;
    }

    .weather-planner-day-tag {
        min-height: 0;
        text-align: center;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        word-break: normal;
    }

    .weather-planner-day-todo-text-full {
        display: none;
    }

    .weather-planner-day-todo-text-short {
        display: inline;
    }

    .weather-planner-todo-item {
        flex-direction: column;
    }

    .weather-planner-todo-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .weather-planner-form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .weather-panel-temp {
        font-size: 28px;
    }

    .weather-panel-icon {
        width: 60px;
        height: 60px;
    }

    .weather-forecast-list {
        grid-template-columns: 1fr;
    }

    .class-select,
    .date-picker {
        width: 100%;
        min-width: unset;
        padding: 12px;
        font-size: 16px;
    }

    #refreshBtn {
        width: 100%;
        padding: 12px !important;
        font-size: 14px;
    }

    /* 作业列表 */
    .homework-list {
        flex-direction: column;
        gap: 12px;
        margin: 0;
    }

    .homework-item {
        width: 100%;
        min-width: unset;
        flex: none;
        padding: 14px;
        padding-bottom: 40px;
    }

    .hw-submit-btn {
        opacity: 1;
        bottom: 11px;
        right: 10px;
        padding: 6px 12px;
        font-size: 12px;
        border-radius: 20px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    }

    /* AI模态框优化 */
    #aiPlanModal .submit-modal-content {
        width: 95%;
        margin: 10px;
        max-height: 90vh;
    }

    .ai-analysis-content {
        max-height: 70vh;
        padding: 5px;
    }

    .ai-summary-card {
        padding: 15px;
    }

    .ai-summary-card h3 {
        font-size: 16px;
    }

    .ai-summary-card p {
        font-size: 13px;
    }

    .ai-homework-item {
        padding: 12px;
        margin-bottom: 10px;
    }

    .ai-homework-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .ai-homework-subject {
        font-size: 15px;
        width: 100%;
    }

    .ai-difficulty-badge {
        align-self: flex-start;
        margin-left: 30px;
    }

    .ai-time-estimate {
        font-size: 12px;
        margin: 6px 0 6px 30px;
    }

    .ai-suggestion-box {
        font-size: 12px;
        padding: 8px;
        margin-left: 30px;
    }

    .ai-order-number {
        width: 24px;
        height: 24px;
        line-height: 24px;
        font-size: 12px;
    }

    .ai-footer-note {
        font-size: 11px;
        padding: 10px;
    }

    .ai-study-strategies {
        padding: 12px;
        margin-top: 15px;
    }

    .ai-study-strategies h4 {
        font-size: 14px;
    }

    .ai-study-strategies li {
        font-size: 12px;
    }

    /* 提交模态框 */
    .submit-modal-content {
        width: 95%;
        margin: 10px;
    }

    #weatherModal .weather-modal-content {
        width: calc(100vw - 20px);
        max-width: none;
    }

    .student-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .student-item > div:last-child {
        width: 100%;
        display: flex;
        justify-content: flex-end;
    }

    .score-input {
        width: 80px;
        padding: 8px;
    }

    /* 全屏模式 */
    .fullscreen-mode {
        padding: 100px 15px 15px 15px;
    }

    .fullscreen-mode .homework-item {
        margin: 10px 0;
        padding: 15px;
        font-size: 16px;
    }

    .fullscreen-mode .homework-content {
        font-size: 18px;
        line-height: 1.5;
        padding: 10px;
    }

    .fullscreen-close {
        top: auto;
        bottom: 20px;
        right: 15px;
        padding: 10px 20px;
        font-size: 16px;
    }

    .fullscreen-controls {
        top: 15px;
        padding: 8px 12px;
        gap: 8px;
        flex-wrap: wrap;
        justify-content: center;
        max-width: 90%;
    }

    .fullscreen-controls .control-label {
        font-size: 12px;
        width: 100%;
        text-align: center;
    }

    .fullscreen-controls .control-slider {
        width: 100px;
    }

    .fullscreen-controls .control-btn {
        padding: 6px 10px;
        font-size: 12px;
    }

    .fullscreen-controls .control-value {
        font-size: 12px;
        min-width: 40px;
    }

    /* 主题切换按钮 */
    .theme-toggle {
        bottom: 80px;
        right: 15px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }

    /* 操作反馈 */
    .operation-feedback {
        bottom: 30px;
        padding: 10px 20px;
        font-size: 13px;
        max-width: 90%;
        text-align: center;
    }

    .planner-reminder-overlay {
        padding: 12px;
    }

    .planner-reminder-dialog {
        width: 100%;
        min-height: 100%;
        max-height: 100%;
        border-radius: 12px;
    }

    .planner-reminder-header {
        padding: 14px 16px;
    }

    .planner-reminder-title {
        font-size: 26px;
    }

    .planner-reminder-time {
        font-size: 15px;
    }

    .planner-reminder-note {
        font-size: 18px;
    }

    .planner-reminder-body {
        padding: 16px;
    }

    .planner-reminder-panel {
        padding: 14px;
    }

    .planner-reminder-note-block {
        margin-top: 14px;
        padding-top: 14px;
    }

    .planner-reminder-footer {
        align-items: stretch;
        flex-direction: column;
    }

    .planner-reminder-actions {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .planner-reminder-primary,
    .planner-reminder-secondary {
        width: 100%;
    }

    /* 公告栏 */
    .announcement-banner {
        padding: 12px;
        margin: 10px 0;
    }

    .announcement-item {
        font-size: 13px;
        padding: 10px;
    }

    .announcement-title {
        font-size: 15px;
    }

    .resource-preview-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .resource-preview-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .resource-preview-modal {
        padding: 12px;
    }

    .resource-preview-modal-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .resource-preview-modal-actions {
        width: 100%;
        justify-content: space-between;
    }

    .close-announcement {
        top: 5px;
        right: 8px;
        font-size: 20px;
    }

    /* SSO状态栏 */
    .sso-bar {
        height: 50px;
        padding: 0 12px;
    }

    .sso-bar .user {
        font-size: 12px;
        max-width: 60%;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .sso-bar button {
        padding: 5px 10px;
        font-size: 11px;
    }
}

/* 超小屏幕优化 (iPhone 5/SE) */
@media (max-width: 375px) {
    .action-button {
        font-size: 12px;
        padding: 8px 4px;
    }

    .action-button i {
        font-size: 12px;
    }

    .homework-item {
        padding: 12px;
        padding-bottom: 38px;
    }

    .weather-planner-weekdays,
    .weather-planner-calendar {
        gap: 4px;
    }

    .weather-planner-day {
        min-height: 0;
        padding: 3px 2px;
        gap: 1px;
    }

    .weather-planner-day-number {
        font-size: 12px;
    }

    .weather-planner-day-tag,
    .weather-planner-day-todo,
    .weather-planner-day-week {
        font-size: 8px;
        line-height: 1.1;
    }

    .weather-planner-day-tag {
        text-align: left;
    }

    .weather-planner-day-week {
        font-size: 7px;
    }

    .homework-resource-link span {
        max-width: 180px;
    }

    .resource-preview-modal-pdf {
        height: 65vh;
    }

    .hw-submit-btn {
        padding: 6px 10px;
        font-size: 11px;
    }

    .ai-homework-subject {
        font-size: 14px;
    }

    .ai-difficulty-badge {
        font-size: 11px;
        padding: 2px 8px;
    }
}

/* 横屏模式优化 */
@media (max-height: 600px) and (orientation: landscape) {
    #aiPlanModal .submit-modal-content {
        max-height: 95vh;
    }

    .ai-analysis-content {
        max-height: 80vh;
    }

    .ai-homework-item {
        padding: 10px;
        margin-bottom: 8px;
    }
}