/* ========================================
   AI 治愈手账日记 - 治愈系主题
   ======================================== */

/* CSS 变量 - 治愈色系 */
:root {
    /* 默认治愈奶油色 */
    --primary: #f4a4a4;
    --primary-light: #ffd6d6;
    --secondary: #ffe5b4;
    --accent: #a8d8ea;
    --pink: #ffc8dd;
    --mint: #b5ead7;
    --lavender: #c7ceea;
    --peach: #ffdede;
    --cream: #fff8f0;
    --bg-main: #fff9f5;
    --bg-card: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --text-primary: #5a5a5a;
    --text-secondary: #8e8e8e;
    --shadow: 0 8px 32px rgba(244, 164, 164, 0.15);
    --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.05);
    --radius: 20px;
    --radius-lg: 28px;
    --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "苹果雅黑", sans-serif;
    --font-hand: "Ma Shan Zheng", cursive; /* 手写风格 */
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 粉嫩樱花主题 */
[data-theme="sakura"] {
    --primary: #f4a4a4;
    --primary-light: #ffd6d6;
    --secondary: #ffe5b4;
    --accent: #a8d8ea;
    --pink: #ffc8dd;
    --mint: #b5ead7;
    --lavender: #c7ceea;
    --bg-main: #fff9f5;
}

/* 薄荷清新主题 */
[data-theme="mint"] {
    --primary: #7ec8b8;
    --primary-light: #c8f0e8;
    --secondary: #a8e6cf;
    --accent: #88d8b0;
    --pink: #ffb7c5;
    --mint: #b5ead7;
    --lavender: #d4e5ff;
    --bg-main: #f0faf7;
}

/* 薰衣草梦幻主题 */
[data-theme="lavender"] {
    --primary: #b8a9c9;
    --primary-light: #e8dff5;
    --secondary: #d4c4fb;
    --accent: #a8b4e3;
    --pink: #e0b0ff;
    --mint: #c8f0e8;
    --lavender: #dcd0ff;
    --bg-main: #f8f5ff;
}

/* 奶油黄温暖主题 */
[data-theme="cream"] {
    --primary: #e8b86d;
    --primary-light: #fff0c8;
    --secondary: #ffd670;
    --accent: #ffe5a0;
    --pink: #ffb3ba;
    --mint: #b5ead7;
    --lavender: #c7ceea;
    --bg-main: #fffbf0;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* 背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, var(--pink) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, var(--accent) 0%, transparent 20%),
        radial-gradient(circle at 50% 50%, var(--lavender) 0%, transparent 30%);
    opacity: 0.3;
    z-index: -1;
    animation: bgFloat 20s ease-in-out infinite;
}

@keyframes bgFloat {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

/* ========================================
   整体布局
   ======================================== */
.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* ========================================
   侧边栏 - 毛玻璃效果
   ======================================== */
.sidebar {
    width: 260px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 28px 20px;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    border-right: 1px solid rgba(255, 255, 255, 0.5);
    z-index: 100;
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

.logo {
    font-size: 22px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 36px;
    padding: 16px;
    position: relative;
    animation: logoPulse 3s ease-in-out infinite;
}

.logo::after {
    content: '✿';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    -webkit-text-fill-color: var(--pink);
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

@keyframes sparkle {
    0%, 100% { opacity: 1; transform: translateY(-50%) rotate(0deg); }
    50% { opacity: 0.5; transform: translateY(-50%) rotate(180deg); }
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    border: none;
    background: transparent;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 15px;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-light), transparent);
    transition: width 0.3s ease;
    border-radius: 0 var(--radius) var(--radius) 0;
}

.nav-item:hover::before {
    width: 100%;
}

.nav-item:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary), var(--pink));
    color: white;
    box-shadow: 0 4px 16px rgba(244, 164, 164, 0.4);
    animation: navBounce 0.5s ease;
}

.nav-item.active::before {
    display: none;
}

@keyframes navBounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.nav-item span {
    font-size: 18px;
    z-index: 1;
}

/* ========================================
   主内容区
   ======================================== */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 36px 40px;
    position: relative;
}

.page {
    display: none;
    animation: fadeIn 0.5s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   卡片组件 - 毛玻璃质感
   ======================================== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

/* ========================================
   按钮 - 圆润治愈
   ======================================== */
.btn {
    padding: 14px 28px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--pink));
    color: white;
    box-shadow: 0 4px 16px rgba(244, 164, 164, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 24px rgba(244, 164, 164, 0.4);
}

.btn-secondary {
    background: var(--bg-main);
    color: var(--text-primary);
    border: 2px solid var(--primary-light);
}

.btn-secondary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

.btn-nav {
    padding: 10px 18px;
    border: none;
    background: var(--bg-main);
    border-radius: 50px;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
}

.btn-nav:hover {
    background: var(--primary-light);
    transform: scale(1.05);
}

/* ========================================
   日历组件
   ======================================== */
.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.calendar-header h2 {
    background: linear-gradient(135deg, var(--primary), var(--lavender));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 24px;
}

.calendar-nav {
    display: flex;
    gap: 12px;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    padding: 16px 0;
    background: linear-gradient(135deg, var(--primary-light), var(--lavender));
    border-radius: var(--radius) var(--radius) 0 0;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: var(--shadow-soft);
}

.calendar-grid .day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    font-size: 15px;
    position: relative;
}

.calendar-grid .day:hover {
    background: var(--primary-light);
    transform: scale(1.1);
}

.calendar-grid .day.today {
    background: linear-gradient(135deg, var(--primary), var(--pink));
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(244, 164, 164, 0.4);
    animation: todayPulse 2s ease-in-out infinite;
}

@keyframes todayPulse {
    0%, 100% { box-shadow: 0 4px 12px rgba(244, 164, 164, 0.4); }
    50% { box-shadow: 0 4px 20px rgba(244, 164, 164, 0.6); }
}

.calendar-grid .day.empty {
    cursor: default;
}

.calendar-grid .day.has-diary::after {
    content: '✿';
    position: absolute;
    bottom: 2px;
    font-size: 8px;
    color: var(--pink);
}

.day-mood {
    font-size: 10px;
    margin-top: 2px;
}

/* ========================================
   编辑器样式 - 手账质感
   ======================================== */
.editor-container {
    max-width: 1000px;
    margin: 0 auto;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.date-display {
    display: flex;
    align-items: baseline;
    gap: 14px;
}

.date-display .date {
    font-size: 28px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--lavender));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-hand);
}

.date-display .weekday {
    color: var(--text-secondary);
    font-size: 16px;
}

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

.weather-btn, .mood-btn {
    padding: 10px 18px;
    border: 2px solid transparent;
    background: var(--bg-main);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 16px;
}

.weather-btn:hover, .mood-btn:hover {
    transform: scale(1.08);
    background: var(--primary-light);
}

.weather-btn.active, .mood-btn.active {
    border-color: var(--primary);
    background: linear-gradient(135deg, var(--primary-light), var(--lavender));
    box-shadow: 0 2px 8px rgba(244, 164, 164, 0.3);
}

.editor-main {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.diary-paper {
    flex: 1;
    min-width: 320px;
    min-height: 450px;
    padding: 36px;
    border-radius: var(--radius-lg);
    position: relative;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 3px solid rgba(255, 255, 255, 0.8);
}

/* 信纸背景效果 */
.diary-paper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            transparent,
            transparent 31px,
            rgba(200, 180, 180, 0.2) 31px,
            rgba(200, 180, 180, 0.2) 32px
        );
    pointer-events: none;
    border-radius: var(--radius-lg);
}

.diary-paper textarea {
    width: 100%;
    height: 380px;
    border: none;
    background: transparent;
    font-size: 17px;
    line-height: 32px;
    resize: none;
    outline: none;
    font-family: var(--font-hand);
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.diary-paper textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* 信纸渐变主题 */
.diary-paper.gradient-1 { 
    background: linear-gradient(135deg, #fff5f5, #ffe5e5, #fff0f0); 
}
.diary-paper.gradient-2 { 
    background: linear-gradient(135deg, #f0fff4, #e6fffa, #f0fff8); 
}
.diary-paper.gradient-3 { 
    background: linear-gradient(135deg, #ebf8ff, #e6f7ff, #f0f8ff); 
}
.diary-paper.gradient-4 { 
    background: linear-gradient(135deg, #faf5ff, #f5f0ff, #faf5ff); 
}
.diary-paper.gradient-5 { 
    background: linear-gradient(135deg, #fff8e1, #fff3e0, #fffbf0); 
}
.diary-paper.gradient-6 { 
    background: linear-gradient(135deg, #fce4ec, #f8bbd9, #fce4ec); 
}

/* 贴纸动画 */
.sticker {
    position: absolute;
    font-size: 32px;
    cursor: move;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
    transition: transform 0.3s ease;
    z-index: 2;
}

.sticker:hover {
    transform: scale(1.2) rotate(10deg);
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(-3deg); }
    50% { transform: translateY(-8px) rotate(3deg); }
}

/* 装饰面板 */
.decorator-panel {
    width: 220px;
    padding: 24px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.decorator-panel h4 {
    margin: 20px 0 14px;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.decorator-panel h4::before {
    content: '♡';
    color: var(--pink);
}

.bg-options, .sticker-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.bg-options button {
    height: 50px;
    border: 2px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.bg-options button:hover {
    transform: scale(1.05);
    border-color: var(--primary);
}

.bg-options button.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.sticker-options button {
    font-size: 26px;
    padding: 10px;
    border: none;
    background: var(--bg-main);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.sticker-options button:hover {
    background: var(--primary-light);
    transform: scale(1.1);
}

.editor-footer {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* ========================================
   AI 弹窗 - 梦幻效果
   ======================================== */
.ai-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.ai-content {
    background: var(--bg-card);
    padding: 36px;
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 92%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    animation: modalSlideUp 0.4s ease;
}

@keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.ai-content h3 {
    text-align: center;
    font-size: 22px;
    background: linear-gradient(135deg, var(--primary), var(--lavender));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 28px;
    font-family: var(--font-hand);
}

/* AI 结果列表 - 简洁5项风格 */
.ai-result-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 24px;
}

.ai-result-item {
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--bg-main), var(--bg-card));
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
    animation: sectionSlide 0.5s ease forwards;
    opacity: 0;
}

.ai-result-item:nth-child(1) { animation-delay: 0.05s; }
.ai-result-item:nth-child(2) { animation-delay: 0.15s; }
.ai-result-item:nth-child(3) { animation-delay: 0.25s; }
.ai-result-item:nth-child(4) { animation-delay: 0.35s; }
.ai-result-item:nth-child(5) { animation-delay: 0.45s; }

@keyframes sectionSlide {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.ai-result-item.highlight {
    background: linear-gradient(135deg, #fff5f5, #ffe5e5);
    border-left-color: var(--pink);
}

.ai-label {
    display: block;
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 5px;
    font-weight: 500;
    letter-spacing: 1px;
}

.ai-value {
    display: block;
    font-size: 16px;
    color: var(--text-primary);
    line-height: 1.7;
}

.intensity-bar-wrap {
    display: inline-block;
    width: 120px;
    height: 8px;
    background: var(--bg-main);
    border-radius: 4px;
    vertical-align: middle;
    margin-right: 10px;
    overflow: hidden;
}

.intensity-bar {
    display: block;
    height: 100%;
    border-radius: 4px;
    transition: width 0.8s ease;
}

.intensity-num {
    font-weight: 600;
    color: var(--text-primary);
    vertical-align: middle;
}

.intensity-desc {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.ai-close-btn {
    width: 100%;
    margin-top: 4px;
}

/* ========================================
   日记列表
   ======================================== */
.diary-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 24px;
}

.diary-item {
    cursor: pointer;
    transition: var(--transition);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.diary-item:hover {
    transform: translateX(8px);
}

.diary-meta {
    display: flex;
    gap: 14px;
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-size: 14px;
}

.diary-preview {
    color: var(--text-primary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 80px 40px;
    animation: emptyFloat 3s ease-in-out infinite;
}

@keyframes emptyFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.empty-state h3 {
    font-size: 24px;
    background: linear-gradient(135deg, var(--primary), var(--lavender));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 14px;
    font-family: var(--font-hand);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 16px;
}

.empty-state .empty-icon {
    font-size: 80px;
    margin-bottom: 20px;
    display: block;
    animation: heartBeat 1.5s ease-in-out infinite;
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.1); }
    50% { transform: scale(1); }
    75% { transform: scale(1.1); }
}

/* ========================================
   设置页面 - 主题选择
   ======================================== */
.theme-selector {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.theme-option {
    width: 80px;
    height: 100px;
    border-radius: var(--radius);
    cursor: pointer;
    border: 3px solid transparent;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 12px;
}

.theme-option:hover {
    transform: scale(1.05);
}

.theme-option.active {
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(244, 164, 164, 0.3);
}

.theme-option[data-theme="sakura"] { background: linear-gradient(135deg, #ffd6d6, #ffc8dd); }
.theme-option[data-theme="mint"] { background: linear-gradient(135deg, #c8f0e8, #a8d8ea); }
.theme-option[data-theme="lavender"] { background: linear-gradient(135deg, #e8dff5, #c7ceea); }
.theme-option[data-theme="cream"] { background: linear-gradient(135deg, #fff0c8, #ffd670); }

.setting-item {
    padding: 24px 0;
    border-bottom: 1px solid var(--bg-main);
}

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

.setting-item h4 {
    margin-bottom: 14px;
    color: var(--text-primary);
    font-size: 16px;
}

/* ========================================
   心情追踪 - 治愈图表
   ======================================== */
.mood-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin: 28px 0;
}

.mood-stat {
    text-align: center;
    padding: 28px 20px;
    background: linear-gradient(135deg, var(--bg-card), var(--bg-main));
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.mood-stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.stat-num {
    display: block;
    font-size: 42px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary), var(--pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-hand);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 8px;
}

.mood-chart {
    margin-top: 28px;
}

.mood-chart h3 {
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--text-primary);
}

.mood-bars {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.mood-bar-item {
    display: flex;
    align-items: center;
    gap: 14px;
}

.mood-label {
    width: 70px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.bar-track {
    flex: 1;
    height: 28px;
    background: var(--bg-main);
    border-radius: 14px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--pink), var(--lavender));
    border-radius: 14px;
    transition: width 1s ease;
    position: relative;
    overflow: hidden;
}

.bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
}

.mood-count {
    width: 40px;
    text-align: right;
    color: var(--text-secondary);
    font-weight: 500;
}

.mood-quote {
    margin-top: 36px;
    padding: 32px;
    background: linear-gradient(135deg, var(--primary), var(--lavender));
    border-radius: var(--radius-lg);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.mood-quote::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: 20px;
    font-size: 120px;
    opacity: 0.1;
    font-family: serif;
}

.mood-quote p {
    font-size: 18px;
    line-height: 1.8;
    font-family: var(--font-hand);
    position: relative;
    z-index: 1;
}

/* ========================================
   Loading 动画
   ======================================== */
.loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-card);
    padding: 28px 48px;
    border-radius: var(--radius-lg);
    z-index: 1001;
    text-align: center;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.loading .spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--bg-main);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========================================
   滚动条美化
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--primary-light), var(--lavender));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 900px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: sticky;
        top: 0;
        display: flex;
        align-items: center;
        padding: 12px 16px;
        background: var(--bg-glass);
        backdrop-filter: blur(20px);
        z-index: 200;
        flex-shrink: 0;
    }
    
    .logo {
        margin-bottom: 0;
        margin-right: 16px;
        white-space: nowrap;
        font-size: 18px;
        padding: 8px;
    }
    
    .logo::after {
        display: none;
    }
    
    .nav-menu {
        flex-direction: row;
        overflow-x: auto;
        gap: 6px;
        flex: 1;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu::-webkit-scrollbar {
        display: none;
    }
    
    .nav-item {
        white-space: nowrap;
        padding: 10px 14px;
        font-size: 14px;
        flex-shrink: 0;
    }
    
    .main-content {
        margin-left: 0;
        padding: 20px 16px;
        min-height: auto;
    }
    
    .editor-main {
        flex-direction: column;
    }
    
    .decorator-panel {
        width: 100%;
    }
    
    .mood-summary {
        grid-template-columns: repeat(2, 1fr);
    }

    .calendar-header h2 {
        font-size: 18px;
    }

    .calendar-grid {
        gap: 4px;
    }

    .day {
        padding: 6px 2px;
        font-size: 13px;
    }
}

@media (max-width: 500px) {
    .sidebar {
        padding: 10px 12px;
    }

    .logo {
        font-size: 16px;
        margin-right: 8px;
    }

    .nav-item {
        padding: 8px 10px;
        font-size: 13px;
        gap: 6px;
    }

    .nav-item span {
        font-size: 16px;
    }
    
    .mood-summary {
        grid-template-columns: 1fr;
    }
    
    .theme-selector {
        justify-content: center;
    }
    
    .editor-footer {
        flex-direction: column;
    }

    .editor-footer .btn {
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .mood-selector {
        flex-wrap: wrap;
        gap: 6px;
    }

    .mood-btn {
        font-size: 13px;
        padding: 8px 12px;
    }

    .diary-paper textarea {
        font-size: 15px;
        padding: 20px;
    }
}

/* ========================================
   额外动画类
   ======================================== */
.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.slide-up {
    animation: slideUp 0.5s ease forwards;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.bounce {
    animation: bounce 0.6s ease;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Toast 动画 */
@keyframes toastIn {
    from { opacity: 0; transform: translateY(20px) scale(0.9); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateY(0) scale(1); }
    to { opacity: 0; transform: translateY(-10px) scale(0.95); }
}