/* 导入Google Fonts中文字体 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap');

:root {
    --primary-color: #6B8FF8;
    --background-color: #F5F6FA;
    --card-background: #FFFFFF;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-radius: 16px;
    
    /* 字体系统 */
    --font-primary: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-md: 15px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-xxl: 20px;
    --font-size-jumbo: 32px;
    
    /* 字重系统 */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* 行高系统 */
    --line-height-tight: 1.3;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.7;
    
    /* 字间距 */
    --letter-spacing-tight: -0.01em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.02em;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    background-color: var(--background-color);
    color: var(--text-primary);
    padding-bottom: 60px;
    opacity: 1;
    transition: opacity 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Status Bar */
.status-bar {
    display: flex;
    justify-content: space-between;
    padding: 5px 15px;
    background-color: var(--background-color);
    font-size: var(--font-size-sm);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--background-color);
}

.page-header h1 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-tight);
}

.settings-icon {
    width: 24px;
    height: 24px;
}

/* User Info Section */
.user-info {
    padding: 20px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.user-details h2 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-tight);
    margin-bottom: 2px;
}

.date {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Mood Score Card */
.mood-score {
    padding: 0 20px;
}

.score-card {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: stretch;
    background: linear-gradient(90deg, #dbeafe 0%, #f0e7ff 100%);
    border-radius: 20px;
    padding: 20px 24px 20px 20px;
    margin-bottom: 20px;
    min-height: 140px;
    box-shadow: 0 2px 10px rgba(107, 143, 248, 0.05);
    position: relative;
}

.score-left {
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.score-title {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin: 8px 0 4px 0;
}

.score-label {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: #222;
}

.score-num {
    font-size: var(--font-size-jumbo);
    font-weight: var(--font-weight-bold);
    color: #ff9900;
    margin-left: 4px;
    letter-spacing: var(--letter-spacing-tight);
}

.score-unit {
    font-size: var(--font-size-lg);
    color: #ff9900;
    font-weight: var(--font-weight-semibold);
}

.score-desc {
    font-size: var(--font-size-sm);
    color: #666;
    margin-bottom: 10px;
    line-height: var(--line-height-relaxed);
}

.mood-button {
    background: linear-gradient(90deg, #ffb86c 0%, #ff7e5f 100%);
    color: #fff;
    border: none;
    border-radius: 16px;
    padding: 6px 18px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 2px 8px rgba(255, 184, 108, 0.08);
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    letter-spacing: var(--letter-spacing-wide);
}

.mood-button:active {
    transform: scale(0.96);
}

.score-cat {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 90px;
    max-width: 110px;
}

.cat-img {
    width: 90px;
    height: 110px;
    object-fit: contain;
    border-radius: 18px;
    background: rgba(255,255,255,0.5);
    box-shadow: 0 2px 8px rgba(107, 143, 248, 0.04);
    display: block;
    margin: 0 auto;
}

/* Mood Diary */
.mood-diary {
    padding: 20px;
}

.emoji-list {
    display: flex;
    gap: 15px;
    overflow-x: auto;
    padding: 10px 0;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scrollbar-width: none;
    position: relative;
}

.emoji-item img {
    width: 40px;
    height: 40px;
}

.emoji-item {
    cursor: pointer;
    transition: transform 0.2s ease;
    position: relative;
}

.emoji-item:hover {
    transform: translateY(-2px);
}

.emoji-item.selected::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

/* AI Section */
.ai-section {
    padding: 0 20px;
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.ai-title {
    font-size: 16px;
    font-weight: 700;
    margin: 0 0 12px 2px;
    color: #222;
}

.ai-cards {
    display: flex;
    gap: 16px;
}

.ai-card {
    position: relative;
    flex: 1 1 0;
    border-radius: 18px;
    padding: 18px 16px 16px 16px;
    min-width: 0;
    box-shadow: 0 2px 8px rgba(107, 143, 248, 0.04);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    cursor: pointer;
    transition: box-shadow 0.2s, transform 0.2s;
}

.ai-card-blue {
    background: linear-gradient(120deg, #dbeafe 60%, #b6e0fe 100%);
}

.ai-card-yellow {
    background: linear-gradient(120deg, #fff3c6 60%, #ffe0b2 100%);
}

.ai-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: #222;
    margin-bottom: 4px;
    letter-spacing: var(--letter-spacing-tight);
}

.ai-card-desc {
    font-size: var(--font-size-sm);
    color: #333333;
    letter-spacing: var(--letter-spacing-normal);
    font-weight: var(--font-weight-medium);
    opacity: 0.85;
}

.ai-card-blue .ai-card-desc {
    color: #1a4b8c;
}

.ai-card-yellow .ai-card-desc {
    color: #8b6d27;
}

.ai-arrow {
    font-size: 20px;
    color: #bbb;
    position: absolute;
    right: 16px;
    bottom: 12px;
    font-weight: bold;
}

.ai-cat {
    position: absolute;
    right: 10px;
    top: -18px;
    width: 36px;
    height: 36px;
    z-index: 2;
}

.ai-cat img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
}

/* Mood Chart */
.mood-chart {
    padding: 0 20px;
    margin: 20px 0;
}

.mood-chart h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #222;
}

.chart-container {
    position: relative;
    height: 220px;
    background-color: #FFF0F5;
    border-radius: 20px;
    padding: 15px;
    box-shadow: 0 4px 15px rgba(255, 107, 149, 0.1);
    transition: transform 0.3s ease;
    margin-bottom: 15px;
}

.chart-container canvas {
    max-width: 100%;
}

.chart-container:hover {
    transform: scale(1.01);
}

/* 情绪等级标签 */
.emotion-levels {
    position: absolute;
    left: 15px;
    top: 50px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    z-index: 10;
}

.emotion-level {
    font-size: 12px;
    color: #888;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: var(--card-background);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-secondary);
    position: relative;
    transition: transform 0.2s ease;
    padding: 8px 0;
    height: 100%;
}

.nav-item img {
    width: 24px;
    height: 24px;
    margin-bottom: 4px;
    position: relative;
}

/* 图标状态控制 */
.nav-item .active-icon {
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.nav-item .inactive-icon {
    opacity: 1;
    visibility: visible;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.nav-item.active .active-icon {
    opacity: 1;
    visibility: visible;
}

.nav-item.active .inactive-icon {
    opacity: 0;
    visibility: hidden;
}

.nav-item span {
    font-size: var(--font-size-xs);
    margin-top: 2px;
    letter-spacing: var(--letter-spacing-normal);
}

.nav-item.active {
    color: var(--primary-color);
}

.nav-item:hover {
    transform: translateY(-2px);
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

/* Hide scrollbar but keep functionality */
::-webkit-scrollbar {
    display: none;
}

/* Tips Section */
.tips {
    padding: 20px;
}

.tips h3 {
    margin-bottom: 15px;
}

/* Animations */
@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

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

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