/* ============================================
   八字对话分析平台 — 全局样式
   设计风格：中式典雅 · 暖金色调 · 干净现代
   ============================================ */

/* ---- 设计 Token ---- */
:root {
    --color-bg: #f0f2f5;
    --color-surface: #ffffff;
    --color-card: #f7f8fa;
    --color-primary: #8b5cf6;
    --color-primary-light: #f3e8ff;
    --color-primary-dark: #7c3aed;
    --color-primary-gradient: linear-gradient(135deg, #8b5cf6, #a78bfa);
    --color-accent: #10b981;
    --color-accent-light: #d1fae5;
    --color-warm: #f59e0b;
    --color-warm-light: #fef3c7;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-dim: #94a3b8;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-error: #ef4444;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", "Songti SC", Georgia, serif;
    --font-family-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 20px;
    --font-size-xl: 28px;
    --font-size-2xl: 36px;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --max-width: 1200px;
    --header-height: 64px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- 暗色主题 ---- */
[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-card: #334155;
    --color-primary: #a78bfa;
    --color-primary-light: #2e1065;
    --color-primary-dark: #8b5cf6;
    --color-primary-gradient: linear-gradient(135deg, #a78bfa, #c4b5fd);
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-dim: #64748b;
    --color-border: #334155;
    --color-border-light: #1e293b;
    --shadow: 0 1px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

::selection { background: var(--color-primary-light); color: var(--color-text); }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-dim); }

/* ---- Header / Navigation ---- */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    height: var(--header-height);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.92);
}
[data-theme="dark"] .header {
    background: rgba(34, 34, 64, 0.92);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 28px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 32px;
}

.logo {
    font-family: var(--font-family);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary) !important;
    text-decoration: none !important;
    letter-spacing: 2px;
    position: relative;
}
.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), transparent);
    border-radius: 1px;
}

.nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    text-decoration: none !important;
}
.nav a:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    cursor: pointer;
    font-size: 16px;
    transition: all var(--transition);
    line-height: 1;
    margin-left: 8px;
}
.theme-toggle:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

/* ---- Main Content ---- */
.main {
    min-height: calc(100vh - var(--header-height) - 180px);
}
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 40px 28px;
}

/* ---- Hero Section ---- */
.hero {
    text-align: center;
    padding: 60px 0 40px;
    position: relative;
}
.hero::before {
    content: '☰';
    font-size: 64px;
    color: var(--color-primary-light);
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.3;
}
.hero h1 {
    font-family: var(--font-family);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    letter-spacing: 4px;
}
.hero-desc {
    color: var(--color-text-secondary);
    max-width: 560px;
    margin: 0 auto;
    font-size: var(--font-size-base);
    line-height: 1.8;
}

/* ---- Form Section ---- */
.form-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    padding: 36px;
    margin-bottom: 28px;
    box-shadow: var(--shadow);
}
.form-section h2 {
    font-family: var(--font-family);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--color-text);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary-light);
    letter-spacing: 1px;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.form-group {
    flex: 1;
    min-width: 140px;
}
.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}
.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    background: var(--color-bg);
    color: var(--color-text);
    transition: all var(--transition);
    font-family: var(--font-family-sans);
    appearance: none;
    -webkit-appearance: none;
}
.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23999' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}
.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}
.form-group input::placeholder {
    color: var(--color-text-dim);
}

/* ---- Hour Selector ---- */
.hour-selector {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}
.hour-btn {
    padding: 8px 4px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    cursor: pointer;
    font-size: var(--font-size-xs);
    text-align: center;
    transition: all var(--transition);
    line-height: 1.4;
    font-family: var(--font-family-sans);
    color: var(--color-text);
}
.hour-btn small {
    font-size: 10px;
    color: var(--color-text-dim);
    display: block;
}
.hour-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    transform: translateY(-1px);
}
.hour-btn.active {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(184, 134, 11, 0.3);
}
.hour-btn.active small { color: rgba(255,255,255,0.8); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family-sans);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none !important;
    gap: 8px;
}
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    box-shadow: 0 2px 8px rgba(184, 134, 11, 0.3);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(184, 134, 11, 0.4);
    color: #fff;
}
.btn-primary:active {
    transform: translateY(0);
}
.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.btn-lg {
    padding: 14px 36px;
    font-size: var(--font-size-lg);
    width: 100%;
    margin-top: 20px;
    letter-spacing: 2px;
}

/* ---- Bazi Result Cards ---- */
.result-section {
    margin-top: 28px;
    animation: fadeInUp 0.4s ease;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.result-section h2 {
    font-family: var(--font-family);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary-light);
    letter-spacing: 1px;
}
.bazi-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.bazi-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}
.bazi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.pillar-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-dim);
    margin-bottom: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.gan {
    font-size: 32px;
    font-weight: 700;
    color: #7c3aed;
    line-height: 1.2;
}
.zhi {
    font-size: 32px;
    font-weight: 700;
    color: #2563eb;
    line-height: 1.2;
}
.nayin {
    font-size: var(--font-size-xs);
    color: var(--color-text-dim);
    margin-top: 8px;
    letter-spacing: 1px;
}
.bazi-summary {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    padding: 20px 24px;
    line-height: 2.2;
    box-shadow: var(--shadow);
}
.bazi-summary strong {
    color: var(--color-primary);
}
.result-actions {
    margin-top: 28px;
    text-align: center;
}

/* ---- Auth Pages ---- */
.auth-container {
    max-width: 420px;
    margin: 80px auto;
    text-align: center;
}
.auth-container h2 {
    font-family: var(--font-family);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: 32px;
    letter-spacing: 2px;
}
.auth-form {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: var(--shadow-md);
    text-align: left;
}
.auth-form .form-group {
    margin-bottom: 20px;
}
.auth-form input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family-sans);
    background: var(--color-bg);
    color: var(--color-text);
    transition: all var(--transition);
}
.auth-form input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}
.form-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 12px 0;
    text-align: center;
}
.form-note strong {
    color: var(--color-primary);
}
.auth-link {
    margin-top: 20px;
    font-size: var(--font-size-sm);
    text-align: center;
    color: var(--color-text-secondary);
}

/* ---- Pricing Cards ---- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
    margin-top: 32px;
}
.pricing-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    text-align: center;
    position: relative;
}
.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.pricing-card.featured {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}
.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--color-primary);
    color: #fff;
    padding: 2px 16px;
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 1px;
}
.pricing-card h3 {
    font-family: var(--font-family);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 8px;
}
.price {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    margin: 12px 0;
}
.price small {
    font-size: var(--font-size-sm);
    color: var(--color-text-dim);
    font-weight: 400;
}
.pricing-card ul {
    margin: 20px 0;
    list-style: none;
    text-align: left;
    line-height: 2.4;
}
.pricing-card ul li {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}
.pricing-card .btn {
    width: 100%;
    margin-top: 12px;
}

/* ---- Footer ---- */
.footer {
    border-top: 1px solid var(--color-border-light);
    padding: 32px 0;
    margin-top: 60px;
    background: var(--color-surface);
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 28px;
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-dim);
}
.footer-inner nav {
    margin-top: 12px;
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}
.footer-inner nav a {
    color: var(--color-text-dim);
    font-size: var(--font-size-xs);
}
.footer-inner nav a:hover {
    color: var(--color-primary);
}

/* ---- Loading State ---- */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--color-text-dim);
}
.loading::after {
    content: '...';
    animation: loadingDots 1.5s infinite;
}
@keyframes loadingDots {
    0% { content: '.'; }
    33% { content: '..'; }
    66% { content: '...'; }
}

/* ---- Toast Notification ---- */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-text);
    color: #fff;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    z-index: 999;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    box-shadow: var(--shadow-lg);
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.toast.error {
    background: var(--color-error);
}
.toast.success {
    background: var(--color-success);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .header-inner { padding: 0 16px; gap: 16px; }
    .container { padding: 24px 16px; }
    .hero { padding: 40px 0 24px; }
    .hero h1 { font-size: var(--font-size-xl); }
    .hero::before { font-size: 40px; }
    .form-section { padding: 24px 16px; }
    .bazi-cards { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .bazi-card { padding: 14px 10px; }
    .gan, .zhi { font-size: 26px; }
    .hour-selector { grid-template-columns: repeat(4, 1fr); }
    .form-row { flex-direction: column; gap: 14px; }
    .nav a { padding: 6px 10px; font-size: var(--font-size-xs); }
    .nav { gap: 4px; }
    .logo { font-size: 18px; }
    .pricing-grid { grid-template-columns: 1fr; }
    .auth-container { margin: 40px 16px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .bazi-cards { grid-template-columns: repeat(4, 1fr); }
}