/**
 * CoolApi 现代主题设计系统 (暗色/亮色双主题)
 * 设计灵感: SiliconFlow / OpenRouter / Groq Cloud
 */

/* ===== CSS Variables (Dark - Default) ===== */
:root {
    --bg-primary: #08090d;
    --bg-secondary: #111318;
    --bg-card: #16181f;
    --bg-card-hover: #1c1f28;
    --bg-input: #1a1d27;
    --border-subtle: #22252f;
    --border-card: #2a2d38;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-dark: #4f46e5;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --accent-glow: 0 0 30px rgba(99,102,241,0.3);
    --success: #22c55e;
    --success-bg: rgba(34,197,94,0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245,158,11,0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239,68,68,0.1);
    --info: #3b82f6;
    --info-bg: rgba(59,130,246,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    --transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
    --code-bg: #1e1e2e;
    --code-text: #f8f8f2;
}

/* ===== CSS Variables (Light Theme) ===== */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --bg-input: #f1f5f9;
    --border-subtle: #e2e8f0;
    --border-card: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent: #6366f1;
    --accent-light: #4f46e5;
    --accent-dark: #4338ca;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --accent-glow: 0 0 30px rgba(99,102,241,0.2);
    --success: #16a34a;
    --success-bg: rgba(22,163,74,0.08);
    --warning: #d97706;
    --warning-bg: rgba(217,119,6,0.08);
    --danger: #dc2626;
    --danger-bg: rgba(220,38,38,0.08);
    --info: #2563eb;
    --info-bg: rgba(37,99,235,0.08);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
    --code-bg: #f1f5f9;
    --code-text: #1e293b;
}

/* ===== Global Reset ===== */
body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    padding-top: 64px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
}

a { color: var(--accent-light); transition: var(--transition); text-decoration: none; }
a:hover { color: var(--accent); text-decoration: none; }

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

/* ===== Navigation Bar (Glass Morphism) ===== */
.navbar-coolapi {
    background: rgba(8,9,13,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0;
}
[data-theme="light"] .navbar-coolapi {
    background: rgba(255,255,255,0.85);
}
[data-theme="light"] .nav-links a:hover,
[data-theme="light"] .nav-links a.active {
    background: rgba(0,0,0,0.04);
}
[data-theme="light"] .nav-user-menu:hover {
    background: rgba(0,0,0,0.04);
}
[data-theme="light"] .nav-dropdown a:hover {
    background: rgba(0,0,0,0.04);
}

.nav-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}
.nav-brand .brand-icon {
    width: 34px; height: 34px;
    background: var(--accent-gradient);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
    color: #fff;
}
.nav-brand:hover { color: var(--text-primary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0; padding: 0;
}

.nav-links a {
    display: flex; align-items: center; gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    background: rgba(255,255,255,0.06);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}
.nav-btn-outline {
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-card);
}
.nav-btn-outline:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}
.nav-btn-primary {
    color: #fff;
    background: var(--accent-gradient);
    box-shadow: var(--accent-glow);
}
.nav-btn-primary:hover {
    opacity: 0.9;
    color: #fff;
    transform: translateY(-1px);
}
.nav-btn-sm { padding: 6px 12px; font-size: 13px; }

.nav-user-menu {
    position: relative;
    display: flex; align-items: center; gap: 8px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
.nav-user-menu:hover { background: rgba(255,255,255,0.06); }
/* 伪元素桥接：填补 hover 间隙，防止 mouseout 误触发关闭 */
.nav-user-menu::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 12px;
    z-index: 1049;
}
.nav-user-avatar {
    width: 30px; height: 30px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
}
.nav-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 6px;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 1050;
}
.nav-user-menu:hover .nav-dropdown,
.nav-dropdown.show { display: block; }
.nav-dropdown a {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    transition: var(--transition);
    text-decoration: none;
}
.nav-dropdown a:hover { background: rgba(255,255,255,0.06); color: var(--text-primary); }
.nav-dropdown hr { margin: 4px 0; border-color: var(--border-subtle); }

/* Theme Toggle */
.theme-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-card);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 17px;
    transition: var(--transition);
    flex-shrink: 0;
}
.theme-toggle:hover {
    color: var(--accent-light);
    border-color: var(--accent);
    background: rgba(99,102,241,0.08);
}
.theme-toggle .fa-sun { display: none; }
.theme-toggle .fa-moon { display: inline-block; }
[data-theme="light"] .theme-toggle .fa-sun { display: inline-block; }
[data-theme="light"] .theme-toggle .fa-moon { display: none; }

/* Mobile */
.nav-toggle {
    display: none;
    background: none; border: none;
    color: var(--text-primary);
    font-size: 22px;
    cursor: pointer;
    padding: 4px;
}
@media (max-width: 768px) {
    .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg-secondary); flex-direction: column; padding: 12px; border-bottom: 1px solid var(--border-card); }
    .nav-links.show { display: flex; }
    .nav-toggle { display: block; }
    .nav-right .nav-btn-outline { display: none; }
}

/* ===== Footer ===== */
.site-footer {
    border-top: 1px solid var(--border-subtle);
    padding: 32px 0;
    margin-top: 60px;
    color: var(--text-muted);
    font-size: 13px;
    text-align: center;
}
.site-footer a { color: var(--text-secondary); }
.site-footer a:hover { color: var(--accent-light); }

/* ===== Hero Section ===== */
.hero-section {
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 14px;
    background: rgba(99,102,241,0.12);
    border: 1px solid rgba(99,102,241,0.25);
    border-radius: 20px;
    color: var(--accent-light);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}
.hero-badge .dot {
    width: 6px; height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.6); }
    50% { box-shadow: 0 0 0 6px rgba(34,197,94,0); }
}
.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin: 0 0 16px;
    color: var(--text-primary);
}
.hero-title .gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.7;
}
.hero-actions {
    display: flex; gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}
.hero-btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}
.hero-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(99,102,241,0.5); color: #fff; }
.hero-btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-card);
}
.hero-btn-secondary:hover { background: var(--bg-card-hover); color: var(--text-primary); }

/* Stats row */
.hero-stats {
    display: flex; justify-content: center; gap: 48px;
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid var(--border-subtle);
}
.hero-stat { text-align: center; }
.hero-stat-num {
    font-size: 28px; font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== Section Header ===== */
.section-header {
    text-align: center;
    margin-bottom: 40px;
    padding-top: 20px;
}
.section-header h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px;
    letter-spacing: -0.5px;
}
.section-header p {
    color: var(--text-muted);
    font-size: 15px;
    margin: 0;
}

/* ===== Bento Grid (Feature Cards) ===== */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.bento-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.bento-card:hover {
    border-color: rgba(99,102,241,0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.bento-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.3s;
}
.bento-card:hover::before { opacity: 1; }
.bento-card-icon {
    width: 44px; height: 44px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    margin-bottom: 14px;
}
.bento-card-icon.purple { background: rgba(99,102,241,0.15); color: var(--accent-light); }
.bento-card-icon.blue { background: rgba(59,130,246,0.15); color: #60a5fa; }
.bento-card-icon.green { background: var(--success-bg); color: var(--success); }
.bento-card-icon.orange { background: var(--warning-bg); color: var(--warning); }
.bento-card-icon.pink { background: rgba(236,72,153,0.15); color: #f472b6; }
.bento-card-icon.cyan { background: rgba(6,182,212,0.15); color: #22d3ee; }
.bento-card h4 {
    font-size: 17px; font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px;
}
.bento-card p {
    font-size: 14px; color: var(--text-muted);
    margin: 0; line-height: 1.6;
}

@media (max-width: 992px) { .bento-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 576px) { .bento-grid { grid-template-columns: 1fr; } }

/* ===== Code Block ===== */
.code-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    position: relative;
}
.code-block pre {
    background: transparent;
    color: var(--text-secondary);
    font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", "SF Mono", Consolas, monospace;
    font-size: 13px;
    line-height: 1.65;
    margin: 0;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
    border: none;
    padding: 0;
}
.code-block .copy-btn {
    position: absolute;
    top: 12px; right: 12px;
    padding: 5px 12px;
    font-size: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}
.code-block .copy-btn:hover { color: var(--text-primary); border-color: var(--text-muted); }

/* ===== Two Column Layout ===== */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}
@media (max-width: 768px) { .two-col { grid-template-columns: 1fr; } }

/* ===== Buttons ===== */
.btn-cool {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    white-space: nowrap;
}
.btn-cool-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 2px 10px rgba(99,102,241,0.3);
}
.btn-cool-primary:hover { opacity: 0.9; transform: translateY(-1px); color: #fff; text-decoration: none; }
.btn-cool-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-card);
}
.btn-cool-outline:hover { background: var(--bg-card-hover); color: var(--text-primary); text-decoration: none; }
.btn-cool-success { background: var(--success); color: #fff; }
.btn-cool-success:hover { opacity: 0.9; color: #fff; text-decoration: none; }
.btn-cool-lg { padding: 13px 28px; font-size: 16px; border-radius: var(--radius-md); }
.btn-cool-sm { padding: 6px 14px; font-size: 12px; }
.btn-cool-block { width: 100%; justify-content: center; }
.btn-cool:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ===== Model Cards ===== */
.model-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
@media (max-width: 992px) { .model-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 576px) { .model-grid { grid-template-columns: 1fr; } }

.model-card-cool {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition);
    position: relative;
}
.model-card-cool:hover {
    border-color: rgba(99,102,241,0.35);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.model-card-cool .vendor-tag {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
}
.model-card-cool .model-title {
    font-size: 16px; font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 4px;
}
.model-card-cool .model-id-tag {
    font-size: 12px;
    color: var(--text-muted);
    font-family: monospace;
    margin-bottom: 10px;
}
.model-card-cool .model-price {
    font-size: 20px; font-weight: 700;
    color: var(--accent-light);
    margin-bottom: 10px;
}
.model-card-cool .model-price small { font-size: 12px; color: var(--text-muted); font-weight: 400; }
.model-card-cool .model-price.fixed { color: var(--warning); }
.model-card-cool .model-footer {
    padding-top: 10px;
    border-top: 1px solid var(--border-subtle);
    font-size: 12px;
    color: var(--text-muted);
}
.model-card-cool .status-dot {
    display: inline-block;
    width: 7px; height: 7px;
    border-radius: 50%;
    margin-right: 4px;
}
.model-card-cool .status-dot.online { background: var(--success); box-shadow: 0 0 6px rgba(34,197,94,0.5); }
.model-card-cool .status-dot.offline { background: var(--text-muted); }

/* ===== Filter Bar ===== */
.filter-bar-cool {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 20px; flex-wrap: wrap;
}
.filter-chip {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border-card);
    background: var(--bg-card);
    color: var(--text-secondary);
    transition: var(--transition);
}
.filter-chip:hover { color: var(--text-primary); border-color: var(--text-muted); }
.filter-chip.active {
    background: rgba(99,102,241,0.15);
    border-color: rgba(99,102,241,0.4);
    color: var(--accent-light);
}
.filter-search {
    margin-left: auto;
    position: relative;
}
.filter-search input {
    background: var(--bg-input);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    padding: 8px 12px 8px 34px;
    font-size: 13px;
    color: var(--text-primary);
    outline: none;
    width: 200px;
    transition: var(--transition);
}
.filter-search input:focus { border-color: var(--accent); width: 240px; }
.filter-search i {
    position: absolute;
    left: 12px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 13px;
}

/* ===== Payment Page ===== */
.pay-container {
    max-width: 440px;
    margin: 80px auto 40px;
}
.pay-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-xl);
    padding: 32px 28px;
    box-shadow: var(--shadow-lg);
}
.pay-card .pay-title {
    font-size: 22px; font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 20px;
    display: flex; align-items: center; gap: 10px;
}
.pay-card .pay-title i {
    font-size: 26px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.pay-balance {
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(99,102,241,0.15);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 24px;
    display: flex; justify-content: space-between; align-items: center;
}
.pay-balance .bal-label { font-size: 13px; color: var(--text-muted); }
.pay-balance .bal-num { font-size: 26px; font-weight: 700; color: var(--text-primary); }
.pay-amount-input {
    margin-bottom: 20px;
}
.pay-amount-input label {
    font-size: 13px; color: var(--text-muted);
    display: block; margin-bottom: 8px;
}
.pay-amount-input .amount-box {
    display: flex; align-items: center;
    background: var(--bg-input);
    border: 2px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 4px;
    transition: var(--transition);
}
.pay-amount-input .amount-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}
.pay-amount-input .amount-prefix {
    padding: 10px 14px;
    font-size: 18px; color: var(--text-muted);
    font-weight: 600;
}
.pay-amount-input input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 10px 8px;
    font-size: 28px; font-weight: 700;
    color: var(--text-primary);
    outline: none;
    min-width: 0;
}
.pay-amount-input .amount-suffix {
    padding: 10px 14px;
    font-size: 14px; color: var(--text-muted);
}
.pay-conversion {
    text-align: right;
    margin-top: 6px;
    font-size: 12px; color: var(--text-muted);
}
.pay-methods {
    display: flex; gap: 12px;
    margin-bottom: 24px;
}
.pay-method {
    flex: 1;
    padding: 14px 12px;
    border: 2px solid var(--border-card);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
}
.pay-method:hover { border-color: var(--text-muted); color: var(--text-primary); }
.pay-method.active {
    border-color: var(--accent);
    background: rgba(99,102,241,0.08);
    color: var(--accent-light);
}
.pay-method i { font-size: 22px; display: block; margin-bottom: 4px; }
.pay-qr {
    text-align: center;
    padding: 24px 0;
}
.pay-qr canvas { border-radius: var(--radius-md); }
.pay-status { margin-top: 12px; font-size: 14px; color: var(--text-secondary); }
.pay-footer-text {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
    font-size: 12px; color: var(--text-muted);
    line-height: 1.8;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center; padding: 60px 20px; color: var(--text-muted);
}
.empty-state i { font-size: 48px; display: block; margin-bottom: 12px; opacity: 0.3; }
.empty-state h4 { font-size: 16px; color: var(--text-secondary); margin: 0 0 6px; }

/* ===== Alerts ===== */
.alert-cool {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 14px;
    margin-bottom: 16px;
    display: flex; align-items: center; gap: 10px;
}
.alert-cool i { font-size: 18px; flex-shrink: 0; }
.alert-cool-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(34,197,94,0.2); }
.alert-cool-error { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239,68,68,0.2); }
.alert-cool-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245,158,11,0.2); }
.alert-cool-info { background: var(--info-bg); color: var(--info); border: 1px solid rgba(59,130,246,0.2); }

/* ===== Section Divider ===== */
.section-divider {
    height: 1px;
    background: var(--border-subtle);
    margin: 60px 0;
}

/* ===== Container ===== */
.cool-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-in {
    animation: fadeInUp 0.5s ease-out forwards;
}
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* ===== Bootstrap Compatibility (Dark Theme) ===== */
/* Panel / Well */
.panel, .panel-default, .well {
    background: var(--bg-card);
    border-color: var(--border-card);
    color: var(--text-primary);
}
.panel-default > .panel-heading {
    background: var(--bg-secondary);
    border-color: var(--border-card);
    color: var(--text-primary);
}
.panel-body { color: var(--text-primary); }
.panel-footer {
    background: var(--bg-secondary);
    border-color: var(--border-card);
    color: var(--text-secondary);
}

/* Page Header */
.page-header {
    border-bottom-color: var(--border-subtle);
}

/* Form Controls */
.form-control {
    background: var(--bg-input);
    color: var(--text-primary);
    border-color: var(--border-card);
}
.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
    background: var(--bg-input);
    color: var(--text-primary);
}
.form-control[readonly] {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}
.form-control::placeholder { color: var(--text-muted); }

/* Buttons */
.btn-default {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-card);
}
.btn-default:hover, .btn-default:focus, .btn-default:active {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-card);
}
.btn-primary {
    background: var(--accent-gradient);
    border-color: transparent;
    color: #fff;
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    opacity: 0.9;
    border-color: transparent;
    color: #fff;
}
.btn-success {
    background: var(--success);
    border-color: var(--success);
}
.btn-xs { font-size: 12px; padding: 3px 8px; }

/* Nav Tabs */
.nav-tabs {
    border-bottom-color: var(--border-card);
}
.nav-tabs > li > a {
    color: var(--text-secondary);
}
.nav-tabs > li > a:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-card);
    color: var(--text-primary);
}
.nav-tabs > li.active > a,
.nav-tabs > li.active > a:hover,
.nav-tabs > li.active > a:focus {
    background: var(--bg-card);
    border-color: var(--border-card);
    border-bottom-color: transparent;
    color: var(--text-primary);
}

/* Alerts */
.alert {
    border-radius: var(--radius-md);
    border: none;
}
.alert-success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(34,197,94,0.2);
}
.alert-danger {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(239,68,68,0.2);
}
.alert-warning {
    background: var(--warning-bg);
    color: var(--warning);
    border: 1px solid rgba(245,158,11,0.2);
}
.alert-info {
    background: var(--info-bg);
    color: var(--info);
    border: 1px solid rgba(59,130,246,0.2);
}

/* Badges */
.badge {
    background: var(--bg-input);
    color: var(--text-secondary);
}

/* Text Muted */
.text-muted { color: var(--text-muted) !important; }

/* HR */
hr {
    border-top-color: var(--border-subtle);
}

/* Checkbox / Radio */
input[type="checkbox"], input[type="radio"] {
    accent-color: var(--accent);
}

/* Table */
.table {
    color: var(--text-primary);
}
.table > thead > tr > th {
    border-bottom-color: var(--border-card);
    color: var(--text-secondary);
}
.table > tbody > tr > td {
    border-top-color: var(--border-subtle);
}
.table-striped > tbody > tr:nth-of-type(odd) {
    background: rgba(128,128,128,0.04);
}
.table-hover > tbody > tr:hover {
    background: rgba(128,128,128,0.06);
}

/* Modal */
.modal-content {
    background: var(--bg-card);
    border-color: var(--border-card);
}
.modal-header {
    border-bottom-color: var(--border-subtle);
}
.modal-footer {
    border-top-color: var(--border-subtle);
}