/* ═══════════════════════════════════════════════════════════
   Happy GOD LLm — Apple HIG Design System
   Refined Daylight / True Obsidian Dark · Swiss precision
   ═══════════════════════════════════════════════════════════ */

:root {
    /* ── Typography ── */
    --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", "Cascadia Code", "JetBrains Mono", "Consolas", monospace;

    /* ── Colors ── */
    --bg-page: #f5f5f7;
    --bg-white: #ffffff;
    --bg-surface: #fafafa;
    --bg-elevated: #ffffff;
    --bg-soft: #f0f0f2;
    --bg-tertiary: #e8e8ed;

    --border: rgba(0, 0, 0, 0.08);
    --border-subtle: rgba(0, 0, 0, 0.04);
    --border-strong: rgba(0, 0, 0, 0.14);

    --text-primary: #1d1d1f;
    --text-secondary: rgba(29, 29, 31, 0.58);
    --text-tertiary: rgba(29, 29, 31, 0.38);
    --text-inverse: #ffffff;

    --accent: #1d1d1f;
    --accent-hover: #2c2c2e;
    --accent-light: rgba(29, 29, 31, 0.08);
    --accent-lighter: rgba(29, 29, 31, 0.05);

    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.08);
    --success-strong: rgba(16, 185, 129, 0.20);

    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.08);
    --warning-strong: rgba(245, 158, 11, 0.18);

    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.08);
    --danger-strong: rgba(239, 68, 68, 0.18);

    --purple: #6e6e73;
    --purple-light: rgba(110, 110, 115, 0.08);

    /* ── Shadows ── */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.03), 0 8px 24px -8px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 2px 8px rgba(0, 0, 0, 0.04), 0 16px 40px -12px rgba(0, 0, 0, 0.14);
    --shadow-modal: 0 4px 12px rgba(0, 0, 0, 0.06), 0 32px 64px -20px rgba(0, 0, 0, 0.22);
    --shadow-glow: 0 0 0 1px rgba(0, 113, 227, 0.06), 0 8px 24px -8px rgba(0, 0, 0, 0.10);

    /* ── Radii ── */
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 26px;
    --radius-pill: 980px;

    /* ── Spacing ── */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;

    /* ── Motion ── */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 180ms var(--ease-out);
    --transition-base: 280ms var(--ease-out);
    --transition-slow: 450ms var(--ease-in-out);
}

/* ── Dark theme (toggled via data-theme="dark" on <html>) ── */
[data-theme="dark"] {
    --bg-page: #000000;
    --bg-white: #161618;
    --bg-surface: #1a1a1c;
    --bg-elevated: #161618;
    --bg-soft: #222226;
    --bg-tertiary: #2c2c30;

    --border: rgba(255, 255, 255, 0.10);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-strong: rgba(255, 255, 255, 0.18);

    --text-primary: #f5f5f7;
    --text-secondary: rgba(245, 245, 247, 0.62);
    --text-tertiary: rgba(245, 245, 247, 0.40);
    --text-inverse: #000000;

    --accent: #f5f5f7;
    --accent-hover: #d9d9de;
    --accent-light: rgba(245, 245, 247, 0.10);
    --accent-lighter: rgba(245, 245, 247, 0.06);

    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.10);
    --success-strong: rgba(16, 185, 129, 0.22);

    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.10);
    --warning-strong: rgba(245, 158, 11, 0.22);

    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.10);
    --danger-strong: rgba(239, 68, 68, 0.22);

    --purple: #98989d;
    --purple-light: rgba(152, 152, 157, 0.10);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.45), 0 1px 2px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.45), 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.5), 0 2px 8px rgba(0, 0, 0, 0.35);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.4), 0 8px 24px -8px rgba(0, 0, 0, 0.5);
    --shadow-card-hover: 0 2px 8px rgba(0, 0, 0, 0.45), 0 16px 40px -12px rgba(0, 0, 0, 0.6);
    --shadow-modal: 0 4px 12px rgba(0, 0, 0, 0.5), 0 32px 64px -20px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 0 1px rgba(77, 159, 255, 0.10), 0 8px 24px -8px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] body::before {
    background: none;
}

[data-theme="dark"] body::after {
    mix-blend-mode: screen;
    opacity: 0.015;
}

[data-theme="dark"] .site-header {
    background: rgba(0, 0, 0, 0.72);
}

[data-theme="dark"] img {
    filter: brightness(0.9);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Page background: subtle warm wash */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: none;
}

/* Subtle grain */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.012;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
    background-size: 240px 240px;
    background-repeat: repeat;
}

/* Content above background */
main, .container, .hero, section, .site-header, .site-footer,
.account-layout, .rankings-layout, .plans-hero, .glass, .glass-card,
.modal-overlay, .modal {
    position: relative;
    z-index: 1;
}

/* ── Links ── */
a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--accent-hover);
}

/* ── Buttons ── */
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
    font-size: inherit;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.82rem;
    font-weight: 550;
    letter-spacing: -0.01em;
    transition: all var(--transition-base);
    border: 1px solid transparent;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    line-height: 1;
}
.btn-sm {
    padding: 7px 13px;
    font-size: 0.78rem;
}
.btn-lg {
    padding: 12px 22px;
    font-size: 0.88rem;
}
.btn:active {
    transform: scale(0.985);
}

.btn-primary {
    background: var(--accent);
    color: var(--text-inverse);
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-white);
    color: var(--text-primary);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
}
.btn-secondary:hover {
    background: var(--bg-soft);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
    padding: 7px 12px;
}
.btn-ghost:hover {
    background: var(--bg-soft);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--bg-white);
    color: var(--danger);
    border: 1px solid rgba(255, 59, 48, 0.20);
    box-shadow: var(--shadow-card);
}
.btn-danger:hover {
    background: var(--danger-light);
    border-color: rgba(255, 59, 48, 0.35);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-1px);
}

/* ── Site Header ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    box-shadow: none;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    text-decoration: none;
}
.logo svg {
    width: 26px;
    height: 26px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--bg-soft);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    transition: all var(--transition-base);
    cursor: pointer;
    margin-right: 4px;
}
.theme-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: scale(1.05);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}
.avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.75rem;
    overflow: hidden;
    flex-shrink: 0;
    border: 1px solid var(--border);
}
.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.user-info {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
    padding-right: 12px;
    border-right: 1px solid var(--border-subtle);
    margin-right: 6px;
}
.user-info .name {
    font-weight: 550;
    font-size: 0.8rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}
.user-info .sub {
    font-size: 0.68rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ── Container ── */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}

/* ── Cards / Glass ── */
.glass {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}
.glass:hover {
    box-shadow: var(--shadow-card-hover);
}

/* ── Landing Hero ── */
.hero {
    padding: 72px 0 56px;
    text-align: center;
}

.hero h1 {
    font-size: 3.25rem;
    font-weight: 700;
    letter-spacing: -0.035em;
    line-height: 1.08;
    margin-bottom: 18px;
    color: var(--text-primary);
}
.hero .highlight-text {
    color: var(--accent);
}

.hero p {
    font-size: 1.08rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto 32px;
    line-height: 1.65;
    letter-spacing: -0.01em;
}

.hero-cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-illustration {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 28px 32px;
    box-shadow: var(--shadow-xl);
    display: inline-block;
    max-width: 100%;
    transition: box-shadow var(--transition-base);
}
.hero-illustration:hover {
    box-shadow: 0 12px 40px -12px rgba(0, 0, 0, 0.14);
}
.hero-illustration svg {
    display: block;
    width: 100%;
    height: auto;
    max-width: 700px;
}

/* ── Sections ── */
section {
    padding: 48px 0;
}

.section-title {
    font-size: 1.6rem;
    font-weight: 650;
    letter-spacing: -0.025em;
    color: var(--text-primary);
    margin: 0 0 28px;
    text-align: center;
}

/* ── Pricing Grid ── */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 18px;
}

.pricing-card {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: all var(--transition-base);
}
.pricing-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
    border-color: var(--border);
}

.pricing-card .model-name {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}
.pricing-card .model-alias {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    letter-spacing: 0.01em;
    font-family: var(--font-mono);
}
.pricing-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin: 0;
}
.pricing-card .price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.82rem;
}
.pricing-card .price-label {
    color: var(--text-tertiary);
    letter-spacing: 0.01em;
}
.pricing-card .price-value {
    font-weight: 550;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

.pricing-card .highlight {
    background: var(--accent-light);
    border: 1px solid rgba(0, 113, 227, 0.15);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
    margin-top: 8px;
}
.pricing-card .highlight .amount {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.025em;
    font-family: var(--font-mono);
}
.pricing-card .highlight .label {
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-top: 4px;
}

/* ── Features ── */
.features-section {
    padding: 48px 0;
    background: var(--bg-white);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 14px;
}

.feature-item {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px 22px;
    box-shadow: var(--shadow-card);
    display: flex;
    gap: 12px;
    align-items: flex-start;
    transition: all var(--transition-base);
}
.feature-item:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
    border-color: var(--border);
}
.feature-item svg {
    flex-shrink: 0;
    color: var(--accent);
    margin-top: 1px;
}
.feature-text strong {
    display: block;
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    color: var(--text-primary);
    margin-bottom: 5px;
}
.feature-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* ── CTA Section ── */
.cta-section {
    padding: 48px 0;
    text-align: center;
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}
.cta-section h2 {
    font-size: 1.7rem;
    font-weight: 650;
    letter-spacing: -0.025em;
    color: var(--text-primary);
    margin: 0 0 10px;
}
.cta-section p {
    color: var(--text-secondary);
    font-size: 1.02rem;
    max-width: 480px;
    margin: 0 auto 22px;
    line-height: 1.6;
}
.cta-section .btn-lg {
    margin: 0 4px;
}

/* ── Footer Links ── */
.footer-links {
    padding: 36px 0 28px;
    background: var(--bg-surface);
}
.footer-links h4 {
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    margin: 0 0 8px;
}
.footer-links a {
    font-size: 0.84rem;
    color: var(--text-tertiary);
    text-decoration: none;
    line-height: 1.8;
    transition: color var(--transition-fast);
}
.footer-links a:hover {
    color: var(--text-secondary);
}
.footer-links .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 24px;
    text-align: center;
}

.site-footer {
    padding: 20px 0;
    text-align: center;
    background: var(--bg-white);
    border-top: 1px solid var(--border-subtle);
}
.site-footer p {
    margin: 0;
    font-size: 0.78rem;
    color: var(--text-tertiary);
    letter-spacing: 0.01em;
}
.site-footer p + p {
    margin-top: 4px;
}

/* ── Account Page ── */
.account-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    padding: 32px 0 56px;
    align-items: start;
}
@media (max-width: 860px) {
    .account-layout {
        grid-template-columns: 1fr;
    }
    .account-sidebar {
        position: static;
    }
}

.account-sidebar {
    position: sticky;
    top: 76px;
}

.profile-card {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    box-shadow: var(--shadow-card);
    text-align: center;
    margin-bottom: 16px;
}
.profile-card .avatar {
    width: 60px;
    height: 60px;
    margin: 0 auto 12px;
    font-size: 1.3rem;
}
.profile-card .github-login {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}
.profile-card .member-since {
    font-size: 0.72rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.balance-card {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 22px 20px;
    box-shadow: var(--shadow-card);
    margin-bottom: 16px;
}
.balance-card .balance-amount {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--success);
    letter-spacing: -0.025em;
    margin-bottom: 4px;
    font-family: var(--font-mono);
}
.balance-card .balance-label {
    font-size: 0.74rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
}
.balance-card .spend-info {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding-top: 10px;
    border-top: 1px solid var(--border-subtle);
}

.trial-progress {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border-subtle);
}
.trial-progress .progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    margin-bottom: 7px;
}
.trial-progress .progress-header .days {
    color: var(--text-secondary);
    font-weight: 500;
    font-family: var(--font-mono);
}
.trial-bar {
    height: 5px;
    background: var(--bg-tertiary);
    border-radius: 980px;
    overflow: hidden;
}
.trial-bar .fill {
    height: 100%;
    background: var(--accent);
    border-radius: 980px;
    transition: width var(--transition-slow);
}
.trial-bar.warning .fill {
    background: var(--warning);
}
.trial-bar.danger .fill {
    background: var(--danger);
}

.keys-section, .usage-section, .plan-card {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 22px 20px;
    box-shadow: var(--shadow-card);
    margin-bottom: 16px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.section-header h3 {
    font-size: 1.02rem;
    font-weight: 600;
    letter-spacing: -0.015em;
}

.plan-card .plan-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}
.plan-card .plan-header h3 {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.015em;
}
.plan-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--accent);
    color: white;
    margin-left: 6px;
    vertical-align: middle;
}
.plan-badge-empty {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.plan-price {
    margin-bottom: 12px;
}
.plan-price .price-display {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.03em;
    line-height: 1;
    font-family: var(--font-mono);
}
.plan-price .price-unit {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-left: 4px;
}
.plan-price .quota-text {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-top: 6px;
}
.plan-price .original-price {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    text-decoration: line-through;
    margin-top: 4px;
}
.plan-price .save-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--success);
    margin-top: 4px;
}

.plan-spent {
    font-size: 0.78rem;
    color: var(--text-secondary);
    padding-top: 8px;
    border-top: 1px solid var(--border-subtle);
    margin-bottom: 14px;
}
.plan-spent strong {
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.plan-reset {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    padding-top: 8px;
    border-top: 1px solid var(--border-subtle);
}

.new-key-form {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}
.new-key-form input {
    flex: 1;
    padding: 9px 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 0.84rem;
    outline: none;
    transition: all var(--transition-base);
    font-family: var(--font-sans);
}
.new-key-form input:focus {
    border-color: var(--accent);
    background: var(--bg-white);
    box-shadow: 0 0 0 3px var(--accent-lighter);
}
.new-key-form input::placeholder {
    color: var(--text-tertiary);
}

.key-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 0;
    border-bottom: 1px solid var(--border-subtle);
}
.key-row:last-child {
    border-bottom: none;
}
.key-info {
    display: flex;
    align-items: center;
    gap: 8px;
}
.key-prefix {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 550;
    color: var(--text-primary);
    background: var(--bg-soft);
    padding: 2px 7px;
    border-radius: var(--radius-sm);
    letter-spacing: -0.02em;
}
.key-name {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.key-actions {
    display: flex;
    gap: 6px;
}

.usage-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}
.usage-table th {
    text-align: left;
    padding: 7px 0;
    color: var(--text-tertiary);
    font-weight: 500;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.usage-table td {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}
.usage-table tr:last-child td {
    border-bottom: none;
}
.usage-table .model-alias {
    font-family: var(--font-mono);
    color: var(--text-primary);
    font-weight: 500;
}
.usage-table .cost {
    font-family: var(--font-mono);
    color: var(--success);
    font-weight: 500;
}

.empty-state {
    text-align: center;
    padding: 36px 0;
    color: var(--text-tertiary);
}
.empty-state svg {
    width: 42px;
    height: 42px;
    margin-bottom: 10px;
    opacity: 0.4;
}
.empty-state p {
    font-size: 0.82rem;
    letter-spacing: -0.01em;
}

.upgrade-section {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border-subtle);
}
.upgrade-header {
    font-size: 0.82rem;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.plan-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 8px;
}
.plan-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 16px 12px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    background: var(--bg-white);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    font-family: var(--font-sans);
}
.plan-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--border);
}
.plan-btn-price {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.02em;
    font-family: var(--font-mono);
}
.plan-btn-name {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}
.plan-btn-quota {
    font-size: 0.66rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.plan-btn-starter {
    border-color: var(--border-subtle);
}
.plan-btn-pro {
    background: var(--accent-light);
    border-color: rgba(0, 113, 227, 0.20);
    color: var(--accent);
}
.plan-btn-enterprise {
    background: var(--purple-light);
    border-color: rgba(175, 82, 222, 0.18);
}

/* ── Plans Page ── */
.plans-hero {
    padding: 56px 0 40px;
    text-align: center;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
}
.plans-hero h1 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 14px;
}
.plans-hero p {
    font-size: 1.06rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto 28px;
    line-height: 1.6;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 18px;
    padding: 32px 0;
}

.plan-card {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px 26px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.plan-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-3px);
    border-color: var(--border);
}
.plan-card .tier-label {
    font-size: 0.74rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: 5px;
}
.plan-card .plan-name {
    font-size: 1.55rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.plan-card .popular-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--accent);
    color: white;
    font-size: 0.68rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 980px;
    letter-spacing: 0.02em;
}
.plan-card .plan-price-block {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-subtle);
}
.plan-card .price-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
}
.plan-card .price-amount {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.03em;
    line-height: 1;
    font-family: var(--font-mono);
}
.plan-card .price-unit {
    font-size: 0.84rem;
    color: var(--text-secondary);
}
.plan-card .quota-text {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-top: 6px;
}
.plan-card .original-price {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    text-decoration: line-through;
    margin-top: 6px;
}
.plan-card .save-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--success);
    margin-top: 5px;
}
.plan-card .plan-desc {
    font-size: 0.86rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}
.plan-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.plan-card ul li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}
.plan-card ul li svg {
    flex-shrink: 0;
    color: var(--success);
}
.plan-card .card-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.all-plans-include {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    text-align: center;
    margin-top: 32px;
}
.all-plans-include h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}
.all-plans-include ul {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 7px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    text-align: left;
    max-width: 460px;
}
.all-plans-include ul li {
    padding-left: 22px;
    position: relative;
}
.all-plans-include ul li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 5px;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
}

/* ── Resources Page ── */
.resources-layout {
    padding: 32px 0 40px;
}
.resources-hero {
    text-align: center;
    margin-bottom: 36px;
}
.resources-hero .section-title {
    margin-bottom: 10px;
}
.resources-hero .section-sub {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0 auto;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    margin-top: 10px;
}
.resource-card {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 22px 22px;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}
.resource-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
    border-color: var(--border);
}
.resource-card .card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--accent-lighter);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    color: var(--accent);
}
.resource-card .card-icon svg {
    width: 20px;
    height: 20px;
}
.resource-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 7px;
    letter-spacing: -0.015em;
}
.resource-card p {
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}
.resource-card .card-tag {
    display: inline-block;
    font-size: 0.72rem;
    padding: 3px 8px;
    border-radius: 980px;
    background: var(--bg-soft);
    color: var(--text-tertiary);
    font-weight: 500;
    margin-bottom: 12px;
}
.resource-card .card-link {
    display: block;
    font-size: 0.84rem;
    font-weight: 550;
    color: var(--accent);
    letter-spacing: -0.01em;
}

.faq-section {
    margin-top: 40px;
}
.faq-item {
    border-bottom: 1px solid var(--border-subtle);
    padding: 18px 0;
}
.faq-item:last-child {
    border-bottom: none;
}
.faq-q {
    font-weight: 600;
    font-size: 0.98rem;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}
.faq-a {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ── Docs Page ── */
.docs-page {
    min-height: 100vh;
    background: var(--bg-page);
}
.docs-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 36px;
    padding: 28px 0 48px;
    align-items: start;
    max-width: 1160px;
    margin: 0 auto;
    width: 100%;
}
@media (max-width: 900px) {
    .docs-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .docs-sidebar {
        position: static;
    }
    .docs-main {
        max-width: 100%;
    }
}
.docs-main {
    max-width: 760px;
    width: 100%;
    margin: 0 auto;
}

.docs-sidebar {
    position: sticky;
    top: 80px;
}
.docs-sidebar nav {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    box-shadow: var(--shadow-card);
}
.docs-sidebar .nav-label {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-tertiary);
    font-weight: 550;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-subtle);
}
.docs-sidebar a {
    display: block;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    position: relative;
}
.docs-sidebar a:hover {
    background: var(--bg-soft);
    color: var(--text-primary);
}
.docs-sidebar a.active {
    background: var(--accent-lighter);
    color: var(--accent);
    font-weight: 500;
}
.docs-sidebar a.active::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 14px;
    border-radius: 2px;
    background: var(--accent);
}

.doc-section {
    margin-bottom: 18px;
    padding: 20px 22px;
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}
.doc-section h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 12px;
    padding-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--text-primary);
}
.doc-section h3 svg {
    width: 17px;
    height: 17px;
    flex-shrink: 0;
    color: var(--accent);
    opacity: 0.8;
}
.doc-section p,
.doc-section li {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9rem;
}
.doc-section ul {
    padding-left: 18px;
    margin-bottom: 8px;
}
.doc-section ul li {
    margin-bottom: 3px;
}
.doc-section strong {
    color: var(--text-primary);
}
.doc-section a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
    text-decoration-thickness: 1px;
    transition: opacity var(--transition-fast);
}
.doc-section a:hover {
    opacity: 0.75;
}

.section-divider {
    height: 1px;
    margin: 18px 0;
    background: linear-gradient(to right, transparent, var(--border-subtle), transparent);
}

.code-block {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    overflow-x: auto;
    margin: 8px 0 14px;
    color: var(--text-primary);
    line-height: 1.6;
}
.code-block .comment {
    color: var(--text-tertiary);
}
.code-block .keyword {
    color: var(--accent);
}
.code-block .string {
    color: var(--success);
}
.code-block .number {
    color: var(--warning);
}

.doc-callout {
    background: var(--accent-lighter);
    border-left: 3px solid var(--accent);
    padding: 10px 14px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 10px 0;
    font-size: 0.84rem;
    color: var(--text-secondary);
    display: flex;
    gap: 8px;
    align-items: flex-start;
}
.doc-callout svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 1px;
    color: var(--accent);
}
.doc-callout .callout-text {
    flex: 1;
}
.doc-callout.warn {
    background: var(--warning-light);
    border-left-color: var(--warning);
}
.doc-callout.warn svg {
    color: var(--warning);
}

.pro-tip {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    background: var(--success-light);
    color: var(--success);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 550;
    margin-left: 4px;
    vertical-align: middle;
}
.heads-up {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    background: var(--warning-light);
    color: var(--warning);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 550;
    margin-left: 4px;
    vertical-align: middle;
}

.endpoint-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
    margin: 8px 0 14px;
}
.endpoint-table th {
    padding: 7px 10px;
    text-align: left;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    font-weight: 550;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-soft);
}
.endpoint-table td {
    padding: 7px 10px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    vertical-align: top;
}
.endpoint-table tbody tr:last-child td {
    border-bottom: none;
}
.endpoint-table td:first-child {
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.78rem;
}
.endpoint-table .method-get {
    color: var(--success);
    font-weight: 500;
}
.endpoint-table .method-post {
    color: var(--accent);
    font-weight: 500;
}
.endpoint-table code {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    background: var(--bg-soft);
    padding: 1px 4px;
    border-radius: 3px;
    color: var(--text-primary);
}

.test-api-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: var(--accent);
    color: white;
    border: none;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
    margin-top: 6px;
    vertical-align: middle;
}
.test-api-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
}
.test-api-btn:active {
    transform: translateY(0);
}
.test-api-btn svg {
    width: 14px;
    height: 14px;
}

/* Docs modal */
.modal-overlay-docs {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.30);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1000;
    display: none;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 16px;
}
.modal-overlay-docs.open {
    display: flex;
}
.modal-drawer {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    width: 100%;
    max-width: 520px;
    max-height: 80vh;
    overflow-y: auto;
    padding: 22px 24px 24px;
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.18);
    animation: drawerSlide 0.22s var(--ease-out);
}
@keyframes drawerSlide {
    from { transform: translateY(16px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
.modal-drawer h2 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
}
.modal-drawer h2 svg {
    width: 17px;
    height: 17px;
    color: var(--accent);
}
.modal-drawer .modal-sub {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-bottom: 14px;
}
.modal-close-docs {
    position: absolute;
    top: 12px;
    right: 14px;
    background: var(--bg-soft);
    border: 1px solid var(--border-subtle);
    border-radius: 50%;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    font-size: 1rem;
    line-height: 1;
}
.modal-close-docs:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}
.modal-field-docs label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    font-weight: 550;
    margin-bottom: 6px;
}
.modal-field-docs select,
.modal-field-docs textarea {
    width: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 8px 10px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
}
.modal-field-docs select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11' viewBox='0 0 24 24' fill='none' stroke='rgba(0,0,0,0.35)' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
}
.modal-field-docs select:focus,
.modal-field-docs textarea:focus {
    border-color: var(--accent);
}
.modal-field-docs textarea {
    resize: vertical;
    min-height: 90px;
    line-height: 1.5;
    margin-bottom: 10px;
}
.modal-actions-docs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.modal-actions-docs .btn-docs {
    padding: 8px 14px;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--bg-white);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.modal-actions-docs .btn-docs:hover {
    background: var(--bg-soft);
}
.modal-actions-docs .btn-docs-primary {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}
.modal-actions-docs .btn-docs-primary:hover {
    background: var(--accent-hover);
}
.modal-actions-docs .btn-docs svg {
    width: 13px;
    height: 13px;
}

/* Toast (used by app.js) */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 10px 16px;
    box-shadow: var(--shadow-xl);
    font-size: 0.8rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 2000;
    animation: toastIn 0.25s var(--ease-out);
    max-width: 320px;
}
@keyframes toastIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.toast.error {
    border-color: rgba(255, 59, 48, 0.25);
    color: var(--danger);
}
.toast.success {
    border-color: rgba(52, 199, 89, 0.25);
    color: var(--success);
}

/* ── Rankings Page ── */
.rankings-layout {
    padding: 32px 0 64px;
}
.rankings-header {
    text-align: center;
    margin-bottom: 40px;
}
.rankings-header h1 {
    font-size: 2.1rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 10px;
}
.rankings-header p {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 460px;
    margin: 0 auto;
    line-height: 1.55;
    letter-spacing: -0.01em;
}

.provider-section {
    margin-bottom: 40px;
}
.provider-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
}
.provider-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 11px;
    border-radius: var(--radius-pill);
    font-size: 0.7rem;
    font-weight: 500;
    background: var(--bg-soft);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}
.provider-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.rankings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 14px;
}
.ranking-card {
    background: var(--bg-white);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px 20px;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.ranking-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
    border-color: var(--border);
}
.ranking-card .rank {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--bg-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}
.ranking-card .rank.gold {
    background: var(--warning);
    color: white;
}
.ranking-card .rank.silver {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}
.ranking-card .rank.bronze {
    background: var(--danger);
    color: white;
}
.ranking-card .model-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    padding-right: 34px;
    letter-spacing: -0.015em;
    color: var(--text-primary);
}
.ranking-card .model-developer {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-bottom: 10px;
}
.ranking-card .model-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}
.tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 7px;
    border-radius: var(--radius-pill);
    font-size: 0.66rem;
    font-weight: 500;
    background: var(--bg-soft);
    color: var(--text-tertiary);
    border: 1px solid var(--border-subtle);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.tag.best-for {
    background: var(--accent-lighter);
    color: var(--accent);
    border-color: rgba(0, 113, 227, 0.15);
}
.ranking-card .rationale {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.55;
    padding-top: 10px;
    border-top: 1px solid var(--border-subtle);
}
.ranking-card .rationale strong {
    color: var(--text-primary);
    font-weight: 500;
}
.ranking-card .facts {
    font-size: 0.74rem;
    color: var(--text-tertiary);
    margin-top: 6px;
    font-family: var(--font-mono);
}

/* ── Modals (generic) ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.32);
    backdrop-filter: blur(24px) saturate(120%);
    -webkit-backdrop-filter: blur(24px) saturate(120%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 16px;
    animation: fadeIn 0.2s ease;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.modal {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-modal);
    width: 100%;
    max-width: 500px;
    max-height: 86vh;
    overflow-y: auto;
    padding: 26px 28px;
    animation: modalIn 0.25s var(--ease-out);
}
@keyframes modalIn {
    from { opacity: 0; transform: scale(0.96) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal::-webkit-scrollbar {
    width: 4px;
}
.modal::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}
.modal-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 14px;
}
.modal-head h3 {
    font-size: 1.08rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}
.modal-head .modal-sub {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 3px;
}
.modal-close {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 6px;
    transition: all var(--transition-fast);
    font-size: 1.2rem;
    line-height: 1;
}
.modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-soft);
}

.modal-section {
    margin-bottom: 18px;
}
.modal-section h4 {
    font-size: 0.66rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 10px;
    padding-bottom: 7px;
    border-bottom: 1px solid var(--border-subtle);
}
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 12px;
}
@media (max-width: 440px) {
    .detail-grid {
        grid-template-columns: 1fr;
    }
}
.detail-item .d-label {
    font-size: 0.66rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 2px;
}
.detail-item .d-value {
    font-size: 0.82rem;
    color: var(--text-primary);
    font-weight: 500;
    letter-spacing: -0.01em;
}
.detail-item .d-value.mono {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.detail-item .d-value.green {
    color: var(--success);
    font-family: var(--font-mono);
}
.detail-item .d-value.red {
    color: var(--danger);
}

.modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--border-subtle);
}

.form-group {
    margin-bottom: 14px;
}
.form-group label {
    display: block;
    font-size: 0.76rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 5px;
}
.form-group input, .form-group select {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: var(--font-sans);
    outline: none;
    transition: all var(--transition-fast);
}
.form-group input::placeholder {
    color: var(--text-tertiary);
}
.form-group input:focus, .form-group select:focus {
    border-color: var(--accent);
    background: var(--bg-white);
    box-shadow: 0 0 0 3px var(--accent-lighter);
}
.form-group select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11' viewBox='0 0 24 24' fill='none' stroke='rgba(0,0,0,0.35)' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
    cursor: pointer;
}

/* ── Responsive ── */
@media (max-width: 640px) {
    .container {
        padding: 0 18px;
    }
    .hero h1 {
        font-size: 2.1rem;
    }
    .hero p {
        font-size: 0.95rem;
    }
    .section-title {
        font-size: 1.35rem;
    }
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .nav-actions .user-info {
        display: none;
    }
    .modal {
        max-width: 100%;
        margin: 12px;
        border-radius: var(--radius-lg);
    }
    .modal-overlay {
        padding: 10px;
        align-items: flex-end;
    }
    .rankings-grid {
        grid-template-columns: 1fr;
    }
    .plans-grid {
        grid-template-columns: 1fr;
    }
    .resources-grid {
        grid-template-columns: 1fr;
    }
    .docs-layout {
        grid-template-columns: 1fr;
    }
    .account-layout {
        padding: 0;
    }
    .account-sidebar {
        position: static;
    }
}

/* ── Server status pill (header) ── */
.server-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: var(--bg-soft);
    border: 1px solid var(--border-subtle);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}
.server-status .status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--text-tertiary);
    flex-shrink: 0;
}
.server-status .status-text {
    font-size: 0.72rem;
}

/* ── Account page right column ── */
.account-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-width: 0;
}

/* ── Keys list container ── */
.keys-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
}

/* ── Playground panel variants ── */
.request-panel,
.response-panel {
    min-width: 0;
}


/* ── Numeric precision (spec: tabular numerals everywhere) ── */
.num,
td,
.stat-value,
.plan-price,
.usage-value,
.key-prefix,
.detail-item .d-value,
.user-info .sub {
    font-variant-numeric: tabular-nums;
}

/* ── Headings tracking (HIG: tight display type) ── */
h1, h2, h3 {
    letter-spacing: -0.025em;
}

/* ── Button press physics ── */
.btn:active {
    transform: scale(0.98);
}

/* ── Status dots (semantic only) ── */
.status-dot,
.server-status .status-dot {
    transition: background var(--transition-fast);
}

/* ── Focus visibility ── */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}