/* ═══════════════════════════════════════════════════════════════
   DIALOGIX — AION v3 Commercial Website Design System
   Premium dark-mode, glassmorphism, brand-aligned
   ═══════════════════════════════════════════════════════════════ */

/* ── Reset & Tokens ────────────────────────────────────────── */
:root {
    --bg-void: #06060e;
    --bg-primary: #0a0a14;
    --bg-secondary: #0f0f1a;
    --bg-card: rgba(16, 16, 30, 0.75);
    --bg-card-solid: #10101e;
    --bg-elevated: rgba(22, 22, 40, 0.9);
    --bg-input: rgba(12, 12, 22, 0.8);

    --border-subtle: rgba(60, 60, 100, 0.25);
    --border-active: rgba(100, 80, 255, 0.4);

    --text-primary: #e4e4f0;
    --text-secondary: #9090b0;
    --text-muted: #5a5a78;
    --text-bright: #ffffff;

    --accent-primary: #6c5ce7;
    --accent-secondary: #a29bfe;
    --accent-cyan: #00cec9;
    --accent-green: #00e676;
    --accent-red: #ff5252;
    --accent-orange: #ffab40;

    --gradient-brand: linear-gradient(135deg, #6c5ce7 0%, #00cec9 100%);
    --gradient-hero: linear-gradient(160deg, #6c5ce7 0%, #a29bfe 40%, #00cec9 100%);
    --gradient-card: linear-gradient(180deg, rgba(100, 80, 255, 0.05) 0%, transparent 60%);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 60px rgba(108, 92, 231, 0.12);

    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-pill: 100px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s ease;

    --max-width: 1200px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-void);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 800px 500px at 20% 10%, rgba(108, 92, 231, 0.08) 0%, transparent 70%),
        radial-gradient(ellipse 600px 400px at 80% 50%, rgba(0, 206, 201, 0.06) 0%, transparent 70%),
        radial-gradient(ellipse 500px 400px at 40% 80%, rgba(108, 92, 231, 0.04) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ── Navigation ──────────────────────────────────────────────── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(6, 6, 14, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo {
    width: 36px;
    height: 36px;
    background: var(--gradient-brand);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 0 20px rgba(108, 92, 231, 0.25);
}

.nav-name {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 2px;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-links a:hover { color: var(--text-bright); }
.nav-links a.active { color: var(--accent-secondary); }

.nav-cta {
    padding: 8px 22px;
    border-radius: var(--radius-pill);
    background: var(--gradient-brand);
    color: white !important;
    font-size: 0.82rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 0 20px rgba(108, 92, 231, 0.2);
    -webkit-text-fill-color: white;
}

.nav-cta:hover {
    box-shadow: 0 0 30px rgba(108, 92, 231, 0.4);
    transform: translateY(-1px);
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
    position: relative;
    padding: 160px 0 100px;
    text-align: center;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    width: 700px;
    height: 700px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
}

.hero-glow-1 {
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-primary);
    animation: glowPulse 6s ease-in-out infinite;
}

.hero-glow-2 {
    top: 0;
    right: -200px;
    background: var(--accent-cyan);
    opacity: 0.08;
    animation: glowPulse 8s ease-in-out infinite reverse;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.12; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.2; transform: translateX(-50%) scale(1.1); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: var(--radius-pill);
    background: rgba(108, 92, 231, 0.12);
    border: 1px solid rgba(108, 92, 231, 0.25);
    color: var(--accent-secondary);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 28px;
    animation: fadeSlideUp 0.6s ease both;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-green);
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.4); }
    50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(0, 230, 118, 0); }
}

.hero h1 {
    font-size: clamp(2.4rem, 5.5vw, 4.2rem);
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.1;
    margin-bottom: 22px;
    animation: fadeSlideUp 0.6s ease 0.1s both;
}

.gradient-text {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 36px;
    line-height: 1.7;
    animation: fadeSlideUp 0.6s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeSlideUp 0.6s ease 0.3s both;
}

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

/* ── Buttons ─────────────────────────────────────────────────── */
.btn-primary {
    padding: 14px 36px;
    border-radius: var(--radius-pill);
    background: var(--gradient-brand);
    color: white;
    font-size: 0.92rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
    font-family: inherit;
}

.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(108, 92, 231, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    padding: 14px 36px;
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--text-primary);
    font-size: 0.92rem;
    font-weight: 600;
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-secondary);
    background: rgba(108, 92, 231, 0.06);
}

/* ── Stats Row ───────────────────────────────────────────────── */
.stats-row {
    display: flex;
    justify-content: center;
    gap: 48px;
    animation: fadeSlideUp 0.6s ease 0.4s both;
}

.stat-item { text-align: center; }

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 4px;
}

/* ── Sections ────────────────────────────────────────────────── */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.section-head {
    text-align: center;
    margin-bottom: 60px;
}

.section-head h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 14px;
}

.section-head p {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* ── Glass Cards ─────────────────────────────────────────────── */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.glass-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-card);
    pointer-events: none;
}

.glass-card:hover {
    border-color: var(--border-active);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 18px;
}

.glass-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-bright);
}

.glass-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ── Terminal Mockup ─────────────────────────────────────────── */
.terminal {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    margin: 0 auto;
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27c93f; }

.terminal-title {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-left: 8px;
    font-family: 'JetBrains Mono', monospace;
}

.terminal-body {
    padding: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    line-height: 1.8;
    color: var(--accent-secondary);
    min-height: 200px;
    white-space: pre-wrap;
}

.terminal-body .cmd { color: var(--accent-green); }
.terminal-body .comment { color: var(--text-muted); }
.terminal-body .string { color: var(--accent-orange); }
.terminal-body .key { color: var(--accent-cyan); }

/* ── Pricing ─────────────────────────────────────────────────── */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    align-items: start;
}

.price-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 36px 28px;
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.price-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-card);
    pointer-events: none;
}

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

.price-card.featured {
    border-color: var(--accent-primary);
    box-shadow: 0 0 40px rgba(108, 92, 231, 0.15);
}

.price-card.featured::after {
    content: 'POPULAR';
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    background: var(--gradient-brand);
    color: white;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.price-tier {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-secondary);
    margin-bottom: 8px;
}

.price-amount {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-bright);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 4px;
}

.price-amount .currency { font-size: 1.2rem; color: var(--text-muted); vertical-align: top; }
.price-amount .period { font-size: 0.85rem; color: var(--text-muted); font-weight: 400; }

.price-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    line-height: 1.5;
}

.price-features {
    list-style: none;
    margin-bottom: 32px;
}

.price-features li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 8px 0;
    border-bottom: 1px solid rgba(60, 60, 100, 0.12);
    display: flex;
    align-items: center;
    gap: 10px;
}

.price-features li::before {
    content: '✓';
    color: var(--accent-green);
    font-weight: 700;
    font-size: 0.9rem;
}

.price-card .btn-primary,
.price-card .btn-secondary {
    width: 100%;
    text-align: center;
}

/* ── API/Split Section ───────────────────────────────────────── */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.split-text h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.split-text p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.check-list {
    list-style: none;
    margin-bottom: 28px;
}

.check-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.check-list li::before {
    content: '✓';
    color: var(--accent-green);
    font-weight: 700;
}

/* ── Docs ─────────────────────────────────────────────────────── */
.docs-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 40px;
    align-items: start;
}

.docs-nav {
    position: sticky;
    top: 84px;
}

.docs-nav a {
    display: block;
    padding: 8px 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-left: 2px solid transparent;
    transition: all var(--transition-fast);
}

.docs-nav a:hover,
.docs-nav a.active {
    color: var(--accent-secondary);
    border-left-color: var(--accent-primary);
    background: rgba(108, 92, 231, 0.06);
}

.docs-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 48px 0 16px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

.docs-content h2:first-child {
    margin-top: 0;
    border-top: none;
    padding-top: 0;
}

.docs-content p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.code-block {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    line-height: 1.8;
    color: var(--accent-secondary);
    margin-bottom: 24px;
    overflow-x: auto;
    white-space: pre;
    position: relative;
}

.code-block .label {
    position: absolute;
    top: 8px;
    right: 12px;
    font-size: 0.62rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.endpoint-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.endpoint-badge.get { background: rgba(0, 206, 201, 0.12); color: var(--accent-cyan); }
.endpoint-badge.post { background: rgba(0, 230, 118, 0.12); color: var(--accent-green); }

.param-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
}

.param-table th, .param-table td {
    padding: 10px 14px;
    text-align: left;
    font-size: 0.82rem;
    border-bottom: 1px solid var(--border-subtle);
}

.param-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.param-table td { color: var(--text-secondary); }
.param-table td code {
    background: rgba(108, 92, 231, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: var(--accent-secondary);
}

/* ── Portal ──────────────────────────────────────────────────── */
.portal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.form-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 36px;
}

.form-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-bright);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    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='%239090b0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.key-display {
    background: var(--bg-primary);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius);
    padding: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    color: var(--accent-green);
    word-break: break-all;
    margin-top: 16px;
    display: none;
}

.key-display.visible { display: block; }

.key-warning {
    font-size: 0.75rem;
    color: var(--accent-orange);
    margin-top: 8px;
    display: none;
}

.key-warning.visible { display: block; }

.usage-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 36px;
}

.usage-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid rgba(60, 60, 100, 0.12);
}

.usage-stat:last-child { border-bottom: none; }

.usage-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.usage-value {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-bright);
}

.usage-bar-track {
    height: 6px;
    background: var(--bg-void);
    border-radius: 3px;
    margin-top: 12px;
    overflow: hidden;
}

.usage-bar-fill {
    height: 100%;
    background: var(--gradient-brand);
    border-radius: 3px;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-subtle);
    position: relative;
    z-index: 1;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 12px;
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 4px 0;
    transition: color var(--transition-fast);
}

.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 20px 24px 0;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

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

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 900px) {
    .split { grid-template-columns: 1fr; gap: 40px; }
    .docs-layout { grid-template-columns: 1fr; }
    .docs-nav { position: static; display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 20px; }
    .docs-nav a { border-left: none; border-bottom: 2px solid transparent; padding: 6px 12px; }
    .portal-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .stats-row { gap: 24px; flex-wrap: wrap; }
}

@media (max-width: 640px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2rem; }
    .hero-actions { flex-direction: column; align-items: center; }
    .card-grid { grid-template-columns: 1fr; }
}

/* ── Utility ─────────────────────────────────────────────────── */
.mt-2 { margin-top: 16px; }
.mb-4 { margin-bottom: 32px; }
.text-center { text-align: center; }