/* ═══════════════════════════════════════════════════════════════
   LUMINA DESIGN SYSTEM v2.0
   A premium product-grade design language.
   Not a WordPress theme. A digital product.
   ═══════════════════════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
    /* Color System */
    --ls-primary: #ff6b1a;
    --ls-primary-hover: #e85d10;
    --ls-primary-subtle: rgba(255,107,26,.08);
    --ls-primary-glow: rgba(255,107,26,.2);

    --ls-surface: #ffffff;
    --ls-surface-raised: #fafafa;
    --ls-surface-overlay: rgba(255,255,255,.85);
    --ls-canvas: #f4f4f5;
    
    --ls-text-primary: #18181b;
    --ls-text-secondary: #52525b;
    --ls-text-tertiary: #a1a1aa;
    --ls-text-inverse: #fafafa;
    
    --ls-border: #e4e4e7;
    --ls-border-hover: #d4d4d8;
    --ls-border-focus: var(--ls-primary);
    
    --ls-success: #16a34a;
    --ls-warning: #f59e0b;
    --ls-error: #dc2626;
    --ls-info: #2563eb;

    /* Typography */
    --ls-font-display: 'Inter', system-ui, -apple-system, sans-serif;
    --ls-font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --ls-font-mono: 'JetBrains Mono', 'SF Mono', monospace;

    /* Spacing (8px grid) */
    --ls-space-1: 4px;
    --ls-space-2: 8px;
    --ls-space-3: 12px;
    --ls-space-4: 16px;
    --ls-space-5: 20px;
    --ls-space-6: 24px;
    --ls-space-8: 32px;
    --ls-space-10: 40px;
    --ls-space-12: 48px;
    --ls-space-16: 64px;
    --ls-space-20: 80px;
    --ls-space-24: 96px;

    /* Radii */
    --ls-radius-sm: 8px;
    --ls-radius-md: 12px;
    --ls-radius-lg: 16px;
    --ls-radius-xl: 24px;
    --ls-radius-full: 9999px;

    /* Shadows */
    --ls-shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --ls-shadow-md: 0 4px 6px -1px rgba(0,0,0,.05), 0 2px 4px -2px rgba(0,0,0,.05);
    --ls-shadow-lg: 0 10px 15px -3px rgba(0,0,0,.06), 0 4px 6px -4px rgba(0,0,0,.06);
    --ls-shadow-xl: 0 20px 25px -5px rgba(0,0,0,.06), 0 8px 10px -6px rgba(0,0,0,.06);
    --ls-shadow-glow: 0 0 0 1px var(--ls-primary-subtle), 0 8px 24px var(--ls-primary-glow);

    /* Motion */
    --ls-ease: cubic-bezier(.4, 0, .2, 1);
    --ls-ease-spring: cubic-bezier(.34, 1.56, .64, 1);
    --ls-duration-fast: 150ms;
    --ls-duration-base: 250ms;
    --ls-duration-slow: 400ms;

    /* Layout */
    --ls-container: 1200px;
    --ls-container-tight: 720px;
    --ls-nav-height: 64px;
    --ls-bottom-nav-height: 72px;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── Base Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; scroll-behavior: smooth; }
body { font-family: var(--ls-font-body); font-size: 15px; line-height: 1.6; color: var(--ls-text-primary); background: var(--ls-surface); -webkit-tap-highlight-color: transparent; }
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }
::selection { background: var(--ls-primary); color: white; }

/* ── Container ── */
.ls-contain { max-width: var(--ls-container); margin: 0 auto; padding: 0 var(--ls-space-5); }
.ls-contain--tight { max-width: var(--ls-container-tight); }

/* ── Typography Scale ── */
.ls-display { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 700; line-height: 1.05; letter-spacing: -.03em; color: var(--ls-text-primary); }
.ls-h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; line-height: 1.1; letter-spacing: -.025em; }
.ls-h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 600; line-height: 1.15; letter-spacing: -.02em; }
.ls-h3 { font-size: clamp(1.15rem, 2vw, 1.375rem); font-weight: 600; line-height: 1.25; letter-spacing: -.015em; }
.ls-body { font-size: .9375rem; line-height: 1.6; color: var(--ls-text-secondary); }
.ls-caption { font-size: .8125rem; line-height: 1.4; color: var(--ls-text-tertiary); }
.ls-overline { font-size: .6875rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--ls-primary); }

/* ── Buttons ── */
.ls-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--ls-space-2);
    padding: var(--ls-space-3) var(--ls-space-5);
    font-size: .875rem; font-weight: 600; line-height: 1;
    border: 1px solid transparent; border-radius: var(--ls-radius-md);
    transition: all var(--ls-duration-base) var(--ls-ease);
    white-space: nowrap; text-decoration: none;
}
.ls-btn--primary { background: var(--ls-primary); color: white; border-color: var(--ls-primary); }
.ls-btn--primary:hover { background: var(--ls-primary-hover); transform: translateY(-1px); box-shadow: var(--ls-shadow-glow); }
.ls-btn--secondary { background: var(--ls-text-primary); color: var(--ls-text-inverse); }
.ls-btn--secondary:hover { opacity: .9; transform: translateY(-1px); }
.ls-btn--ghost { background: transparent; color: var(--ls-text-primary); border-color: var(--ls-border); }
.ls-btn--ghost:hover { background: var(--ls-canvas); border-color: var(--ls-border-hover); }
.ls-btn--lg { padding: var(--ls-space-4) var(--ls-space-8); font-size: .9375rem; border-radius: var(--ls-radius-lg); }

/* ── Cards ── */
.ls-card {
    background: var(--ls-surface);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-lg);
    overflow: hidden;
    transition: all var(--ls-duration-base) var(--ls-ease);
}
.ls-card:hover { border-color: var(--ls-border-hover); box-shadow: var(--ls-shadow-lg); transform: translateY(-2px); }
.ls-card__media { position: relative; overflow: hidden; }
.ls-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--ls-duration-slow) var(--ls-ease); }
.ls-card:hover .ls-card__media img { transform: scale(1.03); }
.ls-card__body { padding: var(--ls-space-5); }

/* ── Section ── */
.ls-section { padding: var(--ls-space-20) 0; }
.ls-section--flush { padding: 0; }
.ls-section__header { margin-bottom: var(--ls-space-12); }
.ls-section__header .ls-overline { margin-bottom: var(--ls-space-3); }
.ls-section__header .ls-h2 { margin-bottom: var(--ls-space-3); }
.ls-section__header .ls-body { max-width: 480px; }
.ls-section__header--center { text-align: center; }
.ls-section__header--center .ls-body { margin: 0 auto; }

/* ── Input ── */
.ls-input {
    display: block; width: 100%;
    padding: var(--ls-space-3) var(--ls-space-4);
    font-size: .9375rem; line-height: 1.5;
    color: var(--ls-text-primary);
    background: var(--ls-surface);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius-md);
    transition: border-color var(--ls-duration-fast), box-shadow var(--ls-duration-fast);
    outline: none;
}
.ls-input:focus { border-color: var(--ls-primary); box-shadow: 0 0 0 3px var(--ls-primary-subtle); }
.ls-input::placeholder { color: var(--ls-text-tertiary); }

/* ── Badge / Tag ── */
.ls-badge {
    display: inline-flex; align-items: center;
    padding: 2px 10px;
    font-size: .6875rem; font-weight: 600;
    border-radius: var(--ls-radius-full);
    background: var(--ls-primary-subtle);
    color: var(--ls-primary);
}

/* ── Animations ── */
@keyframes ls-fade-up { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
@keyframes ls-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes ls-scale-in { from { opacity: 0; transform: scale(.95); } to { opacity: 1; transform: none; } }
.ls-animate { animation: ls-fade-up .6s var(--ls-ease) both; }
.ls-animate--delay-1 { animation-delay: .1s; }
.ls-animate--delay-2 { animation-delay: .2s; }
.ls-animate--delay-3 { animation-delay: .3s; }

/* ── Intersection Observer reveals ── */
.ls-reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ls-ease), transform .6s var(--ls-ease); }
.ls-reveal.is-visible { opacity: 1; transform: none; }

/* ── Grid utilities ── */
.ls-grid { display: grid; gap: var(--ls-space-5); }
.ls-grid--2 { grid-template-columns: repeat(2, 1fr); }
.ls-grid--3 { grid-template-columns: repeat(3, 1fr); }
.ls-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 768px) { .ls-grid--3, .ls-grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .ls-grid--2, .ls-grid--3, .ls-grid--4 { grid-template-columns: 1fr; } }

/* ── Skeleton Loading ── */
.ls-skeleton { background: linear-gradient(90deg, var(--ls-canvas) 25%, var(--ls-border) 50%, var(--ls-canvas) 75%); background-size: 200% 100%; animation: ls-shimmer 1.5s infinite; border-radius: var(--ls-radius-sm); }
@keyframes ls-shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }