/* ═══════════════════════════════════════════════════════════════════════════
   ONENESS DESIGN SYSTEM
   Premium • Minimal • Sophisticated
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────────────────
   CSS VARIABLES
   ───────────────────────────────────────────────────────────────────────────── */
:root {
    /* Colors — Dark Theme (Optimal Contrast) */
    --void: #000000;
    --deep: #050505;
    --subtle: #0a0a0a;
    --elevated: #0f0f0f;
    --line: #1a1a1a;
    --border: #222222;
    
    --text-dim: #4a4a4a;
    --text-muted: #757575;
    --text-secondary: #a8a8a8;
    --text-primary: #d0d0d0;
    --text-bright: #e8e8e8;
    
    --gold: #c9a227;
    --gold-soft: rgba(201, 162, 39, 0.7);
    --gold-dim: rgba(201, 162, 39, 0.25);
    --gold-pale: rgba(201, 162, 39, 0.08);
    --gold-glow: rgba(201, 162, 39, 0.15);
    
    /* Typography — Perfect Fourth Scale */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px - minimum */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.333rem;     /* ~21px */
    --text-2xl: 1.777rem;    /* ~28px */
    --text-3xl: 2.369rem;    /* ~38px */
    --text-4xl: 3.157rem;    /* ~50px */
    
    --weight-light: 300;
    --weight-normal: 400;
    --weight-medium: 500;
    
    --leading-tight: 1.25;
    --leading-normal: 1.6;
    --leading-relaxed: 1.75;
    
    --tracking-tight: -0.01em;
    --tracking-normal: 0;
    --tracking-wide: 0.08em;
    --tracking-wider: 0.15em;
    --tracking-widest: 0.25em;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Animation */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 600ms;
    --duration-slower: 1000ms;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-normal);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--void);
    min-height: 100vh;
}

::selection {
    background: var(--gold-dim);
    color: var(--text-bright);
}

/* ─────────────────────────────────────────────────────────────────────────────
   ANIMATIONS
   ───────────────────────────────────────────────────────────────────────────── */

/* Fade in from below */
@keyframes emerge {
    from { 
        opacity: 0; 
        transform: translateY(20px);
    }
    to { 
        opacity: 1; 
        transform: translateY(0);
    }
}

/* Gentle float */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* Subtle pulse glow */
@keyframes breathe {
    0%, 100% { 
        opacity: 0.6;
        filter: brightness(1);
    }
    50% { 
        opacity: 0.9;
        filter: brightness(1.1);
    }
}

/* Horizontal line expand */
@keyframes expandLine {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

/* Subtle background shift */
@keyframes ambientShift {
    0%, 100% { 
        background-position: 50% 40%;
        opacity: 1;
    }
    50% { 
        background-position: 50% 45%;
        opacity: 0.8;
    }
}

/* Particle drift */
@keyframes drift {
    0%, 100% { 
        transform: translate(0, 0) rotate(0deg);
    }
    25% { 
        transform: translate(10px, -10px) rotate(1deg);
    }
    50% { 
        transform: translate(-5px, 5px) rotate(-1deg);
    }
    75% { 
        transform: translate(-10px, -5px) rotate(0.5deg);
    }
}

/* ─────────────────────────────────────────────────────────────────────────────
   LAYOUT COMPONENTS
   ───────────────────────────────────────────────────────────────────────────── */

.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-centered {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: var(--space-xl);
    position: relative;
    overflow: hidden;
}

.container {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* ─────────────────────────────────────────────────────────────────────────────
   AMBIENT BACKGROUND
   ───────────────────────────────────────────────────────────────────────────── */

.ambient {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
}

.ambient::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    right: -50%;
    bottom: -50%;
    background: 
        radial-gradient(ellipse 40% 30% at 50% 30%, var(--gold-pale) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 30% 70%, rgba(201, 162, 39, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse 50% 35% at 70% 60%, rgba(201, 162, 39, 0.02) 0%, transparent 50%);
    animation: ambientShift 20s ease-in-out infinite;
}

/* Subtle noise texture overlay */
.ambient::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.015;
    mix-blend-mode: overlay;
}

/* ─────────────────────────────────────────────────────────────────────────────
   LOGO
   ───────────────────────────────────────────────────────────────────────────── */

.logo {
    display: block;
    width: 80px;
    height: auto;
    opacity: 0;
    animation: 
        emerge 2s var(--ease-out-expo) 0.2s forwards,
        breathe 8s ease-in-out 2.2s infinite;
    filter: drop-shadow(0 0 20px var(--gold-glow));
}

.logo-sm {
    width: 50px;
}

.logo-lg {
    width: 100px;
}

/* ─────────────────────────────────────────────────────────────────────────────
   TYPOGRAPHY
   ───────────────────────────────────────────────────────────────────────────── */

.heading-display {
    font-family: var(--font-display);
    font-size: clamp(var(--text-2xl), 5vw, var(--text-3xl));
    font-weight: var(--weight-light);
    letter-spacing: var(--tracking-widest);
    color: var(--text-bright);
    line-height: var(--leading-tight);
}

.heading-1 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--weight-light);
    letter-spacing: var(--tracking-wider);
    color: var(--text-bright);
    line-height: var(--leading-tight);
}

.heading-2 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--weight-normal);
    letter-spacing: var(--tracking-wide);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

.text-domain {
    font-size: var(--text-sm);
    letter-spacing: var(--tracking-wider);
    color: var(--text-muted);
}

.text-label {
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    letter-spacing: var(--tracking-widest);
    color: var(--gold);
    text-transform: uppercase;
}

.text-body {
    font-size: var(--text-base);
    font-weight: var(--weight-normal);
    color: var(--text-primary);
    line-height: var(--leading-relaxed);
}

.text-secondary {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.text-muted {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.text-dim {
    font-size: var(--text-xs);
    color: var(--text-dim);
    letter-spacing: var(--tracking-wide);
}

/* ─────────────────────────────────────────────────────────────────────────────
   NAVIGATION
   ───────────────────────────────────────────────────────────────────────────── */

.nav {
    display: flex;
    gap: var(--space-2xl);
    justify-content: center;
}

.nav-item {
    position: relative;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--text-sm);
    letter-spacing: var(--tracking-wide);
    padding: var(--space-sm) 0;
    cursor: pointer;
    transition: color 0.8s var(--ease-out-quart);
}

.nav-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-item:hover {
    color: var(--gold);
}

.nav-item:hover::before {
    transform: scaleX(1);
}

/* Back link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-dim);
    text-decoration: none;
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-wider);
    transition: color 0.8s var(--ease-out-quart);
    margin-top: var(--space-lg);
}

.back-link::before {
    content: '←';
    transition: transform 0.8s var(--ease-out-expo);
}

.back-link:hover {
    color: var(--gold);
}

.back-link:hover::before {
    transform: translateX(-4px);
}

/* ─────────────────────────────────────────────────────────────────────────────
   CARDS & SURFACES
   ───────────────────────────────────────────────────────────────────────────── */

.card {
    background: var(--deep);
    border: 1px solid var(--line);
    padding: var(--space-lg);
    transition: all 0.8s var(--ease-out-quart);
}

.card:hover {
    border-color: var(--border);
    background: var(--subtle);
}

.card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.card-title {
    font-size: var(--text-base);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    transition: color 0.8s var(--ease-out-quart);
}

.card-link:hover .card-title {
    color: var(--gold);
}

.card-meta {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* ─────────────────────────────────────────────────────────────────────────────
   STATUS BADGES
   ───────────────────────────────────────────────────────────────────────────── */

.badge {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    padding: 0.15rem 0.5rem;
    letter-spacing: var(--tracking-normal);
    border-radius: 2px;
}

.badge-ready {
    background: rgba(39, 201, 89, 0.12);
    color: #5ab87a;
}

.badge-draft {
    background: var(--gold-dim);
    color: var(--gold);
}

.badge-pending {
    background: rgba(201, 89, 89, 0.12);
    color: #c97a7a;
}

/* ─────────────────────────────────────────────────────────────────────────────
   CODE BLOCKS
   ───────────────────────────────────────────────────────────────────────────── */

.code-block {
    background: var(--subtle);
    border: 1px solid var(--line);
    padding: var(--space-lg);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--text-secondary);
}

code {
    font-family: var(--font-body);
    font-size: 0.9em;
    background: var(--subtle);
    padding: 0.1em 0.3em;
    border-radius: 2px;
}

/* ─────────────────────────────────────────────────────────────────────────────
   BUTTONS
   ───────────────────────────────────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    letter-spacing: var(--tracking-wide);
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--line);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out-quart);
}

.btn:hover {
    color: var(--gold);
    border-color: var(--gold-dim);
}

.btn:active {
    transform: scale(0.98);
}

/* ─────────────────────────────────────────────────────────────────────────────
   INPUTS
   ───────────────────────────────────────────────────────────────────────────── */

.input {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--void);
    border: 1px solid var(--line);
    outline: none;
    transition: border-color var(--duration-normal) var(--ease-out-quart);
}

.input:focus {
    border-color: var(--gold-soft);
}

.input::placeholder {
    color: var(--text-dim);
}

/* ─────────────────────────────────────────────────────────────────────────────
   MODAL
   ───────────────────────────────────────────────────────────────────────────── */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-slow) var(--ease-out-expo);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--deep);
    border: 1px solid var(--line);
    padding: var(--space-3xl);
    max-width: 380px;
    width: 90%;
    text-align: center;
    transform: translateY(20px);
    transition: transform var(--duration-slow) var(--ease-out-expo);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-close {
    position: fixed;
    top: var(--space-xl);
    right: var(--space-xl);
    color: var(--text-dim);
    font-size: var(--text-xl);
    cursor: pointer;
    transition: color var(--duration-fast);
    z-index: 1001;
}

.modal-close:hover {
    color: var(--text-secondary);
}

/* ─────────────────────────────────────────────────────────────────────────────
   DIVIDERS
   ───────────────────────────────────────────────────────────────────────────── */

.divider {
    width: 100%;
    height: 1px;
    background: var(--line);
    margin: var(--space-2xl) 0;
}

.divider-vertical {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--gold-dim), transparent);
}

/* ─────────────────────────────────────────────────────────────────────────────
   SECTIONS
   ───────────────────────────────────────────────────────────────────────────── */

.section {
    margin-bottom: var(--space-3xl);
}

.section-header {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--line);
}

/* ─────────────────────────────────────────────────────────────────────────────
   STAGGERED ANIMATIONS
   ───────────────────────────────────────────────────────────────────────────── */

/* Standard stagger - for content pages */
.stagger { opacity: 0; animation: emerge 1.8s var(--ease-out-expo) forwards; }
.stagger-1 { animation-delay: 0.2s; }
.stagger-2 { animation-delay: 0.4s; }
.stagger-3 { animation-delay: 0.6s; }
.stagger-4 { animation-delay: 0.8s; }
.stagger-5 { animation-delay: 1.0s; }
.stagger-6 { animation-delay: 1.2s; }
.stagger-7 { animation-delay: 1.4s; }
.stagger-8 { animation-delay: 1.6s; }

/* Luxury stagger - for hero/landing pages (harmonic chord timing) */
.luxury { opacity: 0; animation: emerge 2.5s var(--ease-out-expo) forwards; }
.luxury-1 { animation-delay: 0.3s; }
.luxury-2 { animation-delay: 1.0s; }
.luxury-3 { animation-delay: 1.8s; }
.luxury-4 { animation-delay: 2.6s; }
.luxury-5 { animation-delay: 3.4s; }
.luxury-6 { animation-delay: 4.2s; }

/* ─────────────────────────────────────────────────────────────────────────────
   FOOTER
   ───────────────────────────────────────────────────────────────────────────── */

.footer {
    text-align: center;
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--line);
    margin-top: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-fixed {
    position: fixed;
    bottom: var(--space-xl);
    left: 0;
    right: 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ─────────────────────────────────────────────────────────────────────────────
   RESPONSIVE
   ───────────────────────────────────────────────────────────────────────────── */

@media (max-width: 600px) {
    :root {
        --text-base: 0.9375rem;
    }
    
    .page-centered {
        padding: var(--space-lg);
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .nav {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .heading-display {
        letter-spacing: var(--tracking-wider);
    }
    
    .modal {
        padding: var(--space-xl);
        width: 92%;
    }
    
    /* Stack buttons on mobile */
    .btn-group {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-group .btn {
        width: 100%;
    }
}

/* Additional mobile breakpoint for very small screens */
@media (max-width: 400px) {
    :root {
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
        --space-3xl: 2.5rem;
    }
}

/* ─────────────────────────────────────────────────────────────────────────────
   UTILITIES
   ───────────────────────────────────────────────────────────────────────────── */

.text-center { text-align: center; }
.text-gold { color: var(--gold); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }