/* ============================================
   HOLOS.DEV - STYLES
   Swiss Rationalism + Energetic Futurism
   ============================================ */

/* CSS Custom Properties - Triadic Palette */
:root {
    --color-coral: #E8624A;
    --color-cerulean: #2B6B8A;
    --color-gold: #D4A843;
    --color-bg-marble-light: #F5F0EA;
    --color-surface-marble-mid: #E8E0D4;
    --color-border-stone: #C0B9A8;
    --color-text-primary: #2A2622;
    --color-text-secondary: #6B6560;
    --color-dark-terminal: #2A2622;
    --color-dark-veining: #3A3632;

    --spacing-baseline: 4px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    --spacing-xxxl: 96px;

    --gutter-width: 24px;
    --grid-columns: 12;

    --font-display: "Playfair Display", serif;
    --font-body: "DM Sans", sans-serif;
    --font-mono: "DM Mono", monospace;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-marble-light);
    color: var(--color-text-primary);
    font-size: clamp(0.9rem, 1.1vw, 1.125rem);
    line-height: 1.65;
    letter-spacing: 0.005em;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

h1 {
    font-size: clamp(2.5rem, 6vw, 5.5rem);
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2.75rem);
}

h3 {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    margin-bottom: var(--spacing-md);
}

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

code {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    letter-spacing: 0.04em;
    color: var(--color-text-secondary);
    background-color: rgba(0, 0, 0, 0.02);
    padding: 2px 4px;
    border-radius: 2px;
}

a {
    color: var(--color-cerulean);
    text-decoration: none;
    transition: color 200ms ease-out;
}

a:hover {
    color: var(--color-coral);
}

/* ============================================
   MARBLE TEXTURE (CSS-Generated)
   ============================================ */

.page-container {
    position: relative;
    background:
        radial-gradient(ellipse 400px 300px at 25% 30%, rgba(192, 185, 168, 0.06) 0%, transparent 70%),
        radial-gradient(ellipse 600px 400px at 70% 60%, rgba(192, 185, 168, 0.04) 0%, transparent 70%),
        radial-gradient(ellipse 500px 350px at 45% 80%, rgba(192, 185, 168, 0.05) 0%, transparent 70%),
        var(--color-bg-marble-light);
    background-attachment: fixed;
}

/* ============================================
   NAVIGATION STRIP
   ============================================ */

.nav-strip {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    background-color: var(--color-bg-marble-light);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-lg);
    gap: var(--spacing-md);
    z-index: 100;
    border-bottom: 1px solid rgba(192, 185, 168, 0.1);
}

.nav-link {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-secondary);
    text-decoration: none;
    position: relative;
    padding: 4px 8px;
    transition: color 200ms ease-out;
}

.nav-link:hover {
    color: var(--color-coral);
}

.nav-link.active {
    color: var(--color-coral);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-coral);
    animation: underline-draw 600ms ease-out forwards;
}

.nav-divider {
    width: 1px;
    height: 16px;
    background-color: rgba(192, 185, 168, 0.25);
}

/* ============================================
   DATUM BAR (Golden Ratio Anchor)
   ============================================ */

.datum-bar {
    position: fixed;
    top: 61.8vh;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right,
        rgba(192, 185, 168, 0.5) 0%,
        rgba(232, 98, 74, 0.3) 50%,
        rgba(232, 224, 212, 0.1) 100%);
    z-index: 50;
    animation: datum-pulse 4s ease-in-out infinite;
}

@keyframes datum-pulse {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.4; }
}

/* ============================================
   OPENING FRAME (100vh)
   ============================================ */

.opening-frame {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px var(--spacing-lg);
    margin-top: 48px;
}

.opening-content {
    text-align: center;
    max-width: 600px;
}

.opening-title {
    font-size: clamp(5rem, 12vw, 10rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    animation: title-fade-in 800ms ease-out forwards;
}

.opening-descriptor {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    font-family: var(--font-body);
    font-weight: 400;
}

.triadic-dots {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: dots-fade-in 600ms ease-out 1000ms forwards;
    opacity: 0;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    animation: dot-scale 400ms ease-out forwards;
}

.dot.coral {
    background-color: var(--color-coral);
    animation-delay: 150ms;
}

.dot.cerulean {
    background-color: var(--color-cerulean);
    animation-delay: 300ms;
}

.dot.gold {
    background-color: var(--color-gold);
    animation-delay: 450ms;
}

@keyframes title-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes dots-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes dot-scale {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

/* ============================================
   CARD GRID LAYOUT
   ============================================ */

.card-grid-section {
    min-height: 85vh;
    padding: var(--spacing-xxl) var(--spacing-lg);
    position: relative;
}

.section-title {
    grid-column: 1 / span 3;
    margin-bottom: var(--spacing-xl);
    text-transform: uppercase;
    font-size: clamp(1.5rem, 3vw, 2.75rem);
    letter-spacing: -0.02em;
}

.coordinate-label {
    position: absolute;
    left: -80px;
    top: var(--spacing-xl);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    letter-spacing: 0.04em;
    color: rgba(192, 185, 168, 0.5);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter-width);
    margin-bottom: var(--spacing-xxl);
}

/* ============================================
   CARD COMPONENT
   ============================================ */

.card {
    background:
        radial-gradient(ellipse 300px 250px at 20% 30%, rgba(192, 185, 168, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 400px 300px at 80% 70%, rgba(192, 185, 168, 0.06) 0%, transparent 60%),
        var(--color-surface-marble-mid);
    border: 1px solid rgba(192, 185, 168, 0.4);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    border-radius: 2px;
    transform: scale(0.97);
    opacity: 0;
}

.card.visible {
    animation: card-pulse-in 400ms ease-out forwards;
}

@keyframes card-pulse-in {
    from {
        transform: scale(0.97);
        border-opacity: 0;
        opacity: 0;
    }
    to {
        transform: scale(1);
        border-opacity: 1;
        opacity: 1;
    }
}

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

.card-span-3 {
    grid-column: span 3;
}

.card-span-4 {
    grid-column: span 4;
}

.card-span-6 {
    grid-column: span 6;
}

/* Card Accent Borders (Triadic Assignment) */
.card-accent-1:hover {
    border-color: var(--color-coral);
    animation: border-pulse-coral 2.4s ease-in-out infinite;
}

.card-accent-2:hover {
    border-color: var(--color-cerulean);
    animation: border-pulse-cerulean 2.4s ease-in-out infinite;
}

.card-accent-3:hover {
    border-color: var(--color-gold);
    animation: border-pulse-gold 2.4s ease-in-out infinite;
}

@keyframes border-pulse-coral {
    0%, 100% { border-color: var(--color-coral); }
    33% { border-color: var(--color-cerulean); }
    66% { border-color: var(--color-gold); }
}

@keyframes border-pulse-cerulean {
    0%, 100% { border-color: var(--color-cerulean); }
    33% { border-color: var(--color-gold); }
    66% { border-color: var(--color-coral); }
}

@keyframes border-pulse-gold {
    0%, 100% { border-color: var(--color-gold); }
    33% { border-color: var(--color-coral); }
    66% { border-color: var(--color-cerulean); }
}

/* Card Title & Text */
.card h3 {
    margin-bottom: var(--spacing-md);
}

.card p {
    font-size: clamp(0.85rem, 1vw, 1rem);
    line-height: 1.6;
    margin-bottom: 0;
}

/* Triadic Indicator Dots */
.triadic-indicator {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 24px;
    height: 24px;
    opacity: 0.7;
}

.dot-coral {
    fill: var(--color-coral);
}

.dot-cerulean {
    fill: var(--color-cerulean);
}

.dot-gold {
    fill: var(--color-gold);
}

.card:hover .dot-coral {
    animation: dot-pulse 300ms ease-out infinite;
}

.card:hover .dot-cerulean {
    animation: dot-pulse 300ms ease-out 100ms infinite;
}

.card:hover .dot-gold {
    animation: dot-pulse 300ms ease-out 200ms infinite;
}

@keyframes dot-pulse {
    0%, 100% { r: 4px; }
    50% { r: 5.2px; }
}

/* ============================================
   INTERSTITIAL STATEMENTS
   ============================================ */

.interstitial-statement {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    position: relative;
}

.interstitial-statement h2 {
    text-align: center;
    max-width: 800px;
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    color: var(--color-coral);
    letter-spacing: -0.02em;
    position: relative;
}

.interstitial-statement h2::before,
.interstitial-statement h2::after {
    content: '';
    position: absolute;
    height: 1px;
    background-color: rgba(192, 185, 168, 0.3);
    width: 60px;
    top: 50%;
    transform: translateY(-50%);
}

.interstitial-statement h2::before {
    left: -80px;
    transform: translateY(-50%) rotate(-30deg);
    transform-origin: right center;
}

.interstitial-statement h2::after {
    right: -80px;
    transform: translateY(-50%) rotate(30deg);
    transform-origin: left center;
}

/* Alternate colors for interstitials */
.interstitial-statement:nth-of-type(4) h2 {
    color: var(--color-cerulean);
}

.interstitial-statement:nth-of-type(5) h2 {
    color: var(--color-gold);
}

/* ============================================
   TERMINAL FRAME
   ============================================ */

.terminal-frame {
    min-height: 60vh;
    background:
        radial-gradient(ellipse 300px 250px at 20% 30%, rgba(58, 54, 50, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 400px 300px at 80% 70%, rgba(58, 54, 50, 0.06) 0%, transparent 60%),
        var(--color-dark-terminal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--color-bg-marble-light);
}

.terminal-content {
    text-align: center;
    max-width: 600px;
}

.terminal-frame h2 {
    color: var(--color-bg-marble-light);
    margin-bottom: var(--spacing-xl);
    font-size: clamp(1.8rem, 4vw, 3.5rem);
}

.terminal-descriptor {
    color: rgba(245, 240, 234, 0.7);
    font-size: 1rem;
    margin-bottom: var(--spacing-xl);
}

.contact-link {
    color: var(--color-coral);
    position: relative;
    background: linear-gradient(to right, var(--color-coral) 0%, var(--color-coral) 100%) no-repeat;
    background-size: 0% 2px;
    background-position: left bottom;
    transition: background-size 600ms ease-out;
    padding-bottom: 2px;
}

.contact-link:hover {
    background-size: 100% 2px;
    color: var(--color-coral);
}

.terminal-frame .triadic-dots {
    animation: none;
    opacity: 1;
}

/* ============================================
   PULSE RING EFFECT (SVG Circle)
   ============================================ */

.pulse-ring {
    position: absolute;
    pointer-events: none;
}

/* ============================================
   RESPONSIVE & GRID ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
    .card-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .card-span-3 {
        grid-column: span 3;
    }

    .card-span-4 {
        grid-column: span 6;
    }

    .card-span-6 {
        grid-column: span 6;
    }

    .coordinate-label {
        position: static;
        margin-bottom: var(--spacing-md);
    }

    .nav-strip {
        flex-wrap: wrap;
        height: auto;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }

    body {
        margin-top: 80px;
    }
}

@media (max-width: 480px) {
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .card-span-3 {
        grid-column: span 3;
    }

    .card-span-4 {
        grid-column: span 3;
    }

    .card-span-6 {
        grid-column: span 3;
    }

    .card {
        padding: var(--spacing-md);
    }

    .nav-strip {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .nav-divider {
        display: none;
    }

    .interstitial-statement h2::before,
    .interstitial-statement h2::after {
        display: none;
    }
}

/* ============================================
   SCROLL BEHAVIOR
   ============================================ */

body {
    margin-top: 48px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}