/* concepts.news - Memphis Design x Candlelit Newsroom */

/* ========== CSS CUSTOM PROPERTIES ========== */
:root {
    --warm-charcoal: #2d2a2e;
    --parchment-cream: #f5ede0;
    --burnt-terracotta: #c2573a;
    --candle-amber: #e8a832;
    --dusty-coral: #d4796a;
    --deep-teal: #2a6e6e;
    --memphis-pink: #e8a0b4;
    --dark-warm: #3d3335;
    --bubble-ivory: rgba(245, 237, 224, 0.15);
    --grid-gap: clamp(12px, 2vw, 24px);
    --bezier-draw: cubic-bezier(0.22, 1, 0.36, 1);
    --bezier-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(0.95rem, 1.6vw, 1.15rem);
    line-height: 1.65;
    letter-spacing: 0.005em;
    color: var(--parchment-cream);
    background: radial-gradient(ellipse at 30% 70%, var(--dark-warm) 0%, var(--warm-charcoal) 60%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ========== BUBBLE CANVAS ========== */
#bubble-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ========== CANDLE GLOW ========== */
.candle-glow {
    position: fixed;
    bottom: 20%;
    left: 25%;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    box-shadow: 0 0 80px 40px rgba(232, 168, 50, 0.04);
    animation: candle-flicker 4s ease-in-out infinite alternate;
    z-index: 0;
    pointer-events: none;
}

@keyframes candle-flicker {
    0% { opacity: 0.6; transform: scale(1); }
    33% { opacity: 0.8; transform: scale(1.05); }
    66% { opacity: 0.5; transform: scale(0.97); }
    100% { opacity: 0.9; transform: scale(1.02); }
}

/* ========== HERO SECTION ========== */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 60px clamp(20px, 5vw, 80px);
    text-align: center;
}

.hero-headline {
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: clamp(3rem, 8vw, 7rem);
    line-height: 1.15;
    letter-spacing: 0.01em;
    color: var(--parchment-cream);
    position: relative;
    display: inline-block;
    margin: 30px 0;
}

.hero-headline::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--candle-amber);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.8s var(--bezier-draw);
}

.hero-headline.visible::after {
    transform: scaleX(1);
}

.hero-subtitle {
    font-family: 'DM Sans', sans-serif;
    font-weight: 500;
    font-size: 1.2rem;
    color: var(--dusty-coral);
    max-width: 600px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    transition-delay: 0.8s;
}

.hero-subtitle.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== SQUIGGLES ========== */
.squiggle {
    width: min(90%, 800px);
    height: 40px;
    overflow: visible;
}

.squiggle-path {
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
    transition: stroke-dashoffset 1.5s ease;
}

.squiggle-path.drawn {
    stroke-dashoffset: 0;
}

/* ========== CONCEPT GRID ========== */
.concept-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--grid-gap);
    padding: 0 var(--grid-gap) 120px;
    max-width: 1400px;
    margin: 0 auto;
}

/* ========== CARD SIZES ========== */
.card-wide {
    grid-column: span 7;
    grid-row: span 1;
}

.card-tall {
    grid-column: span 3;
    grid-row: span 2;
}

.card-square {
    grid-column: span 4;
    grid-row: span 1;
}

.card-medium {
    grid-column: span 5;
    grid-row: span 1;
}

.card-small {
    grid-column: span 3;
    grid-row: span 1;
}

/* ========== BREATHING STRIPS ========== */
.breathing-strip {
    grid-column: 1 / -1;
    height: 80px;
    overflow: hidden;
    mix-blend-mode: soft-light;
    border-radius: 4px;
}

.terrazzo-pattern {
    width: 200%;
    height: 100%;
    background-image:
        radial-gradient(ellipse 8px 6px at 10% 30%, var(--candle-amber) 100%, transparent 100%),
        radial-gradient(circle 4px at 25% 70%, var(--memphis-pink) 100%, transparent 100%),
        radial-gradient(ellipse 6px 10px at 40% 20%, var(--dusty-coral) 100%, transparent 100%),
        radial-gradient(circle 3px at 55% 80%, var(--deep-teal) 100%, transparent 100%),
        radial-gradient(ellipse 10px 5px at 70% 40%, var(--burnt-terracotta) 100%, transparent 100%),
        radial-gradient(circle 5px at 85% 60%, var(--parchment-cream) 100%, transparent 100%),
        radial-gradient(ellipse 7px 4px at 15% 85%, var(--candle-amber) 100%, transparent 100%),
        radial-gradient(circle 6px at 30% 45%, var(--memphis-pink) 100%, transparent 100%),
        radial-gradient(ellipse 4px 8px at 50% 15%, var(--dusty-coral) 100%, transparent 100%),
        radial-gradient(circle 7px at 65% 75%, var(--deep-teal) 100%, transparent 100%),
        radial-gradient(ellipse 5px 6px at 80% 25%, var(--burnt-terracotta) 100%, transparent 100%),
        radial-gradient(circle 4px at 95% 55%, var(--parchment-cream) 100%, transparent 100%);
    background-size: 50% 100%;
    background-repeat: repeat-x;
    animation: terrazzo-scroll 60s linear infinite;
}

@keyframes terrazzo-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.breathing-strip[data-strip="2"] .terrazzo-pattern {
    animation-delay: -20s;
}

.breathing-strip[data-strip="3"] .terrazzo-pattern {
    animation-delay: -40s;
}

/* ========== CONCEPT CARDS ========== */
.concept-card {
    position: relative;
    background: var(--parchment-cream);
    color: var(--warm-charcoal);
    padding: 0;
    border-radius: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: all 0.7s var(--bezier-bounce);
}

.concept-card.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Offset border effect */
.concept-card::before {
    content: '';
    position: absolute;
    top: 4px;
    left: 4px;
    right: -2px;
    bottom: -2px;
    border: 2px solid var(--dusty-coral);
    z-index: -1;
    transition: all 0.3s var(--bezier-draw);
}

.concept-card:hover::before {
    top: 6px;
    left: 6px;
    right: -4px;
    bottom: -4px;
    border-color: var(--candle-amber);
}

.concept-card:hover {
    box-shadow: 0 4px 30px rgba(232, 168, 50, 0.12);
}

/* ========== CARD HEADER ========== */
.card-header {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    min-height: 44px;
}

.card-squiggle {
    width: 80px;
    height: 20px;
}

.card-circle-line {
    width: 50px;
    height: 30px;
}

/* ========== CARD CONTENT ========== */
.card-headline {
    font-family: 'Libre Baskerville', serif;
    font-weight: 700;
    font-size: clamp(1.1rem, 2.5vw, 1.6rem);
    line-height: 1.25;
    letter-spacing: 0.01em;
    color: var(--warm-charcoal);
    padding: 16px 20px 8px;
    position: relative;
    display: inline-block;
}

/* Underline draw for card headlines */
.headline::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 20px;
    width: calc(100% - 40px);
    height: 3px;
    background: var(--candle-amber);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s var(--bezier-draw);
}

.concept-card .headline.visible::after,
.concept-card:hover .headline::after {
    transform: scaleX(1);
}

/* Override for hero headline */
.hero-headline::after {
    left: 0;
    width: 100%;
    height: 5px;
    bottom: -8px;
}

.card-excerpt {
    font-family: 'DM Sans', sans-serif;
    font-weight: 500;
    font-size: clamp(0.85rem, 1.4vw, 1rem);
    line-height: 1.6;
    color: var(--warm-charcoal);
    padding: 0 20px 16px;
    opacity: 0.85;
}

/* ========== CARD TAGS ========== */
.card-tag {
    display: inline-block;
    font-family: 'Space Mono', monospace;
    font-weight: 400;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--dusty-coral);
    padding: 4px 12px;
    margin: 0 20px 16px;
    border: 2px solid var(--dusty-coral);
    border-radius: 20px;
    transition: all 0.3s var(--bezier-draw);
}

.concept-card:hover .card-tag {
    color: var(--candle-amber);
    border-color: var(--candle-amber);
}

/* ========== CARD TRIANGLE ACCENTS ========== */
.card-triangle {
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    border-left: 40px solid transparent;
    border-top: 40px solid var(--memphis-pink);
    transition: transform 0.3s var(--bezier-draw);
    opacity: 0;
}

.concept-card.visible .card-triangle {
    opacity: 1;
    transition-delay: 0.2s;
}

.concept-card:hover .card-triangle {
    transform: rotate(15deg);
}

/* ========== CARD DECORATIVE SVG ANIMATIONS ========== */
.concept-card .card-squiggle,
.concept-card .card-circle-line {
    opacity: 0;
    transition: opacity 0.4s ease 0.2s;
}

.concept-card.visible .card-squiggle,
.concept-card.visible .card-circle-line {
    opacity: 1;
}

/* ========== FLAME OUT ZONE ========== */
.flame-out {
    transition: all 0.7s var(--bezier-bounce);
}

.flame-out[data-fade="0.85"] {
    --card-opacity: 0.85;
}

.flame-out[data-fade="0.65"] {
    --card-opacity: 0.65;
}

.flame-out[data-fade="0.4"] {
    --card-opacity: 0.4;
}

.flame-out.visible {
    opacity: var(--card-opacity, 1);
    transform: translateY(0) scale(calc(0.85 + var(--card-opacity, 1) * 0.15));
}

/* ========== WARM BORDER DISTANCE EFFECT ========== */
.concept-card.near-light::before {
    border-color: var(--candle-amber);
}

/* ========== MOBILE: TABLET ========== */
@media (max-width: 768px) {
    .concept-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .card-wide { grid-column: span 4; }
    .card-tall { grid-column: span 2; grid-row: span 2; }
    .card-square { grid-column: span 2; }
    .card-medium { grid-column: span 2; }
    .card-small { grid-column: span 2; }

    .hero-headline {
        font-size: clamp(2.2rem, 6vw, 4rem);
    }

    .card-triangle {
        border-left-width: 24px;
        border-top-width: 24px;
    }

    .card-squiggle { width: 50px; }
    .card-circle-line { width: 35px; }
}

/* ========== MOBILE: PHONE ========== */
@media (max-width: 480px) {
    .concept-grid {
        grid-template-columns: 1fr;
    }
    .card-wide,
    .card-tall,
    .card-square,
    .card-medium,
    .card-small {
        grid-column: span 1;
        grid-row: span 1;
    }

    .hero-headline {
        font-size: clamp(1.8rem, 7vw, 3rem);
    }

    .hero {
        padding: 40px 20px;
    }

    .breathing-strip {
        height: 50px;
    }
}