/* concepts.news - Crystalline Terrarium Fairycore */

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

:root {
    --void: #1A1A1E;
    --surface: #252530;
    --amethyst: #C9B8DB;
    --frost: #A8C8E8;
    --honey: #E8D5A0;
    --parchment: #F0EDE8;
    --lavender-gray: #8B7FA0;
    --rose-quartz: #E8B8C0;
}

body {
    background-color: var(--void);
    color: var(--parchment);
    font-family: 'Source Serif 4', serif;
    font-weight: 400;
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    line-height: 1.85;
    overflow-x: hidden;
}

/* ============================
   GRAIN OVERLAY
   ============================ */

.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.04;
    mix-blend-mode: soft-light;
    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");
    background-size: 200px 200px;
}

/* ============================
   FLOATING CONCEPT SEEDS
   ============================ */

.concept-seed {
    position: fixed;
    border-radius: 50%;
    background-color: var(--amethyst);
    opacity: 0.2;
    pointer-events: none;
    z-index: 0;
}

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

#nav-bar {
    position: sticky;
    top: 24px;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 24px;
    max-width: 1200px;
    margin: 0 auto;
    height: 48px;
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
}

#nav-bar.scrolled {
    background-color: rgba(26, 26, 30, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 8px;
}

.nav-crystal {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-link {
    font-family: 'Manrope', sans-serif;
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--lavender-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* ============================
   CRYSTAL FIELD HERO
   ============================ */

#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    padding: 15vh 10% 0;
    overflow: hidden;
}

#crystal-field {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.crystal-shape {
    position: absolute;
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform: scale(0);
}

.crystal-shape.visible {
    opacity: 1;
    transform: scale(1) rotate(var(--rotate));
}

.crystal-shape:hover {
    transform: scale(1) rotate(var(--rotate)) perspective(800px) rotateX(5deg) rotateY(5deg);
}

.hero-text {
    position: relative;
    z-index: 1;
}

#hero-title {
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    font-size: clamp(2rem, 5vw, 4.5rem);
    letter-spacing: 0.2em;
    color: var(--parchment);
    opacity: 0;
    transition: opacity 0.5s ease;
}

#hero-title.visible {
    opacity: 1;
}

.hero-subtitle {
    font-family: 'Manrope', sans-serif;
    font-weight: 300;
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--lavender-gray);
    margin-top: 16px;
    max-width: 40ch;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.hero-subtitle.visible {
    opacity: 1;
}

/* ============================
   PRISMATIC BAND
   ============================ */

.prismatic-band {
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--amethyst), var(--frost), var(--honey), var(--rose-quartz), var(--amethyst));
    background-size: 200% 100%;
    animation: prismaticFlow 12s linear infinite;
    opacity: 0.3;
}

@keyframes prismaticFlow {
    from { background-position: 0% 50%; }
    to { background-position: 200% 50%; }
}

/* ============================
   ASYMMETRIC NEWS GRID
   ============================ */

#news-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 60px auto;
    padding: 0 24px;
}

.article-card {
    background-color: var(--surface);
    padding: 32px;
    border-left: 1px solid;
    transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
    opacity: 0;
    filter: blur(3px);
    transform: translateY(20px);
    transition: opacity 0.4s ease, filter 0.4s ease, transform 0.4s ease;
}

.article-card.visible {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
}

.article-card:hover {
    transform: perspective(800px) rotateX(2deg) rotateY(-3deg);
}

.article-card[data-category="amethyst"] { border-left-color: var(--amethyst); }
.article-card[data-category="frost"] { border-left-color: var(--frost); }
.article-card[data-category="honey"] { border-left-color: var(--honey); }
.article-card[data-category="rose"] { border-left-color: var(--rose-quartz); }

.span-wide { grid-column: span 7; }
.span-medium { grid-column: span 5; }
.span-narrow { grid-column: span 5; }

/* Fibonacci-inspired spacing */
.article-card:nth-child(1) { grid-column: 1 / 8; }
.article-card:nth-child(2) { grid-column: 9 / 13; }
.article-card:nth-child(3) { grid-column: 2 / 8; }
.article-card:nth-child(4) { grid-column: 9 / 13; }
.article-card:nth-child(5) { grid-column: 1 / 8; }
.article-card:nth-child(6) { grid-column: 8 / 13; }

.article-meta {
    font-family: 'Manrope', sans-serif;
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--lavender-gray);
    display: block;
    margin-bottom: 12px;
}

.article-title {
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    color: var(--parchment);
    margin-bottom: 12px;
    line-height: 1.3;
}

.article-body {
    font-family: 'Source Serif 4', serif;
    font-weight: 400;
    font-size: clamp(0.9rem, 1.1vw, 1rem);
    color: var(--parchment);
    line-height: 1.85;
}

/* ============================
   CRYSTAL DIVIDER
   ============================ */

.crystal-divider {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 24px;
}

.crystal-divider svg {
    width: 100%;
    height: 40px;
}

/* ============================
   FOOTER
   ============================ */

#site-footer {
    padding: 48px 24px;
    text-align: center;
}

.footer-text {
    font-family: 'Manrope', sans-serif;
    font-weight: 300;
    font-size: 0.9rem;
    color: var(--lavender-gray);
}

/* ============================
   RESPONSIVE
   ============================ */

@media (max-width: 768px) {
    #news-grid {
        grid-template-columns: 1fr;
    }

    .article-card:nth-child(n) {
        grid-column: 1 / -1;
    }

    #hero {
        padding: 20vh 24px 0;
    }
}