/* ═══════════════════════════════════════════════════════════
   AVIRN HUB — Creative Ecosystem Landing Page
   Obsidian Void + Titanium Silver
   ═══════════════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
    --bg: #000000;
    --s1: #0a0a0a;
    --s2: #111111;
    --s3: #1a1a1a;
    --ti-100: #f5f5f7;
    --ti-200: #d1d1d6;
    --ti-300: #a1a1a6;
    --ti-400: #8e8e93;
    --ti-500: #636366;
    --ti-600: #48484a;
    --ti-700: #3a3a3c;
    --ti-800: #2c2c2e;
    --ti-900: #1c1c1e;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --ease: cubic-bezier(.25, .46, .45, .94);
    --spring: cubic-bezier(.22, 1, .36, 1);
    --smooth: cubic-bezier(.16, 1, .3, 1);
    --max-w: 1100px;
    --px: clamp(20px, 4vw, 40px);
}

html {
    background: var(--bg);
    color: var(--ti-100);
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font);
    line-height: 1.5;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

::selection {
    background: rgba(255, 255, 255, 0.1);
}

/* ═══ Film Grain Noise Overlay ═══ */
.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    pointer-events: none;
    opacity: 0.018;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    background-size: 256px 256px;
}

/* ═══ Ambient Glow ═══ */
.ambient-glow {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.glow-1 {
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(161, 161, 170, 0.04), transparent 70%);
    animation: glowDrift1 20s ease-in-out infinite alternate;
}

.glow-2 {
    bottom: -20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(200, 200, 210, 0.03), transparent 70%);
    animation: glowDrift2 25s ease-in-out infinite alternate;
}

@keyframes glowDrift1 {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(-80px, 60px) scale(1.15);
    }
}

@keyframes glowDrift2 {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(60px, -40px) scale(1.1);
    }
}

/* ═══ Loader ═══ */
.loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity 1s var(--smooth), filter 0.8s;
}

.loader.out {
    opacity: 0;
    filter: blur(30px);
    pointer-events: none;
}

.loader-ring {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--ti-800);
    border-top-color: var(--ti-300);
    animation: spin 0.8s linear infinite;
    transition: opacity 0.4s;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loader-word {
    margin-top: 28px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5em;
    color: var(--ti-600);
    opacity: 0;
    transform: translateY(6px);
    animation: fadeUp 0.6s var(--smooth) 0.3s forwards;
}

@keyframes fadeUp {
    to {
        opacity: 0.6;
        transform: translateY(0);
    }
}

/* ═══ Nav ═══ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 56px;
    display: flex;
    align-items: center;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s;
    opacity: 0;
    transform: translateY(-8px);
    animation: fadeUp 0.6s var(--smooth) 0.8s forwards;
}

.nav.scrolled {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border-bottom-color: var(--border);
}

.nav-inner {
    max-width: var(--max-w);
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--px);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 14px;
    font-weight: 900;
    letter-spacing: 0.15em;
    color: var(--ti-100);
    transition: opacity 0.2s;
}

.nav-logo:hover {
    opacity: 0.7;
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-link {
    font-size: 13px;
    font-weight: 500;
    color: var(--ti-500);
    transition: color 0.2s;
    position: relative;
}

.nav-link:hover {
    color: var(--ti-100);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--ti-300);
    transform: scaleX(0);
    transition: transform 0.3s var(--spring);
    transform-origin: left;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

/* ═══ Hero ═══ */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 var(--px);
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    justify-content: space-between;
    padding: 0 var(--px);
    opacity: 0;
    animation: gridFade 2s ease 0.6s forwards;
}

@keyframes gridFade {
    to {
        opacity: 1;
    }
}

.grid-line {
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, var(--border) 20%, var(--border) 80%, transparent 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    opacity: 0;
    transform: translateY(40px);
    animation: heroReveal 1s var(--smooth) 1.2s forwards;
}

@keyframes heroReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-eyebrow {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--ti-600);
    margin-bottom: 36px;
    display: inline-flex;
    align-items: center;
    gap: 16px;
}

.hero-eyebrow::before,
.hero-eyebrow::after {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--ti-800);
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6.5rem);
    font-weight: 900;
    line-height: 0.95;
    letter-spacing: -0.05em;
    margin-bottom: 28px;
}

.word {
    display: inline-block;
    background: linear-gradient(180deg, #FFF 0%, #F4F4F5 25%, #D4D4D8 55%, #A1A1AA 85%, #8E8E93 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    transform: translateY(20px);
    animation: wordIn 0.7s var(--smooth) forwards;
    animation-delay: calc(1.2s + var(--d));
}

@keyframes wordIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-sub {
    font-size: clamp(0.9rem, 1.4vw, 1.05rem);
    color: var(--ti-400);
    max-width: 480px;
    margin: 0 auto 40px;
    line-height: 1.7;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Scroll Indicator */
.scroll-hint {
    margin-top: 64px;
    display: flex;
    justify-content: center;
}

.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--ti-700), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {

    0%,
    100% {
        opacity: 0.3;
        transform: scaleY(0.6);
    }

    50% {
        opacity: 0.8;
        transform: scaleY(1);
    }
}

/* ═══ Buttons ═══ */
.btn-primary {
    padding: 14px 32px;
    border-radius: 980px;
    background: #fff;
    color: #000;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: -0.01em;
    transition: all 0.3s var(--spring);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.2) 50%, rgba(255, 255, 255, 0) 100%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn-primary:hover::before {
    transform: translateX(100%);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.12), 0 0 60px rgba(255, 255, 255, 0.04);
}

.btn-primary:active {
    transform: scale(0.98) translateY(0);
}

.btn-secondary {
    padding: 14px 32px;
    border-radius: 980px;
    border: 1px solid var(--border-hover);
    color: var(--ti-300);
    font-size: 13px;
    font-weight: 600;
    transition: all 0.3s var(--spring);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    border-color: var(--ti-600);
    color: var(--ti-100);
    background: rgba(255, 255, 255, 0.03);
    transform: translateY(-2px);
}

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

/* ═══ Sections ═══ */
.section-header {
    text-align: center;
    max-width: 540px;
    margin: 0 auto 64px;
}

.label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ti-500);
    margin-bottom: 16px;
    display: block;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
    line-height: 1;
    background: linear-gradient(180deg, #FFF 0%, #D4D4D8 60%, #A1A1AA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-sub {
    font-size: 14px;
    color: var(--ti-500);
    line-height: 1.7;
}

.divider {
    max-width: var(--max-w);
    margin: 0 auto;
    height: 1px;
    position: relative;
}

.divider::after {
    content: '';
    position: absolute;
    left: var(--px);
    right: var(--px);
    top: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-hover) 50%, transparent);
}

/* ═══ Products ═══ */
.products {
    padding: 160px var(--px);
    position: relative;
    z-index: 1;
}

.product-grid {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background: var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 0 80px rgba(0, 0, 0, 0.4);
}

.product-card {
    display: block;
    background: var(--bg);
    transition: background 0.4s;
    opacity: 0;
    transform: translateY(24px);
}

.product-card[data-visible] {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s var(--spring), background 0.4s;
}

.product-card:hover {
    background: var(--s1);
}

.card-inner {
    padding: 48px 40px;
    display: grid;
    grid-template-columns: 48px 1fr auto auto;
    align-items: center;
    gap: 32px;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.3s, background 0.3s;
}

.product-card:hover .card-icon {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.05);
}

.card-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--ti-400);
    transition: stroke 0.3s;
}

.product-card:hover .card-icon svg {
    stroke: var(--ti-100);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
}

.card-name {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.card-badge {
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 8px;
    border-radius: 980px;
    background: rgba(255, 255, 255, 0.9);
    color: #000;
}

.card-badge.soon {
    background: rgba(255, 255, 255, 0.06);
    color: var(--ti-500);
}

.card-tagline {
    font-size: 12px;
    color: var(--ti-500);
    margin-bottom: 8px;
    font-weight: 500;
}

.card-desc {
    font-size: 13px;
    color: var(--ti-500);
    line-height: 1.6;
    max-width: 460px;
}

.card-stats {
    display: flex;
    gap: 24px;
}

.stat {
    text-align: center;
}

.stat strong {
    display: block;
    font-size: 16px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.stat span {
    font-size: 9px;
    color: var(--ti-600);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.card-arrow {
    font-size: 24px;
    color: var(--ti-700);
    font-weight: 300;
    transition: color 0.3s, transform 0.3s var(--spring);
}

.product-card:hover .card-arrow {
    color: var(--ti-200);
    transform: translateX(4px);
}

/* ═══ Security ═══ */
.security {
    padding: 160px var(--px);
    position: relative;
    z-index: 1;
}

.security-grid {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.3);
}

.sec-card {
    padding: 40px 36px;
    background: var(--bg);
    transition: background 0.3s;
    opacity: 0;
    transform: translateY(20px);
}

.sec-card[data-visible] {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s var(--spring), background 0.3s;
}

.sec-card:hover {
    background: var(--s1);
}

.sec-card h3 {
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.sec-card p {
    font-size: 13px;
    color: var(--ti-500);
    line-height: 1.7;
}

/* ═══ Philosophy ═══ */
.philosophy {
    padding: 160px var(--px);
    position: relative;
    z-index: 1;
}

.values-grid {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.3);
}

.value {
    padding: 40px 28px;
    background: var(--bg);
    transition: background 0.3s;
    opacity: 0;
    transform: translateY(20px);
}

.value[data-visible] {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s var(--spring), background 0.3s;
}

.value:hover {
    background: var(--s1);
}

.value-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--ti-800);
    letter-spacing: -0.04em;
    margin-bottom: 16px;
    transition: color 0.3s;
}

.value:hover .value-num {
    color: var(--ti-500);
}

.value h3 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.value p {
    font-size: 12px;
    color: var(--ti-500);
    line-height: 1.7;
}

/* ═══ Final CTA ═══ */
.final-cta {
    padding: 160px var(--px);
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
    background: linear-gradient(180deg, #FFF 0%, #D4D4D8 70%, #A1A1AA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-sub {
    font-size: 14px;
    color: var(--ti-500);
    margin-bottom: 36px;
}

.cta-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ═══ Footer ═══ */
.footer {
    border-top: 1px solid var(--border);
    padding: 48px var(--px);
    position: relative;
    z-index: 1;
}

.footer-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    text-align: center;
}

.footer-brand {
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.2em;
    color: var(--ti-600);
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.footer-links a {
    font-size: 12px;
    color: var(--ti-600);
    transition: color 0.2s;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--ti-100);
}

.footer-copy {
    font-size: 11px;
    color: var(--ti-700);
}

/* ═══ Responsive ═══ */
@media (max-width: 900px) {
    .card-inner {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .card-stats {
        justify-content: flex-start;
    }

    .card-arrow {
        display: none;
    }

    .security-grid {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .ambient-glow {
        display: none;
    }
}