/* =========================================================
   LAB HUB - STYLE
   File: /lab/assets/style.css
   ========================================================= */

/* =========================
   1) Root Variables
========================= */
:root {
    --bg: #eff4ff;
    --bg-soft: #f8fbff;
    --surface: rgba(255, 255, 255, 0.76);
    --surface-strong: rgba(255, 255, 255, 0.9);
    --line: rgba(22, 34, 58, 0.14);
    --text: #132034;
    --text-soft: #3b4f6b;
    --accent-a: #586dff;
    --accent-b: #53d5ff;
    --accent-c: #b56cf5;
    --shadow: 0 18px 42px rgba(35, 58, 99, 0.14);
    --radius-lg: 1.3rem;
    --radius-md: 1rem;
    --radius-sm: 0.72rem;
    --container: min(1180px, calc(100% - 2rem));
}

/* =========================
   2) Base
========================= */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: "Inter", "Segoe UI", Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 8% -10%, rgba(88, 109, 255, 0.24), transparent 36%),
        radial-gradient(circle at 88% -8%, rgba(83, 213, 255, 0.22), transparent 36%),
        linear-gradient(180deg, #f6f9ff 0%, #edf3ff 46%, #f7faff 100%);
    line-height: 1.64;
    min-height: 100vh;
    overflow-x: hidden;
}

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

a {
    color: inherit;
}

.container {
    width: var(--container);
    margin-inline: auto;
    position: relative;
    z-index: 3;
}

/* =========================
   3) Background Effects
========================= */
.lab-background {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.5;
}

.blob-a {
    width: 360px;
    height: 360px;
    top: -100px;
    left: -120px;
    background: radial-gradient(circle, rgba(88, 109, 255, 0.72), transparent 72%);
    animation: float 14s ease-in-out infinite;
}

.blob-b {
    width: 340px;
    height: 340px;
    top: -140px;
    right: -100px;
    background: radial-gradient(circle, rgba(83, 213, 255, 0.68), transparent 72%);
    animation: float 16s ease-in-out infinite reverse;
}

.blob-c {
    width: 300px;
    height: 300px;
    bottom: -130px;
    left: 42%;
    background: radial-gradient(circle, rgba(181, 108, 245, 0.62), transparent 72%);
    animation: pulse 10s ease-in-out infinite;
}

.grid {
    position: absolute;
    inset: 0;
    opacity: 0.09;
    background-image:
        linear-gradient(rgba(20, 42, 80, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(20, 42, 80, 0.3) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(circle at 50% 35%, black 35%, transparent 76%);
}

/* =========================
   4) Header
========================= */
.lab-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding-top: 0.8rem;
}

.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border: 1px solid transparent;
    border-radius: 1rem;
    padding: 0.62rem 0.78rem;
    transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.lab-header.is-scrolled .header-row {
    background: rgba(255, 255, 255, 0.72);
    border-color: var(--line);
    box-shadow: 0 14px 28px rgba(37, 61, 102, 0.12);
    backdrop-filter: blur(10px);
}

.lab-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    text-decoration: none;
    color: var(--text);
}

.lab-logo img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.lab-logo span {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.lab-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.lab-nav a {
    text-decoration: none;
    color: var(--text-soft);
    font-weight: 600;
    font-size: 0.92rem;
    border-radius: 999px;
    padding: 0.48rem 0.84rem;
    transition: color 0.2s ease, background 0.2s ease;
}

.lab-nav a:hover,
.lab-nav a:focus-visible {
    color: var(--text);
    background: rgba(88, 109, 255, 0.11);
    outline: none;
}

/* =========================
   5) Hero
========================= */
.hero {
    padding: clamp(4.6rem, 10vw, 7.2rem) 0 clamp(2.4rem, 5vw, 3.6rem);
}

.hero-content {
    max-width: 760px;
}

.eyebrow {
    margin: 0 0 0.7rem;
    color: #3954ef;
    text-transform: uppercase;
    letter-spacing: 0.13em;
    font-weight: 700;
    font-size: 0.72rem;
}

.hero h1 {
    margin: 0;
    font-size: clamp(2.25rem, 6vw, 4.8rem);
    line-height: 1.02;
    letter-spacing: 0.02em;
    background: linear-gradient(125deg, #16233a 0%, #3d57ef 48%, #25a9df 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-text {
    margin: 1rem 0 1.5rem;
    color: var(--text-soft);
    max-width: 66ch;
}

.hero-text-stack {
    display: grid;
    gap: 0.85rem;
    margin: 1rem 0 1.5rem;
}

.hero-text-stack .hero-text {
    margin: 0;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
    background: linear-gradient(110deg, #3a55f2, #1f97e3);
    padding: 0.82rem 1.32rem;
    box-shadow: 0 14px 28px rgba(58, 85, 242, 0.28);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hero-cta:hover,
.hero-cta:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 18px 30px rgba(58, 85, 242, 0.34);
    outline: none;
}

/* =========================
   6) Showcase
========================= */
.showcase {
    padding: clamp(1rem, 3vw, 2.2rem) 0 4.8rem;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 1.6rem;
}

.section-heading h2 {
    margin: 0 0 0.6rem;
    font-size: clamp(1.5rem, 3.2vw, 2.55rem);
    line-height: 1.2;
}

.section-heading p {
    margin: 0;
    color: var(--text-soft);
}

.section-heading p + p {
    margin-top: 0.7rem;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.showcase-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface);
    backdrop-filter: blur(8px);
    overflow: hidden;
    min-height: 100%;
    box-shadow: var(--shadow);
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.showcase-card:hover,
.showcase-card:focus-within {
    transform: translateY(-8px);
    border-color: rgba(88, 109, 255, 0.34);
    box-shadow: 0 24px 48px rgba(35, 58, 99, 0.18);
}

.card-media {
    display: grid;
    place-items: center;
    min-height: 170px;
    padding: 1.2rem;
    background:
        radial-gradient(circle at 18% 14%, rgba(88, 109, 255, 0.18), transparent 42%),
        radial-gradient(circle at 86% 20%, rgba(83, 213, 255, 0.2), transparent 44%),
        rgba(255, 255, 255, 0.84);
}

.card-media img {
    max-width: 210px;
    max-height: 110px;
    object-fit: contain;
}

.card-copy {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem 1rem 1.1rem;
    flex: 1;
}

.card-tag {
    margin: 0;
    color: #4c62f2;
    text-transform: uppercase;
    letter-spacing: 0.11em;
    font-size: 0.7rem;
    font-weight: 700;
}

.card-copy h3 {
    margin: 0;
    font-size: 1.22rem;
}

.card-copy p {
    margin: 0;
    color: var(--text-soft);
}

.card-copy p:last-of-type {
    flex: 1;
}

.card-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    margin-top: 0.2rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(58, 85, 242, 0.25);
    background: rgba(88, 109, 255, 0.1);
    color: #24358e;
    font-weight: 700;
    padding: 0.62rem 0.82rem;
    transition: transform 0.2s ease, background 0.2s ease;
}

.archive-note {
    margin-top: 1.35rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow);
    padding: 1rem 1.05rem;
}

.archive-note p {
    margin: 0;
    color: var(--text-soft);
}

.archive-note p + p {
    margin-top: 0.58rem;
}

.card-btn:hover,
.card-btn:focus-visible {
    transform: translateY(-1px);
    background: rgba(88, 109, 255, 0.16);
    outline: none;
}

/* =========================
   7) Footer
========================= */
.lab-footer {
    padding: 2rem 0 2.5rem;
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.44);
    position: relative;
    z-index: 3;
}

.lab-footer .container {
    text-align: center;
}

.lab-footer p {
    margin: 0;
    color: var(--text-soft);
    font-size: 0.9rem;
}

.lab-footer p + p {
    margin-top: 0.35rem;
}

/* =========================
   8) Reveal Animation
========================= */
.reveal {
    opacity: 0;
    transform: translateY(24px) scale(0.99);
    transition:
        opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1),
        transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
    transition-delay: var(--d, 0ms);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* =========================
   9) Keyframes
========================= */
@keyframes float {
    0%,
    100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(16px, -18px);
    }
}

@keyframes pulse {
    0%,
    100% {
        opacity: 0.42;
        transform: scale(1);
    }
    50% {
        opacity: 0.58;
        transform: scale(1.08);
    }
}

/* =========================
   10) Responsive
========================= */
@media (max-width: 1080px) {
    .showcase-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    :root {
        --container: min(1180px, calc(100% - 1.3rem));
    }

    .lab-header {
        padding-top: 0.55rem;
    }

    .header-row {
        padding: 0.48rem 0.58rem;
    }

    .lab-nav {
        gap: 0.1rem;
    }

    .lab-nav a {
        padding: 0.4rem 0.58rem;
        font-size: 0.84rem;
    }

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

    .card-media {
        min-height: 150px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}