/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-0: #07080d;
    --bg-1: #0d0f1a;
    --surface: rgba(255, 255, 255, 0.04);
    --surface-strong: rgba(255, 255, 255, 0.07);
    --border: rgba(255, 255, 255, 0.10);
    --border-strong: rgba(255, 255, 255, 0.22);
    --text: #f4f5f9;
    --text-muted: rgba(244, 245, 249, 0.62);
    --text-dim: rgba(244, 245, 249, 0.40);
    --accent-1: #a855f7;
    --accent-2: #06b6d4;
    --accent-3: #f472b6;
    --accent-4: #facc15;
    --radius: 18px;
    --radius-lg: 28px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background-color: var(--bg-0);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

::selection {
    background: var(--accent-1);
    color: #fff;
}

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 1.75rem;
}

/* ---------- Animated background ---------- */
.bg-canvas {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    background:
        radial-gradient(ellipse at top, #14162a 0%, var(--bg-0) 70%);
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.55;
    will-change: transform;
}

.blob--1 {
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, var(--accent-1), transparent 70%);
    top: -8%;
    left: -6%;
    animation: drift1 22s ease-in-out infinite;
}

.blob--2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-2), transparent 70%);
    top: 18%;
    right: -10%;
    animation: drift2 26s ease-in-out infinite;
}

.blob--3 {
    width: 460px;
    height: 460px;
    background: radial-gradient(circle, var(--accent-3), transparent 70%);
    bottom: 5%;
    left: 18%;
    animation: drift3 30s ease-in-out infinite;
    opacity: 0.45;
}

.blob--4 {
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, var(--accent-4), transparent 70%);
    bottom: -8%;
    right: 22%;
    animation: drift4 28s ease-in-out infinite;
    opacity: 0.30;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
}

@keyframes drift1 {
    0%,100%   { transform: translate(0, 0) scale(1); }
    50%       { transform: translate(120px, 80px) scale(1.15); }
}
@keyframes drift2 {
    0%,100%   { transform: translate(0, 0) scale(1); }
    50%       { transform: translate(-100px, 120px) scale(1.10); }
}
@keyframes drift3 {
    0%,100%   { transform: translate(0, 0) scale(1); }
    50%       { transform: translate(80px, -90px) scale(1.20); }
}
@keyframes drift4 {
    0%,100%   { transform: translate(0, 0) scale(1); }
    50%       { transform: translate(-140px, -60px) scale(1.10); }
}

/* ---------- Hero ---------- */
.hero {
    padding: 7rem 0 4.5rem;
    text-align: left;
}

.eyebrow {
    display: inline-block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 0.45rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    margin-bottom: 1.75rem;
}

.hero h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.4rem, 6vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -0.035em;
    line-height: 1.02;
    margin-bottom: 1.25rem;
    background: linear-gradient(180deg, #ffffff 0%, #b9bccc 110%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.tagline {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 38rem;
    margin-bottom: 2.25rem;
}

.quicknav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.quicknav a {
    font-size: 0.88rem;
    color: var(--text);
    text-decoration: none;
    padding: 0.55rem 1.1rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all 0.2s ease;
}

.quicknav a:hover {
    background: var(--surface-strong);
    border-color: var(--border-strong);
    transform: translateY(-1px);
}

/* ---------- Sections ---------- */
main {
    padding: 2.5rem 1.75rem 5rem;
}

section {
    margin-bottom: 5rem;
    scroll-margin-top: 2rem;
}

.section-head {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.section-num {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: 0.1em;
    padding-top: 0.55rem;
}

section h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.7rem, 3vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--text);
    margin-bottom: 0.4rem;
}

.section-intro {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 42rem;
}

/* ---------- Cards ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.1rem;
}

.card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.6rem 1.5rem 1.4rem;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: border-color 0.25s ease, background 0.25s ease;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
        rgba(168, 85, 247, 0.08) 0%,
        transparent 40%,
        rgba(6, 182, 212, 0.08) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.card:hover {
    border-color: var(--border-strong);
    background: var(--surface-strong);
}

.card:hover::before {
    opacity: 1;
}

.card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.55rem;
    letter-spacing: -0.01em;
}

.card p {
    color: var(--text-muted);
    font-size: 0.93rem;
    flex-grow: 1;
    margin-bottom: 1.4rem;
}

.btn {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text);
    text-decoration: none;
    padding: 0.55rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.04);
    transition: background 0.2s ease, border-color 0.2s ease, gap 0.2s ease;
}

.btn .arrow {
    display: inline-block;
    transition: transform 0.25s ease;
}

.btn:hover {
    background: #fff;
    color: #0d0f1a;
    border-color: #fff;
}

.btn:hover .arrow {
    transform: translateX(3px);
}

.btn:focus-visible {
    outline: 2px solid var(--accent-2);
    outline-offset: 3px;
}

/* ---------- Footer ---------- */
footer {
    border-top: 1px solid var(--border);
    padding: 2.5rem 0;
    text-align: center;
    font-size: 0.88rem;
    color: var(--text-muted);
    background: rgba(7, 8, 13, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

footer a {
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid var(--border-strong);
    transition: border-color 0.2s ease;
}

footer a:hover {
    border-color: var(--accent-2);
}

.footer-note {
    margin-top: 0.4rem;
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
    .hero {
        padding: 5rem 0 3rem;
    }

    .section-head {
        gap: 0.9rem;
    }

    .blob {
        filter: blur(70px);
    }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    .blob {
        animation: none;
    }

    html {
        scroll-behavior: auto;
    }
}