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

:root {
    --bg:        #0a0e17;
    --bg-alt:    #111827;
    --surface:   #1a2235;
    --border:    #2a3450;
    --text:      #e2e8f0;
    --text-dim:  #94a3b8;
    --accent:    #6366f1;
    --accent-lt: #818cf8;
    --accent-bg: rgba(99,102,241,0.08);
    --serif:     'Source Serif 4', Georgia, serif;
    --sans:      'Inter', -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ── Nav ──────────────────────────────────────────────────── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--sans);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.logo span { color: var(--accent-lt); }

.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.btn-nav {
    background: var(--accent);
    color: #fff !important;
    padding: 0.45rem 1.1rem;
    border-radius: 6px;
    font-weight: 600 !important;
    transition: background 0.2s !important;
}
.btn-nav:hover { background: var(--accent-lt) !important; }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
    gap: 3rem;
}

.hero-content { padding-top: 64px; }

.hero h1 {
    font-family: var(--serif);
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero-sub {
    font-size: 1.15rem;
    color: var(--text-dim);
    line-height: 1.7;
    max-width: 520px;
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 0.75rem 1.8rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, transform 0.15s;
}
.btn-primary:hover { background: var(--accent-lt); transform: translateY(-1px); }

.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 64px;
}

#hero-canvas {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    border-radius: 16px;
}

/* ── Sections ─────────────────────────────────────────────── */
.section {
    padding: 6rem 2rem;
}

.section-dark {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

h2 {
    font-family: var(--serif);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.section-sub {
    color: var(--text-dim);
    font-size: 1.05rem;
    max-width: 600px;
    margin-bottom: 2.5rem;
}

/* ── Mission ──────────────────────────────────────────────── */
.mission-text {
    max-width: 680px;
}
.mission-text p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-dim);
}

/* ── Cards ────────────────────────────────────────────────── */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem 1.5rem;
    transition: border-color 0.25s, transform 0.2s;
}
.card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--accent-lt);
    line-height: 1;
}

.card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
}

.card p {
    font-size: 0.92rem;
    color: var(--text-dim);
    line-height: 1.6;
}

/* ── Application Form ─────────────────────────────────────── */
.apply-form {
    max-width: 600px;
    margin-top: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-dim);
    margin-bottom: 0.35rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: var(--sans);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group input[type="file"] {
    padding: 0.5rem;
    cursor: pointer;
}

.form-group textarea { resize: vertical; }

.form-status {
    margin-top: 1rem;
    font-size: 0.9rem;
    min-height: 1.4em;
}
.form-status.success { color: #34d399; }

/* ── Footer ───────────────────────────────────────────────── */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-text {
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 7rem;
        padding-bottom: 3rem;
    }
    .hero-visual { order: -1; padding-top: 0; }
    #hero-canvas { max-width: 320px; }
    .form-row { grid-template-columns: 1fr; }
    .nav-links a:not(.btn-nav) { display: none; }
}