:root {
    --bg: #f5f7fb;
    --bg-strong: #eef3ff;
    --panel: #ffffff;
    --panel-strong: #f8fafd;
    --panel-soft: #f1f5ff;
    --text: #0f172a;
    --text-soft: #475569;
    --muted: #64748b;
    --primary: #6d5efc;
    --primary-2: #4f8cff;
    --accent: #7c3aed;
    --success: #16a34a;
    --danger: #ef4444;
    --warning: #f59e0b;
    --border: rgba(148, 163, 184, 0.22);
    --shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
    --hero-glow: rgba(109, 94, 252, 0.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Inter, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(109, 94, 252, 0.15), transparent 30%),
        radial-gradient(circle at bottom right, rgba(79, 140, 255, 0.12), transparent 25%),
        var(--bg);
    color: var(--text);
    line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1200px, calc(100% - 32px)); margin: 0 auto; }
.topbar {
    position: sticky; top: 0; z-index: 10; backdrop-filter: blur(16px);
    background: rgba(255,255,255,0.7); border-bottom: 1px solid var(--border);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 24px; }
.brand { font-size: 1.35rem; font-weight: 900; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text); }
.nav { display: flex; align-items: center; gap: 26px; color: var(--muted); font-size: 0.96rem; }
.nav a { transition: color 0.2s ease; }
.nav a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; border-radius: 999px;
    padding: 0.9rem 1.4rem; font-weight: 700; border: 1px solid transparent; cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
    box-shadow: 0 18px 32px rgba(109, 94, 252, 0.25); color: white;
}
.btn-secondary {
    background: white; border-color: var(--border); color: var(--text); box-shadow: 0 8px 20px rgba(15,23,42,0.06);
}
.hero { padding: 72px 0 48px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 30px; align-items: center; }
.hero-copy h1 {
    font-size: clamp(2.8rem, 5vw, 5rem); line-height: 1.02; margin: 0 0 18px; letter-spacing: -0.07em; color: var(--text);
}
.lead { font-size: 1.18rem; color: var(--text-soft); max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 28px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 30px; }
.stat-pill {
    background: rgba(255,255,255,0.7); border: 1px solid var(--border); border-radius: 18px; padding: 0.9rem 1.15rem; min-width: 150px; box-shadow: 0 12px 28px rgba(15,23,42,0.04);
}
.stat-pill strong { display: block; color: var(--text); font-size: 1.3rem; }
.hero-visual { position: relative; min-height: 480px; }
.media-panel {
    position: absolute; inset: 0; border-radius: 32px; background: linear-gradient(180deg, rgba(255,255,255,0.85), rgba(241,245,255,0.78));
    border: 1px solid var(--border); box-shadow: var(--shadow), 0 0 0 1px rgba(109,94,252,0.05); overflow: hidden;
}
.media-grid { display: grid; grid-template-columns: repeat(3, minmax(110px, 1fr)); gap: 16px; padding: 26px; height: 100%; }
.media-tile {
    border-radius: 18px; background: linear-gradient(135deg, rgba(109,94,252,0.7), rgba(79,140,255,0.6));
    border: 1px solid rgba(255,255,255,0.2); min-height: 160px; position: relative; overflow: hidden; box-shadow: 0 18px 28px rgba(109,94,252,0.15);
}
.media-tile:nth-child(2n) { transform: translateY(24px); }
.media-tile::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(15,23,42,0.1)); }
.section { padding: 72px 0; }
.section-title { text-align: center; margin-bottom: 26px; }
.section-title h2 { margin: 0 0 12px; font-size: clamp(2rem, 3vw, 3rem); letter-spacing: -0.06em; color: var(--text); }
.section-title p { margin: 0; font-size: 1.08rem; color: var(--text-soft); }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.feature-card,
.content-card,
.auth-card,
.app-card,
.project-card,
.stat-card {
    border: 1px solid var(--border); border-radius: 24px; background: rgba(255,255,255,0.8); box-shadow: var(--shadow);
}
.feature-card { padding: 24px; }
.feature-card h3 { margin-top: 0; font-size: 1.25rem; margin-bottom: 10px; color: var(--text); }
.feature-card p { color: var(--text-soft); margin-bottom: 0; }
.site-footer { padding: 30px 0 48px; border-top: 1px solid var(--border); background: rgba(255,255,255,0.4); }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); }
.footer-row div { display: flex; gap: 18px; flex-wrap: wrap; }
.auth-shell { min-height: calc(100vh - 120px); display: grid; place-items: center; padding: 72px 0; }
.auth-card { width: min(460px, calc(100% - 24px)); padding: 32px 28px; background: rgba(255,255,255,0.9); }
.auth-card h1 { margin: 0 0 8px; font-size: 2rem; letter-spacing: -0.05em; color: var(--text); }
.auth-subtitle { color: var(--text-soft); margin-bottom: 22px; }
.form-grid { display: grid; gap: 16px; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
label { display: block; font-size: 0.92rem; color: var(--text-soft); font-weight: 600; }
input, select, textarea, button { font: inherit; }
input[type="text"], input[type="email"], input[type="password"], input[type="date"], input[type="number"], textarea, select {
    width: 100%; border-radius: 14px; border: 1px solid var(--border); background: white; color: var(--text); padding: 0.82rem 0.95rem; margin-top: 8px; box-shadow: inset 0 1px 2px rgba(15,23,42,0.025);
}
textarea { min-height: 110px; resize: vertical; }
.checkbox-row { display: flex; align-items: center; gap: 10px; color: var(--text-soft); margin-top: 4px; }
.checkbox-row input { width: auto; margin: 0; }
.auth-footer { margin-top: 18px; color: var(--muted); text-align: center; }
.alert-list { margin: 0 0 18px; padding-left: 20px; color: #b91c1c; }
.app-shell { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 24px; min-height: calc(100vh - 76px); padding: 28px 0 40px; }
.sidebar { background: rgba(255,255,255,0.8); border: 1px solid var(--border); border-radius: 28px; padding: 18px 14px; box-shadow: var(--shadow); }
.sidebar .brand { display: block; padding: 10px 12px 18px; }
.sidebar nav { display: grid; gap: 8px; }
.sidebar nav a { display: block; padding: 0.8rem 0.9rem; border-radius: 14px; color: var(--text-soft); transition: all 0.2s ease; }
.sidebar nav a:hover, .sidebar nav a.active { background: rgba(109,94,252,0.08); color: var(--text); }
.app-main { display: grid; gap: 20px; }
.topbar-app { display: flex; align-items: center; justify-content: space-between; background: rgba(255,255,255,0.8); border-radius: 22px; border: 1px solid var(--border); padding: 18px 20px; box-shadow: var(--shadow); }
.user-badge { color: var(--muted); }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.stat-card { padding: 18px 20px; }
.stat-card .label { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; }
.stat-card strong { display: block; font-size: clamp(1.5rem, 2vw, 2.2rem); margin-top: 10px; color: var(--text); }
.section-card { background: rgba(255,255,255,0.8); border: 1px solid var(--border); border-radius: 24px; padding: 22px; box-shadow: var(--shadow); }
.section-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.project-card { padding: 18px; }
.project-cover {
    height: 110px; border-radius: 16px; margin-bottom: 16px; background: linear-gradient(135deg, rgba(109,94,252,0.8), rgba(79,140,255,0.7));
    display: grid; place-items: center; color: white; font-weight: 800; letter-spacing: 0.08em;
}
.project-card h3 { margin: 0 0 6px; font-size: 1.2rem; color: var(--text); }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 0.85rem; margin: 12px 0 16px; }
.project-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.pill { display: inline-flex; align-items: center; border-radius: 999px; padding: 0.38rem 0.7rem; font-size: 0.8rem; background: rgba(34,197,94,0.12); color: #166534; border: 1px solid rgba(34,197,94,0.2); }
.form-wrap { max-width: 760px; }
.empty-state { padding: 24px; border: 1px dashed var(--border); border-radius: 18px; color: var(--text-soft); text-align: center; }
@media (max-width: 900px) {
    .hero-grid, .app-shell, .feature-grid, .stats-grid { grid-template-columns: 1fr; }
    .nav { display: none; }
    .footer-row, .section-header, .topbar-app { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
    .field-row { grid-template-columns: 1fr; }
    .nav-actions { width: 100%; justify-content: flex-end; }
}