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

:root {
    --bg: #020617;
    --card-bg: rgba(15, 23, 42, 0.85);
    --border-soft: rgba(148, 163, 184, 0.35);
    --accent: #6366f1;
    --accent-soft: rgba(99, 102, 241, 0.25);
    --text: #f9fafb;
    --muted: #9ca3af;
    --radius-xl: 24px;
    --radius-lg: 18px;
    --shadow-soft: 0 30px 80px rgba(15, 23, 42, 0.9);
    --transition-fast: 0.18s ease-out;
}

body {
    min-height: 100vh;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
        "Segoe UI", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, #22d3ee20, transparent 60%),
        radial-gradient(circle at bottom right, #a855f720, transparent 60%),
        var(--bg);
    display: flex;
    justify-content: center;
    padding: 18px;
}

.app {
    width: 100%;
    max-width: 960px;
    position: relative;
}

.top-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
}

.logo-dot {
    width: 22px;
    height: 22px;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 20%, #22d3ee, #6366f1);
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.25);
}

.logo-text {
    font-size: 0.95rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted);
}

.main {
    padding: 22px 20px 26px;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.9));
    border: 1px solid rgba(148, 163, 184, 0.4);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.main::before {
    content: "";
    position: absolute;
    inset: -40%;
    background:
        radial-gradient(circle at 0% 0%, rgba(56, 189, 248, 0.18), transparent 55%),
        radial-gradient(circle at 100% 100%, rgba(129, 140, 248, 0.22), transparent 55%);
    opacity: 0.7;
    filter: blur(30px);
    z-index: -1;
}

.hero {
    margin-bottom: 22px;
}

.hero h1 {
    font-size: 1.7rem;
    font-weight: 650;
    letter-spacing: 0.02em;
    margin-bottom: 6px;
}

.hero p {
    font-size: 0.95rem;
    color: var(--muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 10px;
}

.card {
    position: relative;
    display: block;
    padding: 18px 18px 16px;
    border-radius: var(--radius-xl);
    background: radial-gradient(circle at 0 0, var(--accent-soft), transparent 70%),
                var(--card-bg);
    border: 1px solid var(--border-soft);
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        border-color var(--transition-fast),
        background var(--transition-fast);
}

.card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 120% 0%, rgba(251, 191, 36, 0.12), transparent 55%);
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 22px 60px rgba(15, 23, 42, 0.95);
    border-color: rgba(129, 140, 248, 0.7);
}

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

.card-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    padding: 4px 9px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.45);
    color: var(--muted);
    margin-bottom: 10px;
}

.card-tag::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--accent);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.35);
}

.card h2 {
    font-size: 1.1rem;
    margin-bottom: 6px;
}

.card p {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 12px;
}

.card-meta {
    display: flex;
    gap: 10px;
    font-size: 0.8rem;
    color: var(--muted);
    opacity: 0.9;
}

.card-meta span {
    padding: 3px 8px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(51, 65, 85, 0.9);
}

@media (max-width: 600px) {
    body {
        padding: 12px;
    }
    .main {
        padding: 18px 14px 20px;
        border-radius: 22px;
    }
    .hero h1 {
        font-size: 1.5rem;
    }
}