:root {
    --md-primary: #4f46e5;
    --md-surface: #0b1220;
    --md-card: #111827;
    --md-text-primary: #e5e7eb;
    --md-text-secondary: #9ca3af;
    --md-border-radius: 20px;
    --md-elevation: 0 10px 30px rgba(0, 0, 0, 0.4);
}

/* Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Roboto, system-ui, sans-serif;
    background: radial-gradient(circle at top, #0f172a, #020617);
    color: var(--md-text-primary);
}

/* Header */
header {
    padding: 48px 24px 32px;
    max-width: 1200px;
    margin-inline: auto;
}

header h1 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin: 0 0 8px;
    font-weight: 700;
}

header p {
    margin: 0;
    color: var(--md-text-secondary);
    max-width: 700px;
    line-height: 1.6;
}

/* Layout */
main {
    max-width: 1200px;
    margin-inline: auto;
    padding: 24px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

/* Card */
.card {
    background: var(--md-card);
    border-radius: var(--md-border-radius);
    overflow: hidden;
    box-shadow: var(--md-elevation);
    display: flex;
    flex-direction: column;
    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.55);
}

.card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.card-content h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.card-content h3 a {
    text-decoration: none;
    color: inherit;
}

.card-content p {
    margin: 0;
    color: var(--md-text-secondary);
    line-height: 1.55;
    flex: 1;
}

.meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--md-text-secondary);
}

.badge {
    background: rgba(79, 70, 229, 0.15);
    color: #c7d2fe;
    padding: 6px 12px;
    border-radius: 999px;
    font-weight: 500;
}

/* Footer */
footer {
    max-width: 1200px;
    margin: 48px auto 24px;
    padding: 0 24px;
    color: var(--md-text-secondary);
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

footer a {
    color: #93c5fd;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 480px) {
    .card img {
        height: 180px;
    }
}