/* === Cards ===
 * Card patterns for course/contest/event list blocks.
 * Extracted from course.css, contest.css, event.css.
 */

/* ── Base card ──────────────────────────────── */
.card {
    display: flex;
    flex-direction: column;
    background: var(--color-primary-bg);
    border-radius: var(--radius-lg);
    padding: 20px 30px;
    transition: transform var(--transition-normal) var(--ease-out),
                box-shadow var(--transition-normal) var(--ease-out);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

/* ── Card with hover lift ─────────────────────── */
.card--hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ── Card variants ──────────────────────────── */
.card--outline {
    background: var(--color-white);
    border: 1px solid var(--color-border);
}

.card--filled {
    background: var(--color-primary-bg);
    border: 1px solid var(--color-primary-border);
}

/* ── Card header ────────────────────────────── */
.card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card__title {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: var(--text-lg);
    color: var(--color-primary);
    line-height: var(--leading-normal);
}

.card__title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast) var(--ease-out);
}

.card__title a:hover {
    color: var(--color-primary-hover);
}

/* ── Card body ──────────────────────────────── */
.card__body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.card__text {
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: var(--leading-relaxed);
}

/* ── Card footer ────────────────────────────── */
.card__footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* ── Card grid layout ───────────────────────── */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

/* ── 3D Tilt ───────────────────────────────────── */
.card--tilt {
    position: relative;
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform 0.6s var(--ease-out);
    overflow: hidden;
}

.card--tilt:hover {
    z-index: 2;
}

.card--tilt__glare {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(
        circle at 50% 50%,
        rgba(255, 255, 255, 0.25) 0%,
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 1;
}