/* ============================================
   Challenges Cards – top, medium, small, badges, buttons
   ============================================ */

/* ── Top Challenge (full‑width banner) ── */
.top-challenge-card {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    aspect-ratio: 2 / 1;
}

.top-challenge-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
}

.top-challenge-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--padding-xl);
    color: white;
    height: 100%;
}

.top-challenge-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin: var(--margin-sm) 0;
}

.top-challenge-excerpt {
    font-size: var(--font-size-md);
    max-width: 600px;
    margin-bottom: var(--margin-md);
    color: rgba(255, 255, 255, 0.85);
}

.top-challenge-content .badge { margin-bottom: var(--margin-sm); }
.top-challenge-content .prize { color: var(--gold); font-weight: var(--font-weight-bold); }
.top-challenge-content .deadline {
    color: var(--color-warning);
    margin: var(--margin-xs) 0 var(--margin-md);
}

/* ── Medium Challenge Card ── */
.medium-challenge-card {
    background: var(--color-primary-100);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.medium-challenge-img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    filter: brightness(0.9);
}

.medium-challenge-body {
    padding: var(--padding-lg);
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    flex: 1;
}

.medium-challenge-body .card-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.medium-challenge-body .card-excerpt {
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
    flex: 1;
}

.medium-challenge-body .prize {
    color: var(--gold);
    font-weight: var(--font-weight-medium);
}

.medium-challenge-body .deadline { color: var(--color-error); }

/* ── Small Challenge Card (grid) ── */
.card--challenge {
    background: var(--color-surface-muted);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
}

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

.card--challenge .card-image { margin: 0; }

.card--challenge .card-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

.card--challenge .card-body {
    padding: var(--padding-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
}

.card--challenge .card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.card--challenge .card-excerpt {
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
    line-height: var(--line-height-md);
    flex: 1;
}

.challenge-meta {
    display: flex;
    flex-direction: column;
    gap: var(--gap-xs);
    font-size: var(--font-size-sm);
    color: var(--color-primary-700);
}

/* Past challenges */
.card--past { opacity: 0.85; }

/* ── Meta tokens ── */
.prize {
    font-weight: var(--font-weight-medium);
    color: var(--gold);
}

.deadline { color: var(--color-error); }

.winner {
    font-weight: var(--font-weight-bold);
    color: var(--color-success);
}

/* ── Badge ── */
.badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    padding: var(--gap-xs) var(--gap-sm);
    border-radius: var(--radius-pill);
    color: white;
    background: var(--color-primary-500);
}

.badge--design { background: var(--color-primary-500); }
.badge--bug    { background: var(--color-error); }
.badge--content { background: var(--color-info); }

/* ── Buttons ── */
.btn--primary {
    display: inline-block;
    background: var(--color-primary-600);
    color: white;
    padding: var(--padding-sm) var(--padding-lg);
    border-radius: var(--radius-pill);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: background 0.2s;
}

.btn--primary:hover { background: var(--color-primary-700); }

.challenge-enter-btn {
    align-self: flex-start;
    margin-top: var(--margin-sm);
}

/* ── Winner cards ── */
.winner-card {
    background: var(--color-surface-muted);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--padding-lg);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--gap-sm);
    min-width: 160px;
}

.winner-avatar svg {
    width: 48px;
    height: 48px;
}

.winner-name { color: var(--color-text-primary); }

.winner-prize {
    font-size: var(--font-size-sm);
    color: var(--color-primary-700);
}

.winner-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-primary);
}