:root {
    --panel-bg-top: #e8f0fe;
    --panel-bg-bottom: #f1f5f9;
    --panel-text: #0f172a;
    --panel-muted: #64748b;
    --panel-accent: #2563eb;
    --panel-page-max-width: 980px;
    --panel-font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --panel-shadow: 0 6px 24px rgba(15, 23, 42, 0.1);
    --panel-shadow-hover: 0 12px 36px rgba(15, 23, 42, 0.16);
}

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

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: var(--panel-font);
    color: var(--panel-text);
    background: linear-gradient(165deg, var(--panel-bg-top) 0%, var(--panel-bg-bottom) 55%, #e2e8f0 100%);
    background-attachment: fixed;
}

.panel-page {
    --panel-scale: 1;
    --panel-card-width: 300px;
    --panel-card-radius: calc(12px * var(--panel-scale));
    --panel-card-gap: calc(0.9rem * var(--panel-scale));
    --panel-card-padding-y: calc(0.85rem * var(--panel-scale));
    --panel-card-padding-x: calc(1rem * var(--panel-scale));
    --panel-card-title-size: calc(1.1rem * var(--panel-scale));
    --panel-card-desc-size: calc(0.8rem * var(--panel-scale));
    --panel-card-cta-size: calc(0.72rem * var(--panel-scale));
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: var(--panel-page-max-width);
    margin: 0 auto;
    padding: 1.5rem 1rem 1.25rem;
}

.panel-header {
    text-align: center;
    margin-bottom: 1.35rem;
}

.panel-logo {
    display: block;
    max-height: 64px;
    width: auto;
    margin: 0 auto 1rem;
}

.panel-title {
    margin: 0;
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--panel-text);
}

.panel-subtitle {
    margin: 0.5rem 0 0;
    font-size: 1.05rem;
    color: var(--panel-muted);
}

.panel-main {
    flex: 1;
}

.panel-empty {
    text-align: center;
    color: var(--panel-muted);
    padding: 2rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: var(--panel-card-radius);
    border: 1px dashed #cbd5e1;
}

/* 5 kart: üstte 3, altta 2 (ortalanmış). Satır başına en fazla 3 kart. */
.program-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: flex-start;
    gap: var(--panel-card-gap);
    margin-inline: auto;
    max-width: calc((var(--panel-card-width) * 3) + (var(--panel-card-gap) * 2));
}

.program-card {
    position: relative;
    display: flex;
    align-items: flex-end;
    flex: 0 0 var(--panel-card-width);
    width: var(--panel-card-width);
    aspect-ratio: 16 / 9;
    border-radius: var(--panel-card-radius);
    overflow: hidden;
    text-decoration: none;
    color: #fff;
    background-color: #334155;
    box-shadow: var(--panel-shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    outline: none;
}

.program-card__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.program-card:focus-visible {
    box-shadow: var(--panel-shadow-hover), 0 0 0 3px var(--panel-accent);
}

.program-card:hover {
    transform: translateY(-3px) scale(1.015);
    box-shadow: var(--panel-shadow-hover);
}

.program-card__overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
        to top,
        rgba(0, 0, 0, 0.72) 0%,
        rgba(0, 0, 0, 0.35) 45%,
        rgba(0, 0, 0, 0.2) 100%
    );
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.program-card:hover .program-card__overlay {
    opacity: 0.85;
}

.program-card__content {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: var(--panel-card-padding-y) var(--panel-card-padding-x);
    display: flex;
    flex-direction: column;
    gap: calc(0.2rem * var(--panel-scale));
}

.program-card__title {
    font-size: var(--panel-card-title-size);
    font-weight: 700;
    line-height: 1.2;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.45);
}

.program-card__desc {
    font-size: var(--panel-card-desc-size);
    line-height: 1.35;
    opacity: 0.92;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.program-card__cta {
    margin-top: calc(0.35rem * var(--panel-scale));
    font-size: var(--panel-card-cta-size);
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.program-card:hover .program-card__cta,
.program-card:focus-visible .program-card__cta {
    opacity: 1;
    transform: translateY(0);
}

.panel-footer {
    margin-top: 2rem;
    text-align: center;
}

.panel-footer p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--panel-muted);
}

@media (max-width: 720px) {
    .program-grid {
        max-width: calc((var(--panel-card-width) * 2) + var(--panel-card-gap));
    }
}

@media (max-width: 400px) {
    .program-grid {
        max-width: var(--panel-card-width);
    }

    .program-card {
        flex: 0 0 min(var(--panel-card-width), 100%);
        width: min(var(--panel-card-width), 100%);
    }
}

@media (prefers-reduced-motion: reduce) {
    .program-card,
    .program-card__overlay,
    .program-card__cta {
        transition: none;
    }

    .program-card:hover {
        transform: none;
    }
}