:root {
  --bg:             #0d0d0d;
  --surface:        #181818;
  --surface-hover:  #212121;
  --border:         #2a2a2a;
  --border-hover:   #3d3d3d;
  --text:           #f0f0f0;
  --text-muted:     #888;
  --accent:         #3b82f6;
  --accent-hover:   #60a5fa;
  --shadow:         0 2px 12px rgba(0,0,0,.6);
  --shadow-hover:   0 6px 28px rgba(0,0,0,.85);
  --radius:         12px;
  color-scheme: dark;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}

/* ── Header ── */

.header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 2rem;
}

.header__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.header__logo {
  height: 36px;
  width: auto;
  display: block;
}

.header__tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── Grid ── */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 2.5rem auto;
  padding: 0 2rem;
}

/* ── Card ── */

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 200ms ease, border-color 200ms ease, transform 150ms ease;
  contain: layout paint style;
}

.card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

/* ── Badge ── */

.card__badge {
  position: absolute;
  top: 48px;
  right: -38px;
  background: #f59e0b;
  color: #000;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 5px 52px;
  transform: rotate(45deg);
  z-index: 10;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(0,0,0,.4);
}

/* ── Preview (iframe container) ── */

.card__preview {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #111;
}

/* Skeleton enquanto o iframe carrega */
.card__preview::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #1a1a1a 25%, #242424 50%, #1a1a1a 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  z-index: 1;
}

.card__preview.loaded::before {
  display: none;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.card__preview iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 1280px;
  height: 720px;
  border: none;
  transform-origin: top left;
  pointer-events: none;
  opacity: 0;
  transition: opacity 300ms ease;
}

.card__preview img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 300ms ease;
}

.card__preview.loaded iframe {
  opacity: 1;
}

.card__preview.loaded img {
  opacity: 1;
}

/* ── Footer ── */

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
  border-top: 1px solid var(--border);
}

.card__name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.card__link {
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: color 150ms ease;
}

.card__link:hover {
  color: var(--accent-hover);
}

/* ── Responsivo ── */

@media (max-width: 500px) {
  .grid {
    grid-template-columns: 1fr;
    padding: 0 1rem;
    margin: 1.5rem auto;
  }

  .header {
    padding: 1rem;
  }
}