/*
  SF3 Design System - Premium Dark Theme
*/

:root {
  --bg-color: #a9a9a9;
  --bg-gradient: radial-gradient(circle at top, #d3d3d3 0%, #a9a9a9 50%, #707070 100%);
  --card-bg: #ffffff;
  --card-border: rgba(0, 0, 0, 0.08);
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --accent-orange: #e65c00;
  --accent-hover: #cc5200;
  --font-primary: 'Inter', sans-serif;
  --shadow-normal: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 16px 32px rgba(230, 92, 0, 0.15);
}

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

body {
  font-family: var(--font-primary);
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  padding-bottom: 2rem;
}

.site-header {
  text-align: center;
  margin: 4rem 0 3.5rem;
  padding: 0 1rem;
}

.site-header .title {
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(90deg, #111111, #555555);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
  letter-spacing: -1.5px;
}

.site-header .subtitle {
  font-size: 1.1rem;
  color: var(--accent-orange);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 2rem;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.cover-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 4px; /* Sedikit lengkung untuk frame luar */
  padding: 12px; /* Jarak proporsional putih membungkus cover */
  overflow: hidden;
  box-shadow: var(--shadow-normal);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease, border-color 0.4s ease;
  display: flex;
  flex-direction: column;
}

.cover-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 102, 0, 0.3);
}

.cover-link {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: #000;
}

.cover-img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), filter 0.6s ease;
  filter: brightness(0.9);
}

.cover-card:hover .cover-img {
  transform: scale(1.08);
  filter: brightness(1.1);
}



.cover-title {
  font-size: 1.15rem;
  font-weight: 600;
  padding: 1.5rem 1.2rem;
  color: var(--text-primary);
  text-align: center;
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.4;
}



.site-footer {
  margin-top: 5rem;
  padding: 2rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}