:root {
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #14b8a6; /* Teal/Green for Altaif */
  --accent-hover: #0d9488;
  --border: #334155;
  --danger: #ef4444;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  direction: rtl;
}
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 250px;
  background-color: var(--bg-card);
  border-left: 1px solid var(--border);
  padding: 1.5rem;
}
.sidebar-title { font-size: 1.25rem; font-weight: bold; margin-bottom: 2rem; color: var(--accent); }
.nav-link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-main);
  text-decoration: none;
  border-radius: 0.375rem;
  margin-bottom: 0.5rem;
}
.nav-link:hover, .nav-link.active { background-color: var(--border); color: var(--accent); }
.main-content { flex: 1; padding: 2rem; overflow-y: auto; }
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.grid-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
h1, h2, h3 { margin-top: 0; }
.btn {
  background-color: var(--accent);
  color: #fff;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  cursor: pointer;
  font-size: 1rem;
  text-decoration: none;
  display: inline-block;
}
.btn:hover { background-color: var(--accent-hover); }
.btn-outline { background-color: transparent; border: 1px solid var(--accent); color: var(--accent); }
.btn-outline:hover { background-color: var(--accent); color: #fff; }
.btn-danger { background-color: transparent; border: 1px solid var(--danger); color: var(--danger); }
.btn-danger:hover { background-color: var(--danger); color: #fff; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.5rem; color: var(--text-muted); }
.form-control {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--bg-dark);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 0.375rem;
}
.form-control:focus { outline: none; border-color: var(--accent); }
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.auth-card {
  width: 100%;
  max-width: 400px;
}
.auth-card h1 { text-align: center; color: var(--accent); margin-bottom: 2rem; }
.alert { padding: 1rem; border-radius: 0.375rem; margin-bottom: 1rem; background-color: rgba(239,68,68,0.1); color: var(--danger); border: 1px solid var(--danger); }
.badge { display: inline-block; padding: 0.25rem 0.5rem; border-radius: 9999px; font-size: 0.75rem; background-color: var(--border); }
.badge-success { background-color: rgba(20,184,166,0.1); color: var(--accent); border: 1px solid var(--accent); }
.thumbnail { width: 100%; height: 150px; object-fit: cover; border-radius: 0.375rem; margin-bottom: 1rem; }
.preview-box {
  width: 320px;
  background: #fff;
  color: #000;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  position: relative;
}
.preview-img { width: 100%; display: block; }
.preview-btn {
  display: block;
  background: var(--accent);
  color: #fff;
  text-align: center;
  padding: 12px;
  text-decoration: none;
  font-weight: bold;
}
@media (max-width: 768px) {
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; border-left: none; border-bottom: 1px solid var(--border); display: flex; flex-wrap: wrap; padding: 1rem; }
  .sidebar-title { width: 100%; margin-bottom: 1rem; }
  .nav-link { margin-left: 0.5rem; }
}