/* ====================================
   PromptGallery — Admin Styles
   ==================================== */

/* ── Admin Layout ── */
.admin-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: calc(100vh - var(--header-height));
}

.admin-sidebar {
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  padding: var(--space-xl);
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
}
.admin-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.admin-sidebar-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.65rem 1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.admin-sidebar-nav a:hover,
.admin-sidebar-nav a.active {
  background: rgba(var(--color-primary-rgb), 0.12);
  color: var(--color-primary-light);
}

.admin-main {
  padding: var(--space-2xl);
  overflow-x: hidden;
  overflow-y: auto;
  min-width: 0; /* prevent content from overflowing grid */
}
.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}
.admin-header h1 {
  font-size: var(--font-size-xl);
}

/* ── Stats Grid ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

/* ── Data Table ── */
.data-table-wrapper {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-x: auto; /* horizontal scroll on mobile */
  -webkit-overflow-scrolling: touch;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px; /* prevent column collapse on small screens */
}
.data-table th,
.data-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-size: var(--font-size-sm);
  border-bottom: 1px solid var(--color-border);
}
.data-table th {
  background: var(--color-bg-tertiary);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.data-table td {
  color: var(--color-text-secondary);
}
.data-table tr:hover td {
  background: var(--color-bg-hover);
}
.data-table-thumb {
  width: 60px;
  height: 40px;
  object-fit: cover;
  border-radius: var(--radius-xs);
}

/* ── Admin Login ── */
.admin-login {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}
.login-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-xl);
}
.login-card h1 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xs);
}
.login-card p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xl);
}

/* ── Upload Form ── */
.upload-form {
  max-width: 700px;
}
.upload-dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  margin-bottom: var(--space-xl);
}
.upload-dropzone:hover,
.upload-dropzone.dragover {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.05);
}
.upload-dropzone-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.4;
}
.upload-preview {
  max-width: 100%;
  max-height: 200px;
  border-radius: var(--radius-sm);
  margin-top: var(--space-md);
}

/* ── Settings / Upload Modal ── */
.settings-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}
.settings-modal {
  max-height: 90vh;
  overflow-y: auto;
}

/* ── Responsive Admin ── */
@media (max-width: 768px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
  .admin-sidebar {
    display: none;
  }
  .admin-main {
    padding: var(--space-lg) var(--space-md);
  }
  .admin-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .admin-header h1 {
    font-size: var(--font-size-lg);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .upload-dropzone {
    padding: var(--space-xl);
  }
  .login-card {
    padding: var(--space-xl);
  }
}

@media (max-width: 500px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .admin-main {
    padding: var(--space-md) var(--space-sm);
  }
}