/* Global Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --bg-color: #f3f4f6;
  --sidebar-bg: #1e293b;
  --sidebar-text: #e2e8f0;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --danger: #ef4444;
  --success: #10b981;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Typography */
h1, h2, h3 { color: var(--text-main); }
a { text-decoration: none; color: inherit; }

/* Login Page Specific */
.login-container {
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-color);
}

.login-card {
  background-color: var(--card-bg);
  padding: 2.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  width: 100%;
  max-width: 400px;
}

.login-card h2 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 0.375rem;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  width: 100%;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-danger {
  background-color: var(--danger);
  color: white;
}

/* Sidebar Layout */
.sidebar {
  width: 250px;
  background-color: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 1.5rem;
  font-size: 1.25rem;
  font-weight: bold;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
}

.nav-item {
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--sidebar-text);
  opacity: 0.8;
  transition: all 0.2s;
}

.nav-item:hover, .nav-item.active {
  opacity: 1;
  background-color: rgba(255,255,255,0.05);
  border-left: 3px solid var(--primary);
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  height: 64px;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
}

.content-wrapper {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
}

/* Dashboard Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.stat-title {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary);
}

/* Media Grid */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.media-card {
  background-color: var(--card-bg);
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
}

.media-preview {
  height: 160px;
  background-color: #eee;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.media-preview img, .media-preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-info {
  padding: 1rem;
  flex: 1;
}

.media-tag {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.media-path {
  font-size: 0.75rem;
  color: var(--text-muted);
  word-break: break-all;
  margin-bottom: 1rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--card-bg);
  width: 100%;
  max-width: 500px;
  border-radius: 0.5rem;
  padding: 1.5rem;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
}

/* Utility */
.d-none { display: none !important; }
.flex { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem;}
.mb-1 { margin-bottom: 1rem; }