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

:root {
  --bg-dark: #1a1a2e;
  --bg-card: #16213e;
  --bg-sidebar: #0f3460;
  --accent: #e94560;
  --accent-hover: #c73e54;
  --text: #eee;
  --text-muted: #aaa;
  --success: #2ecc71;
  --border: #2a2a4a;
  --input-bg: #1e2a45;
}

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

/* LOGIN PAGE */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  padding: 40px;
  border-radius: 12px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.login-card h1 {
  text-align: center;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 28px;
}

.login-card .subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 30px;
}

/* LAYOUT */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 250px;
  background: var(--bg-sidebar);
  padding: 20px 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-logo {
  padding: 0 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 10px;
}

.sidebar-logo h2 {
  color: var(--accent);
  font-size: 22px;
}

.sidebar-logo span {
  color: var(--text-muted);
  font-size: 12px;
}

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

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: var(--text);
  text-decoration: none;
  transition: background 0.2s;
  font-size: 15px;
}

.sidebar nav a:hover,
.sidebar nav a.active {
  background: rgba(255,255,255,0.1);
}

.sidebar nav a.active {
  border-left: 3px solid var(--accent);
}

.sidebar-footer {
  padding: 15px 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-footer button {
  background: none;
  border: 1px solid var(--text-muted);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
  font-size: 14px;
}

.sidebar-footer button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.main-content {
  margin-left: 250px;
  flex: 1;
  padding: 30px;
}

/* HEADER */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

.page-header h1 {
  font-size: 26px;
}

/* BUTTONS */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s;
}

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

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

.btn-secondary {
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
}

.btn-danger {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

/* FORMS */
.form-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

.form-overlay.active {
  display: flex;
}

.form-card {
  background: var(--bg-card);
  padding: 30px;
  border-radius: 12px;
  width: 100%;
  max-width: 550px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.form-card h2 {
  margin-bottom: 20px;
  color: var(--accent);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-group input[type="file"] {
  padding: 8px;
}

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}

.photo-preview {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin-top: 8px;
}

.poster-preview {
  max-width: 200px;
  max-height: 150px;
  border-radius: 8px;
  object-fit: cover;
  margin-top: 8px;
}

/* CARDS GRID */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-2px);
}

.card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--input-bg);
}

.card-body {
  padding: 16px;
}

.card-body h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

.card-body p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 4px;
}

.card-body .bio {
  margin: 8px 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-actions {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.tag {
  background: var(--bg-sidebar);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

/* STATS */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--bg-card);
  padding: 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.stat-card .number {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
}

.stat-card .label {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* ARTIST CHECKBOXES */
.artists-checkboxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  max-height: 200px;
  overflow-y: auto;
  padding: 8px;
  background: var(--input-bg);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.artists-checkboxes label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
}

/* ALERT */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
}

.alert-success {
  background: rgba(46,204,113,0.15);
  color: var(--success);
  border: 1px solid rgba(46,204,113,0.3);
}

.alert-error {
  background: rgba(233,69,96,0.15);
  color: var(--accent);
  border: 1px solid rgba(233,69,96,0.3);
}

/* NO DATA */
.no-data {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.no-data p {
  font-size: 16px;
  margin-bottom: 16px;
}

/* MOBILE TOGGLE */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  color: var(--text);
  width: 44px;
  height: 44px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 22px;
  align-items: center;
  justify-content: center;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .sidebar-toggle {
    display: flex;
  }

  .sidebar {
    width: 260px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 150;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 140;
  }

  .sidebar-backdrop.active {
    display: block;
  }

  .main-content {
    margin-left: 0;
    padding: 70px 16px 24px;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .page-header h1 {
    font-size: 22px;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .form-card {
    margin: 10px;
    padding: 20px;
    max-width: 100%;
  }

  .form-group[style*="grid-template-columns"] {
    display: flex !important;
    flex-direction: column;
  }

  .card-actions {
    flex-wrap: wrap;
  }

  .artists-checkboxes {
    grid-template-columns: 1fr;
  }

  .login-card {
    padding: 28px 20px;
  }
}