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

:root {
  --bg: #1a1a2e;
  --bg-light: #16213e;
  --bg-card: #1f2b47;
  --text: #e0e0e0;
  --text-muted: #8892a4;
  --primary: #e94560;
  --primary-hover: #d63851;
  --accent: #533483;
  --border: #2a3a5c;
  --success: #27ae60;
  --danger: #e74c3c;
}

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

.hidden { display: none !important; }

/* Login */
.login-box {
  max-width: 360px;
  margin: 15vh auto;
  text-align: center;
  padding: 2rem;
}
.logo { max-width: 200px; margin-bottom: 1rem; }
.login-box h1 { font-size: 1.2rem; color: var(--text-muted); margin-bottom: 2rem; }
.login-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-light);
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 1rem;
}
.login-box button {
  width: 100%;
  padding: 0.75rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
}
.login-box button:hover { background: var(--primary-hover); }
.error { color: var(--danger); margin-top: 0.5rem; font-size: 0.9rem; }

/* Header */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 0.5rem;
}
.header-left { display: flex; align-items: center; gap: 0.75rem; }
.header-logo { height: 32px; }
.header-title { font-weight: 600; font-size: 1.1rem; }
nav { display: flex; gap: 0.25rem; }
.nav-btn {
  padding: 0.5rem 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 6px;
  font-size: 0.9rem;
}
.nav-btn.active, .nav-btn:hover {
  background: var(--bg-card);
  color: var(--text);
}

/* Buttons */
.btn-primary {
  padding: 0.5rem 1.25rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary {
  padding: 0.5rem 1.25rem;
  background: var(--bg-light);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-secondary:hover { background: var(--bg-card); }
.btn-text {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-text:hover { color: var(--text); }
.btn-danger {
  padding: 0.35rem 0.75rem;
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
}

/* Views */
.view { padding: 1.5rem; max-width: 1200px; margin: 0 auto; }
.view-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.view h2 { margin-bottom: 1.5rem; }

/* Dashboard */
.monitor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}
.monitor-card {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 1.25rem;
  border: 1px solid var(--border);
}
.monitor-card h3 { margin-bottom: 0.75rem; display: flex; justify-content: space-between; align-items: center; }
.monitor-card .status {
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
}
.status-active { background: var(--success); color: white; }
.status-inactive { background: var(--border); color: var(--text-muted); }
.monitor-card select {
  width: 100%;
  padding: 0.5rem;
  background: var(--bg-light);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-top: 0.5rem;
  font-size: 0.9rem;
}
.monitor-url {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  word-break: break-all;
}
.monitor-url a { color: var(--primary); text-decoration: none; }
.monitor-url a:hover { text-decoration: underline; }
.copy-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  margin-left: 0.5rem;
}
.copy-btn:hover { color: var(--text); }

/* Playlist Grid */
.playlist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.playlist-card {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 1.25rem;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.2s;
}
.playlist-card:hover { border-color: var(--primary); }
.playlist-card h3 { margin-bottom: 0.5rem; }
.playlist-card .meta { color: var(--text-muted); font-size: 0.85rem; }
.playlist-card-actions { display: flex; gap: 0.5rem; margin-top: 0.75rem; }

/* Editor */
.editor-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.editor-header h3 { flex: 1; }
.editor-actions { display: flex; align-items: center; gap: 1rem; }
.input-small {
  width: 60px;
  padding: 0.3rem 0.5rem;
  background: var(--bg-light);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-align: center;
}

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  transition: border-color 0.2s;
}
.upload-zone.dragover { border-color: var(--primary); background: rgba(233, 69, 96, 0.05); }
.file-label { color: var(--primary); cursor: pointer; text-decoration: underline; }

/* Slide Grid */
.slide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}
.slide-card {
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
  cursor: grab;
}
.slide-card.dragging { opacity: 0.5; }
.slide-card .slide-thumb {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
  background: #000;
}
.slide-card .slide-info {
  padding: 0.5rem 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}
.slide-card .slide-info span { color: var(--text-muted); }
.slide-actions { display: flex; gap: 0.35rem; }
.slide-actions button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0.1rem 0.3rem;
}
.slide-actions button:hover { color: var(--text); }
.slide-overlay-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: rgba(0,0,0,0.7);
  color: var(--text);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.7rem;
}
.video-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(0,0,0,0.7);
  color: var(--text);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.7rem;
}

/* Monitor Config */
.monitor-config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.25rem;
}
.monitor-config-card {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 1.5rem;
  border: 1px solid var(--border);
}
.monitor-config-card h3 { margin-bottom: 1rem; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.3rem; }
.form-group input, .form-group select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  background: var(--bg-light);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
}
.form-row { display: flex; gap: 1rem; }
.form-row .form-group { flex: 1; }

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal-content {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 1.5rem;
  width: 90%;
  max-width: 480px;
  border: 1px solid var(--border);
}
.modal-content h3 { margin-bottom: 1rem; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

/* Preview */
.preview-content {
  position: relative;
  width: 90vw;
  height: 80vh;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
}
.preview-close-btn {
  position: absolute;
  top: 10px;
  right: 15px;
  z-index: 10;
  background: rgba(0,0,0,0.6);
  color: white;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
#preview-container {
  width: 100%;
  height: 100%;
  position: relative;
}
#preview-container img, #preview-container video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Responsive */
@media (max-width: 600px) {
  header { padding: 0.5rem; }
  nav { order: 3; width: 100%; justify-content: center; }
  .view { padding: 1rem; }
  .editor-header { flex-direction: column; align-items: flex-start; }
  .slide-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .form-row { flex-direction: column; gap: 0; }
}