/* ============================================
   Beamer Presenter - Main Styles
   Modern dark theme with glassmorphism
   ============================================ */

/* System fonts - no external dependencies for offline use */

/* CSS Custom Properties */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0d0d1a;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #16213e;
  --bg-elevated: #0f3460;

  /* Glass effect */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

  /* Accent color - single solid color */
  --accent-color: #3b82f6;


  /* Text */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.4);

  /* Status colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);

  /* Z-index scale */
  --z-base: 1;
  --z-dropdown: 10;
  --z-overlay: 50;
  --z-modal: 100;
  --z-toast: 200;
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-column {
  flex-direction: column;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1rem;
}

.text-sm {
  font-size: 0.875rem;
}

.text-xs {
  font-size: 0.75rem;
}

.text-muted {
  color: var(--text-muted);
}

.text-secondary {
  color: var(--text-secondary);
}

/* Glass Panel */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--accent-color);
  border: none;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: #2563eb;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

/* Input */
.input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-normal);
}

.input:focus {
  border-color: var(--accent-start);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.input::placeholder {
  color: var(--text-muted);
}

/* Select */
.select {
  padding: var(--spacing-sm) var(--spacing-md);
  padding-right: var(--spacing-xl);
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: all var(--transition-normal);
}

.select:focus {
  border-color: var(--accent-start);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Drop Zone */
.drop-zone {
  position: relative;
  padding: var(--spacing-2xl);
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent-start);
  background: rgba(102, 126, 234, 0.1);
}

.drop-zone.dragover {
  transform: scale(1.02);
}

.drop-zone-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.6;
}

.drop-zone-text {
  color: var(--text-secondary);
}

.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* Divider */
.divider {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--glass-border);
}

/* Collapsible */
.collapsible-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  user-select: none;
  transition: color var(--transition-fast);
}

.collapsible-header:hover {
  color: var(--text-primary);
}

.collapsible-header .icon {
  transition: transform var(--transition-fast);
}

.collapsible-header.open .icon {
  transform: rotate(90deg);
}

.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.collapsible-content.open {
  max-height: 500px;
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.status-badge.connected {
  color: var(--success);
  background: rgba(16, 185, 129, 0.1);
}

.status-badge.disconnected {
  color: var(--error);
  background: rgba(239, 68, 68, 0.1);
}

.status-badge.waiting {
  color: var(--warning);
  background: rgba(245, 158, 11, 0.1);
}

/* Toast / Notification */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: var(--z-toast);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.error {
  border-color: var(--error);
}

.toast.success {
  border-color: var(--success);
}

/* Canvas Container */
.canvas-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.canvas-container canvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.animate-fade-in {
  animation: fadeIn var(--transition-normal) ease forwards;
}

.animate-slide-up {
  animation: slideUp var(--transition-slow) ease forwards;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Laser Pointer */
.laser-pointer {
  position: absolute;
  width: 16px;
  height: 16px;
  background: radial-gradient(circle, #ff0000 0%, #ff0000 40%, rgba(255, 0, 0, 0.6) 60%, transparent 70%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: var(--z-modal);
  box-shadow:
    0 0 8px 2px rgba(255, 0, 0, 0.8),
    0 0 16px 4px rgba(255, 0, 0, 0.4);
}

/* Presenter preview needs position:relative for pointer positioning */
.preview-canvas-wrapper {
  position: relative;
}

/* Audience canvas wrapper needs position:relative for pointer positioning */
.audience-canvas-wrapper {
  position: relative;
}

/* Reduced Motion Preference */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}