/* StoryStack - Style Sheet (HyperCard for Kids Aesthetic) */

:root {
  --bg-dark: #121826;
  --bg-card-area: #1a202c;
  --panel-bg: #2d3748;
  --panel-border: #4a5568;
  --text-main: #f7fafc;
  --text-muted: #a0aec0;
  --card-canvas-bg: #ffffff;
  --card-canvas-text: #1a202c;

  /* Vibrant Kid-Friendly Accent Colors */
  --primary: #3182ce;
  --primary-hover: #2b6cb0;
  --accent: #d69e2e;
  --accent-hover: #b7791f;
  --success: #38a169;
  --success-hover: #2f855a;
  --warning: #dd6b20;
  --danger: #e53e3e;

  --focus-ring: #63b3ed;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-btn: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
}

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

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

/* SR Only Utility for Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* App Layout Container */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Header Navbar */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--panel-bg);
  border-bottom: 2px solid var(--panel-border);
  padding: 10px 20px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 28px;
}

.app-title {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, #63b3ed 0%, #b794f4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.title-container {
  flex: 1;
  max-width: 400px;
  margin: 0 20px;
}

.stack-title-input {
  width: 100%;
  background-color: var(--bg-dark);
  border: 2px solid var(--panel-border);
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease;
}

.stack-title-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.4);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons System - Minimum 44px target height for accessibility */
.btn {
  min-height: 44px;
  min-width: 44px;
  padding: 0 16px;
  font-size: 15px;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-btn);
  color: #ffffff;
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary { background-color: var(--primary); }
.btn-primary:hover:not(:disabled) { background-color: var(--primary-hover); }

.btn-secondary { background-color: #4a5568; }
.btn-secondary:hover:not(:disabled) { background-color: #718096; }

.btn-accent { background-color: var(--accent); color: #1a202c; }
.btn-accent:hover:not(:disabled) { background-color: var(--accent-hover); }

.btn-success { background-color: var(--success); }
.btn-success:hover:not(:disabled) { background-color: var(--success-hover); }

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

.btn-sm {
  min-height: 36px;
  padding: 0 12px;
  font-size: 13px;
}

.btn-lg {
  min-height: 52px;
  padding: 0 24px;
  font-size: 16px;
  border-radius: 26px;
}

.btn-record-highlight {
  border-color: var(--danger) !important;
  color: #feb2b2 !important;
}

.btn-record-highlight:hover {
  background-color: var(--danger) !important;
  color: #ffffff !important;
}

/* App Workspace Main Layout */
.app-workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebars */
.sidebar {
  width: 240px;
  background-color: var(--panel-bg);
  border-right: 2px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  padding: 16px;
  overflow-y: auto;
}

.sidebar-left {
  width: 170px;
  flex-shrink: 0;
  padding: 12px;
}

.sidebar-right {
  border-right: none;
  border-left: 2px solid var(--panel-border);
}

.sidebar-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 16px;
}

.sidebar-header h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Card Thumbnails List */
.thumbnails-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.thumbnail-item {
  position: relative;
  background-color: var(--bg-dark);
  border: 3px solid var(--panel-border);
  border-radius: var(--radius-md);
  padding: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.thumbnail-item:hover {
  border-color: var(--primary);
  transform: scale(1.02);
}

.thumbnail-item.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(214, 158, 46, 0.4);
}

.thumbnail-label {
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  color: var(--text-muted);
}

/* Center Canvas Area */
.canvas-area {
  flex: 1;
  background-color: var(--bg-card-area);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 20px;
  overflow: auto;
  position: relative;
}

/* Editor Tool Palette Toolbar */
.editor-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  width: 100%;
  max-width: 1100px;
  background-color: var(--panel-bg);
  border: 2px solid var(--panel-border);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  margin-bottom: 10px;
  gap: 8px 12px;
}

.tool-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.tool-btn {
  min-height: 34px;
  padding: 0 10px;
  font-size: 13px;
  font-weight: 700;
  background-color: var(--bg-dark);
  color: var(--text-main);
  border: 2px solid var(--panel-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.tool-btn:hover {
  border-color: var(--primary);
  background-color: #2c3748;
}

.tool-btn.active {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.tool-options {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  background-color: var(--bg-dark);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.tool-options input, .tool-options select {
  background-color: var(--panel-bg);
  color: var(--text-main);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  padding: 4px 8px;
}

.swatch-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.swatch-btn {
  width: 22px;
  height: 22px;
  padding: 0;
  border-radius: 5px;
  border: 2px solid var(--panel-border);
  cursor: pointer;
}

.swatch-btn:hover {
  border-color: var(--primary);
  transform: scale(1.1);
}

.sticker-btn {
  font-size: 22px;
  line-height: 1;
  padding: 4px 8px;
  background-color: var(--panel-bg);
  border: 2px solid var(--panel-border);
  border-radius: 6px;
  cursor: pointer;
}

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

.sticker-btn.active {
  border-color: var(--primary);
  background-color: #2c3748;
}

/* Canvas Container */
.canvas-container {
  position: relative;
  width: 800px;
  height: 600px;
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--card-canvas-bg);
}

#card-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
  /* Without this, a touch-drag to draw/move an object also scrolls/zooms
     the page on tablets -- the browser can't tell those apart otherwise. */
  touch-action: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

/* Card navigation transitions -- toggled briefly by goToCard() in app.js,
   the class is added then removed so the canvas fades/slides out and,
   after the content swap, back in. */
#card-canvas.nav-fade {
  opacity: 0;
}

#card-canvas.nav-slide {
  opacity: 0;
  transform: translateX(24px);
}

/* Remote Cursors Layer */
.remote-cursors-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.remote-cursor {
  position: absolute;
  transform: translate(-2px, -2px);
  transition: left 0.08s ease-out, top 0.08s ease-out;
  z-index: 100;
}

.cursor-pointer {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid #ffffff;
  box-shadow: 0 2px 5px rgba(0,0,0,0.4);
}

.cursor-label {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
  color: #ffffff;
  white-space: nowrap;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* Collaborators & Comments */
.sidebar-section {
  margin-bottom: 24px;
}

.sidebar-section h2 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.collaborators-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.collaborator-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--bg-dark);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
}

.user-badge {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.comments-placeholder {
  background-color: var(--bg-dark);
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Play Mode Styling */
.mode-play .sidebar-left,
.mode-play .sidebar-right,
.mode-play .editor-toolbar,
.mode-play .app-header {
  display: none !important;
}

.mode-play .canvas-area {
  padding: 0;
  justify-content: center;
  background-color: #0d1117;
}

.play-mode-overlay {
  position: absolute;
  bottom: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(45, 55, 72, 0.85);
  backdrop-filter: blur(8px);
  padding: 10px 18px;
  border-radius: 30px;
  border: 1px solid var(--panel-border);
  z-index: 200;
}

.play-nav-hint {
  font-size: 13px;
  color: var(--text-main);
  font-weight: 600;
}

/* Toast Notifications */
.toast-notification {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--panel-bg);
  border: 2px solid var(--primary);
  color: var(--text-main);
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  z-index: 1000;
  pointer-events: none;
}

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

/* Modal Dialog Styling */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.modal-content {
  background-color: var(--panel-bg);
  border: 2px solid var(--panel-border);
  border-radius: var(--radius-lg);
  width: 440px;
  max-width: 90vw;
  box-shadow: 0 20px 40px rgba(0,0,0,0.6);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background-color: var(--bg-dark);
  border-bottom: 2px solid var(--panel-border);
}

.modal-header h2 {
  font-size: 18px;
  font-weight: 800;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.template-choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.template-choice-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 12px;
  background-color: var(--bg-dark);
  border: 2px solid var(--panel-border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.template-choice-btn:hover {
  border-color: var(--primary);
  background-color: #2c3748;
}

.template-choice-icon {
  font-size: 32px;
}

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

.badge {
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
}

.badge-ready { background-color: #2b6cb0; color: #ffffff; }
.badge-recording { background-color: var(--danger); color: #ffffff; animation: pulse 1.5s infinite; }
.badge-done { background-color: var(--success); color: #ffffff; }

.my-stacks-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 50vh;
  overflow-y: auto;
}

.my-stacks-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background-color: var(--bg-dark);
  border: 2px solid var(--panel-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.my-stacks-item:hover {
  border-color: var(--primary);
}

.my-stacks-title {
  font-weight: 700;
}

.my-stacks-meta {
  font-size: 12px;
  color: var(--text-muted);
}

@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.5; }
  100% { opacity: 1; }
}

.audio-timer {
  font-size: 18px;
  font-weight: 800;
  font-family: monospace;
  color: var(--accent);
}

.level-meter-container {
  background-color: var(--bg-dark);
  border: 2px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 6px;
  display: flex;
  justify-content: center;
}

#audio-level-canvas {
  width: 100%;
  height: 24px;
  display: block;
}

.audio-preview-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.audio-preview-container audio {
  width: 100%;
}

.audio-label-input {
  width: 100%;
  background-color: var(--bg-dark);
  border: 1px solid var(--panel-border);
  color: var(--text-main);
  font-size: 14px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 10px;
}