:root {
  --bg-color: #FAFAFA;
  --panel-bg: #FFFFFF;
  --glass-bg: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(0, 0, 0, 0.06);
  --text-main: #111827;
  --text-muted: #6B7280;
  --accent-color: #111827;
  --accent-hover: #374151;
  --danger-color: #EF4444;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-family: 'Inter', sans-serif;
  --sidebar-w: 320px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
}

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

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

.title {
  color: #374151
}

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  background: none;
  color: var(--text-main);
}

/* Layout */
#app {
  display: flex;
  height: 100vh;
  width: 100vw;
  position: relative;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  background-color: var(--panel-bg);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 50;
}

.sidebar.closed {
  transform: translateX(-100%);
  position: absolute;
  height: 100%;
}

.sidebar-header {
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--glass-border);
}

.sidebar-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.sidebar-content {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.logo-mark {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-main);
}

.logo-mark i {
  color: var(--accent-color);
  font-size: 1.3rem;
}

.sidebar-divider {
  margin: 10px 0 20px;
  border-top: 1px solid var(--glass-border);
}

.editor-entry-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-color);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s;
}

.editor-entry-btn.fluid {
  width: 100%;
}

.editor-entry-btn:hover {
  background: #F3F4F6;
  border-color: #D1D5DB;
}

.editor-entry-arrow {
  margin-left: auto;
  color: var(--text-muted);
}

.settings-group {
  margin-bottom: 24px;
}

.settings-group h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.primary-btn {
  background-color: var(--accent-color);
  color: #FFFFFF;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
  width: auto;
}

.primary-btn.fluid {
  width: 100%;
}

.primary-btn:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.setting-item label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.setting-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.setting-toggle label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

select,
input[type="range"] {
  width: 100%;
  padding: 8px 10px;
  background-color: var(--bg-color);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 0.85rem;
  outline: none;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

select:focus {
  border-color: var(--accent-color);
}

.format-buttons,
.style-buttons {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.format-btn,
.style-btn {
  flex: 1;
  background-color: var(--bg-color);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  transition: all 0.2s;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.2rem;
}

.format-btn:hover,
.style-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.format-btn.active,
.style-btn.active {
  background-color: #F3F4F6;
  border-color: #D1D5DB;
  color: var(--accent-color);
  box-shadow: var(--shadow-sm);
}

.system-audio-status {
  padding: 12px;
  background-color: rgba(0, 0, 0, 0.02);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--glass-border);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.status-indicator.active {
  color: #10B981;
  /* green */
}

.system-audio-status small {
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.4;
}

/* Main Stage */
#main-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  background-image:
    radial-gradient(circle at 50% 10%, rgba(0, 0, 0, 0.02) 0%, transparent 40%);
  background-color: #F3F4F6;
}

#composer-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
  position: relative;
  overflow: hidden;
}

#composer-canvas {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  background-color: transparent;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-sm);
}

/* We create an overlay to handle drag transparently over canvas */
.drag-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  /* Let canvas handle pointer when idle, active only for camera handle if we use DOM */
}

/* Controls Bar */
.controls-bar {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);

  background-color: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  box-shadow: var(--shadow-md);
  z-index: 40;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  font-size: 1.1rem;
  background-color: var(--bg-color);
  border: 1px solid var(--glass-border);
  transition: all 0.2s;
  color: var(--text-main);
}

.icon-btn:hover {
  background-color: #F3F4F6;
}

.record-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.timer {
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
  font-weight: 500;
  min-width: 80px;
  text-align: center;
}

.btn-action {
  background-color: var(--accent-color);
  color: #FFFFFF;
  padding: 8px 16px 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.3s;
}

.btn-action:hover {
  transform: scale(1.05);
}

.record-icon {
  width: 14px;
  height: 14px;
  background-color: var(--danger-color);
  border-radius: 50%;
  transition: all 0.3s;
}

.btn-action.recording .record-icon {
  border-radius: 3px;
  /* Becomes a square when recording for Stop */
}

.btn-action.recording {
  background-color: #FFFFFF;
  color: var(--danger-color);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}

.btn-action.recording:hover {
  background-color: rgba(239, 68, 68, 0.1);
}

.state-hidden {
  display: none !important;
}

/* Toast Container */
#toast-container {
  position: absolute;
  top: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 100;
}

.toast {
  background-color: var(--panel-bg);
  border: 1px solid var(--glass-border);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideIn 0.3s ease forwards;
}

.toast.error {
  border-left: 4px solid var(--danger-color);
}

.toast.success {
  border-left: 4px solid #10B981;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

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

.mt-2 {
  margin-top: 10px;
}

/* ============================================================
   RESPONSIVO (MÓVIL / TABLET)
   ============================================================ */
@media (max-width: 900px) {
  .sidebar {
    position: absolute;
    height: 100%;
    z-index: 100;
    box-shadow: 10px 0 30px rgba(0,0,0,0.5);
  }
}
@media (max-width: 600px) {
  .controls-bar {
    width: 90%;
    bottom: 16px;
    padding: 12px;
  }
  .record-btn {
    padding: 10px 16px;
  }
  .record-controls span {
    font-size: 1.1rem;
  }
  .nle-tutorial-dialog {
    width: 280px;
  }
}

/* ============================================================
   TUTORIAL / ONBOARDING
   ============================================================ */
.nle-tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background-color: rgba(0, 0, 0, 0.7);
  transition: clip-path 0.4s ease-out;
  pointer-events: auto;
}

.nle-tutorial-dialog {
  position: fixed;
  width: 320px;
  background: var(--bg-color);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  transition: top 0.4s ease-out, left 0.4s ease-out;
  color: var(--text-main);
  z-index: 10001;
}

.nle-tutorial-dialog h3 {
  color: var(--accent-color);
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.nle-tutorial-dialog p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 16px;
}

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

.nle-tutorial-btn-alt {
  background: transparent;
  border: none;
  color: #6B7280;
  font-size: 0.85rem;
  cursor: pointer;
  padding: 6px 10px;
}
.nle-tutorial-btn-alt:hover {
  color: #E5E7EB;
  text-decoration: underline;
}

.nle-tutorial-btn-main {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  cursor: pointer;
}
.nle-tutorial-btn-main:hover {
  background: #6366F1;
}