/* ==========================================================================
   TypeGuru Main Application Stylesheet
   3-Column Workspace matching Desktop Typing Tutor
   ========================================================================== */

:root, [data-theme="light"] {
  --bg-main: #f1f5f9;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --border-color: #cbd5e1;
  --border-subtle: #e2e8f0;
  --primary: #2563eb;
  --primary-glow: rgba(37, 99, 235, 0.25);
  --primary-light: #3b82f6;
  --accent: #0284c7;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-heading: #0f172a;
  --admin-bg: #f8fafc;
  --admin-sidebar-bg: #1e293b;
  --admin-sidebar-text: #f8fafc;
  --admin-sidebar-muted: #94a3b8;
  --table-header-bg: #f1f5f9;
  --table-header-text: #334155;
  --table-row-border: #e2e8f0;
  --table-row-hover: #f8fafc;
  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --input-text: #0f172a;
  --modal-bg: #ffffff;
  --modal-text: #0f172a;
  --modal-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius: 12px;

  /* Classic desktop tutor aesthetics in light mode */
  --tutor-bg: #a0a6b2;
  --groupbox-bg: #d4d8e0;
  --groupbox-border: #858b99;
  --groupbox-legend: #1e293b;
  --sub-groupbox-bg: #e3e7ee;
  --sub-groupbox-border: #9ca3b0;
  --sub-groupbox-legend: #334155;
  --arena-card-bg: #8e9ecb;
  --arena-card-border: #7584b2;
  --dualbox-bg: #ffffff;
  --dualbox-text: #111827;
  --dualbox-border: #475569;
  --toolbar-bg: #8e9ecb;
  --toolbtn-bg: #e2e8f0;
  --toolbtn-text: #1e293b;
  --toolbtn-border: #64748b;
  --hud-bg: #1e293b;
  --hud-card-bg: #0f172a;
  --hud-value: #ffffff;
  --hud-label: #94a3b8;
  --hand-fill: #a2b2df;
  --hand-stroke: #1e293b;
  --workflow-bar-bg: #eef2f7;
  --workflow-bar-border: #cbd5e1;
  --workflow-btn-bg: #ffffff;
  --workflow-btn-border: #94a3b8;
  --workflow-btn-text: #1e293b;
  --workflow-btn-active-bg: #8e9ecb;
  --workflow-btn-active-border: #6879a8;
  --workflow-btn-active-text: #ffffff;
  --workflow-arrow-color: #64748b;
}

[data-theme="dark"] {
  --bg-main: #0b0f19;
  --bg-surface: #111827;
  --bg-card: #1e293b;
  --bg-card-hover: #27354f;
  --border-color: rgba(255, 255, 255, 0.12);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --primary: #3b82f6;
  --primary-glow: rgba(59, 130, 246, 0.4);
  --primary-light: #60a5fa;
  --accent: #38bdf8;
  --success: #10b981;
  --error: #f87171;
  --warning: #fbbf24;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-heading: #f8fafc;
  --admin-bg: #0b0f19;
  --admin-sidebar-bg: #070a12;
  --admin-sidebar-text: #f8fafc;
  --admin-sidebar-muted: #94a3b8;
  --table-header-bg: #111827;
  --table-header-text: #94a3b8;
  --table-row-border: rgba(255, 255, 255, 0.07);
  --table-row-hover: rgba(255, 255, 255, 0.04);
  --input-bg: #0f172a;
  --input-border: #334155;
  --input-text: #f8fafc;
  --modal-bg: #111827;
  --modal-text: #f8fafc;
  --modal-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);

  /* Tutor arena dark mode */
  --tutor-bg: #090d16;
  --groupbox-bg: #161f30;
  --groupbox-border: #293548;
  --groupbox-legend: #93c5fd;
  --sub-groupbox-bg: #0e1524;
  --sub-groupbox-border: #232d3f;
  --sub-groupbox-legend: #cbd5e1;
  --arena-card-bg: #1a2333;
  --arena-card-border: #2d3d5a;
  --dualbox-bg: #0b0f19;
  --dualbox-text: #f8fafc;
  --dualbox-border: #2d3d5a;
  --toolbar-bg: #1a2333;
  --toolbtn-bg: #26334d;
  --toolbtn-text: #f8fafc;
  --toolbtn-border: #3b4d70;
  --hud-bg: #0e1524;
  --hud-card-bg: #070a12;
  --hud-value: #f8fafc;
  --hud-label: #94a3b8;
  --hand-fill: #1e293b;
  --hand-stroke: #475569;
  --workflow-bar-bg: #0f172a;
  --workflow-bar-border: #1e293b;
  --workflow-btn-bg: #1e293b;
  --workflow-btn-border: #334155;
  --workflow-btn-text: #e2e8f0;
  --workflow-btn-active-bg: #2563eb;
  --workflow-btn-active-border: #3b82f6;
  --workflow-btn-active-text: #ffffff;
  --workflow-arrow-color: #94a3b8;
}

@font-face {
  font-family: 'Kruti Dev 010';
  src: url('/assets/fonts/Kruti_Dev_010.ttf') format('truetype'),
       local('Kruti Dev 010'),
       local('KrutiDev 010'),
       local('KrutiDev'),
       local('DV-TTSurekh');
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: 'Mangal';
  src: local('Mangal'), local('Noto Sans Devanagari'), local('Aparajita'), local('Utsaah');
  font-weight: normal;
  font-style: normal;
}

/* Universal Font Utility Classes */
.kruti-font {
  font-family: 'Kruti Dev 010', 'KrutiDev', 'DV-TTSurekh', sans-serif !important;
}

.mangal-font {
  font-family: 'Mangal', 'Noto Sans Devanagari', 'Aparajita', sans-serif !important;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* --- Top Navigation --- */
.navbar {
  background: #111827;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.6rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-logo .logo-icon {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.brand-logo .hindi-sub {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  margin-left: 2px;
}

/* Language & Layout Selector Pills */
.nav-selectors {
  display: flex;
  background: #1f293d;
  padding: 0.2rem;
  border-radius: 8px;
  gap: 0.2rem;
}

.selector-btn {
  background: transparent;
  border: none;
  color: #94a3b8;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.selector-btn:hover {
  color: #fff;
}

.selector-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--primary-glow);
}

/* Nav Right: Status badges and user */
.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
}

.status-badge.online {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-badge.offline {
  background: rgba(239, 68, 68, 0.15);
  color: var(--error);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.status-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: #1d4ed8;
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
}

.btn-outline {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
  color: var(--text-heading);
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 600;
  user-select: none;
}

.navbar .theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.navbar .theme-toggle-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
  color: var(--text-heading);
  transform: translateY(-1px);
}

.admin-header .theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.admin-header .theme-toggle-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
  transform: translateY(-1px);
}

.user-avatar-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.user-avatar-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
  color: var(--text-heading);
}

/* User Profile Info Card in Modal */
.profile-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
  border-radius: 10px;
  color: var(--text-main);
  box-shadow: var(--card-shadow);
}

.profile-info-card p {
  margin: 0.45rem 0;
  font-size: 0.9rem;
  color: var(--text-main);
}

.profile-info-card strong {
  color: var(--text-heading);
}

/* --- Real-Time HUD Bar Strip --- */
.hud-bar-container {
  width: 100%;
  background: var(--hud-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 0.4rem 1rem;
  display: flex;
  justify-content: center;
  transition: background-color 0.2s ease;
}

.hud-bar {
  width: 100%;
  max-width: 1000px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.75rem;
}

.hud-card {
  background: var(--hud-card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.4rem 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background-color 0.2s ease;
}

.hud-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--hud-label);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hud-value {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--hud-value);
  font-variant-numeric: tabular-nums;
}

.hud-unit {
  font-size: 0.68rem;
  color: var(--hud-label);
  font-weight: 500;
  margin-left: 2px;
}

/* ==========================================================================
   4-Stage Progressive Workflow Navigation Bar
   ========================================================================== */
.tutor-workflow-wrapper {
  width: 100%;
  background: var(--workflow-bar-bg);
  border-bottom: 1.5px solid var(--workflow-bar-border);
  display: flex;
  justify-content: center;
  padding: 0.35rem 1rem;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.tutor-workflow-bar {
  width: 100%;
  max-width: 1440px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.workflow-step-btn {
  background: var(--workflow-btn-bg);
  border: 1px solid var(--workflow-btn-border);
  color: var(--workflow-btn-text);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.35rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
  white-space: nowrap;
}

.workflow-step-btn:hover {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

.workflow-step-btn.active {
  background: var(--workflow-btn-active-bg);
  border: 1.5px solid var(--workflow-btn-active-border);
  color: var(--workflow-btn-active-text);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.workflow-arrow {
  color: var(--workflow-arrow-color);
  font-family: monospace;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: -1px;
  user-select: none;
  opacity: 0.85;
}

@media (max-width: 768px) {
  .tutor-workflow-bar {
    flex-wrap: wrap;
    justify-content: center;
  }
  .workflow-arrow {
    display: none;
  }
}

/* ==========================================================================
   Instructions Panel
   ========================================================================== */
.instructions-panel {
  background: var(--dualbox-bg);
  border: 1.5px solid var(--dualbox-border);
  border-radius: 4px;
  padding: 1.25rem;
  max-height: 480px;
  overflow-y: auto;
  color: var(--dualbox-text);
  box-shadow: inset 1px 1px 3px rgba(0, 0, 0, 0.15);
  animation: fadeIn 0.2s ease;
}

.instructions-header {
  border-bottom: 1.5px solid var(--border-color);
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
  text-align: center;
}

.instructions-header h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading);
}

.instructions-header p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.instructions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 900px) {
  .instructions-grid {
    grid-template-columns: 1fr;
  }
}

.instruction-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  box-shadow: var(--card-shadow);
}

.instruction-box h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.6rem;
}

.instruction-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: var(--text-main);
}

.instruction-box code {
  background: rgba(37, 99, 235, 0.12);
  color: var(--primary);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-weight: 700;
}

.instructions-footer {
  display: flex;
  justify-content: center;
  margin-top: 1rem;
}

/* ==========================================================================
   Tutor Main Workspace: 3-Column Layout
   ========================================================================== */
.tutor-workspace-root {
  flex: 1;
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  background-color: var(--tutor-bg);
  transition: background-color 0.2s ease;
}

.tutor-stage-layout {
  display: grid;
  grid-template-columns: 210px minmax(500px, 1fr) 230px;
  gap: 1.25rem;
  width: 100%;
  max-width: 1440px;
  align-items: start;
}

/* --- Left & Right Side Columns --- */
.side-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: stretch;
}

/* Groupbox Frames matching classic tutor desktop aesthetic */
.tutor-groupbox {
  border: 1.5px solid var(--groupbox-border);
  background: var(--groupbox-bg);
  border-radius: 5px;
  padding: 0.5rem 0.75rem 0.75rem 0.75rem;
  box-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.4), 0 2px 5px rgba(0, 0, 0, 0.1);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.groupbox-legend {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--groupbox-legend);
  padding: 0 0.4rem;
  letter-spacing: 0.01em;
}

.groupbox-inner {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sub-groupbox {
  border: 1px solid var(--sub-groupbox-border);
  background: var(--sub-groupbox-bg);
  border-radius: 4px;
  padding: 0.4rem 0.6rem;
  margin-bottom: 0.4rem;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.sub-groupbox-legend {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--sub-groupbox-legend);
  padding: 0 0.3rem;
}

.tutor-checkbox-label,
.tutor-radio-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--groupbox-legend);
  cursor: pointer;
  user-select: none;
  margin: 0.2rem 0;
}

.tutor-checkbox-label input,
.tutor-radio-label input {
  cursor: pointer;
  accent-color: var(--primary);
  width: 14px;
  height: 14px;
}

.tutor-font-select {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--sub-groupbox-border);
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--input-bg);
  color: var(--input-text);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.checkbox-options-list,
.radio-options-list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

/* ==========================================================================
   Center Column: Lavender Canvas with Dual Boxes & Toolbar
   ========================================================================== */
.center-arena-column {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.lavender-arena-card {
  background: var(--arena-card-bg);
  border: 2px solid var(--arena-card-border);
  border-radius: 4px;
  padding: 0.65rem;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  position: relative;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

/* Hidden input for keystrokes - optimized for Desktop & Mobile Soft Keyboards */
.hidden-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.0001;
  z-index: 5;
  cursor: text;
  font-size: 16px; /* Prevents auto-zoom on iOS Safari */
  border: none;
  background: transparent;
  color: transparent;
  caret-color: transparent;
  outline: none;
  pointer-events: auto;
}

/* Dual Box Displays (Top Reference Box & Bottom Typing Box) */
.dualbox-display {
  background: var(--dualbox-bg);
  border: 1.5px solid var(--dualbox-border);
  border-radius: 2px;
  padding: 0.75rem 1rem;
  min-height: 180px;
  max-height: 220px;
  overflow-y: auto;
  line-height: 1.8;
  letter-spacing: 0.025em;
  color: var(--dualbox-text);
  font-size: 26px;
  word-break: break-word;
  white-space: pre-wrap;
  user-select: none;
  cursor: text;
  box-shadow: inset 1px 1px 3px rgba(0, 0, 0, 0.2);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.dualbox-display:focus {
  outline: 2px solid var(--primary);
}

/* Top Reference Text Highlight */
.char-target-item {
  position: relative;
}

/* Inverted Cursor on Active Target Character / Word */
.char-target-inverted {
  background: #000000 !important;
  color: #ffffff !important;
  font-weight: 700;
  border-radius: 3px;
  padding: 1px 3px;
}

[data-theme="dark"] .char-target-inverted {
  background: #2563eb !important;
  color: #ffffff !important;
}

.char-target-word {
  display: inline-block;
  white-space: pre;
}

.char-target-word.char-target-inverted {
  background: #000000 !important;
  color: #ffffff !important;
  border-radius: 3px;
  padding: 1px 4px;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .char-target-word.char-target-inverted {
  background: #2563eb !important;
  color: #ffffff !important;
  box-shadow: 0 0 4px rgba(37, 99, 235, 0.7);
}

.char-space-active {
  background: #000000 !important;
  color: #ffffff !important;
  border-radius: 2px;
}

[data-theme="dark"] .char-space-active {
  background: #2563eb !important;
  color: #ffffff !important;
}

.char-flash-error {
  animation: flashRed 0.2s ease;
}

@keyframes flashRed {
  0% { background: #ef4444 !important; color: #fff !important; }
  100% { background: #000 !important; color: #fff !important; }
}

/* Bottom User Typed Text */
.char-typed-correct {
  color: var(--dualbox-text);
}

.char-typed-error {
  color: #dc2626 !important;
  font-weight: bold;
  background: rgba(220, 38, 38, 0.15);
  border-radius: 2px;
}

/* Blinking Cursor in bottom typing box (Pure CSS bar, NEVER depends on font!) */
.cursor-line {
  display: inline-block;
  width: 2.5px;
  height: 1.15em;
  background-color: var(--dualbox-text);
  vertical-align: -0.15em;
  animation: blinkCursor 0.9s infinite alternate;
  margin-left: 2px;
  margin-right: 2px;
  border-radius: 1px;
}

[data-theme="dark"] .cursor-line {
  background-color: #60a5fa;
}

@keyframes blinkCursor {
  0% { opacity: 1; }
  49% { opacity: 1; }
  50% { opacity: 0; }
  100% { opacity: 0; }
}

/* Middle Toolbar Bar */
.middle-toolbar-bar {
  background: var(--toolbar-bg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.2rem 0.4rem;
  transition: background-color 0.2s ease;
  position: relative;
  z-index: 15;
}

.nav-control-left,
.nav-control-right {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tool-btn {
  background: var(--toolbtn-bg);
  border: 1px solid var(--toolbtn-border);
  border-radius: 3px;
  padding: 0.2rem 0.65rem;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--toolbtn-text);
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  transition: all 0.15s ease;
}

.tool-btn:hover {
  filter: brightness(0.92);
}

.tool-btn:active {
  transform: translateY(1px);
}

.exercise-picker-select {
  background: var(--dualbox-bg);
  border: 1px solid var(--toolbtn-border);
  border-radius: 3px;
  padding: 0.25rem 0.65rem;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--dualbox-text);
  cursor: pointer;
  min-width: 150px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.font-size-label {
  font-weight: 800;
  font-size: 0.95rem;
  color: #ffffff;
  padding: 0 0.35rem;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  min-width: 24px;
  text-align: center;
}

/* ==========================================================================
   Modals & Notifications
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1.5rem;
  animation: fadeIn 0.2s ease-out;
}

.modal-content {
  background: var(--modal-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  position: relative;
  box-shadow: var(--modal-shadow);
  color: var(--text-main);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.modal-content h2,
.modal-content h3 {
  color: var(--text-heading);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.7rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover { color: var(--text-heading); }

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.auth-tab {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.auth-tab.active {
  color: var(--primary-light);
  border-bottom-color: var(--primary-light);
}

.form-group {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-control {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
  color: var(--input-text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Subscription Plans Modal Grid */
.subscription-modal { max-width: 960px; }
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--card-shadow);
  color: var(--text-main);
  transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
}

.plan-card h3,
.plan-header h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-heading);
}

.plan-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-light);
  box-shadow: 0 12px 25px -5px rgba(0, 0, 0, 0.2);
}

.plan-card.popular-plan {
  border: 2px solid var(--primary);
  background: var(--bg-card);
}

.popular-badge {
  position: absolute;
  top: -12px;
  right: 15px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
}

.plan-duration { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.8rem; }
.plan-price { font-size: 1.8rem; font-weight: 800; color: var(--accent); margin-bottom: 0.5rem; }
.plan-desc { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 1rem; }
.plan-features {
  list-style: none;
  font-size: 0.8rem;
  color: var(--text-main);
  margin-bottom: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.plan-features li { display: flex; align-items: center; gap: 0.5rem; }
.check-icon { color: var(--success); font-weight: bold; }

/* Result Modal */
.result-modal { max-width: 680px; text-align: center; }
.result-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  padding: 0.35rem 1.2rem;
  border-radius: 20px;
  margin-bottom: 1rem;
}
.result-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin: 1.25rem 0;
}

@media (max-width: 600px) {
  .result-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
}

.result-stat-box {
  background: var(--bg-card);
  padding: 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.result-stat-box .title {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 2px;
}
.result-stat-box .val {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-heading);
}

.result-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  margin-bottom: 0.75rem;
}
.result-status-pill.status-pass {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1.5px solid #10b981;
}
.result-status-pill.status-practice {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1.5px solid #f59e0b;
}

.weak-keys-section {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 1rem;
  border: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  text-align: left;
}
.weak-keys-section h4 { font-size: 0.9rem; color: var(--warning); margin-bottom: 0.5rem; }
.weak-keys-list { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.weak-key-pill {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 700;
}

/* Common Admin Styles */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: var(--card-shadow);
}
.stat-card .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}
.stat-card .value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-top: 0.25rem;
}
.data-table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--card-shadow);
  color: var(--text-main);
}
.data-table-card h3,
.data-table-card h4 {
  color: var(--text-heading);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
  margin-top: 1rem;
  color: var(--text-main);
}
.data-table th {
  padding: 0.75rem 1rem;
  background: var(--table-header-bg);
  color: var(--table-header-text);
  border-bottom: 2px solid var(--border-color);
  font-weight: 700;
}
.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--table-row-border);
  color: var(--text-main);
}
.data-table tbody tr:hover {
  background: var(--table-row-hover);
}
.admin-sub-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: 8px;
  color: var(--text-main);
}
.admin-sub-card h4 {
  color: var(--text-heading);
  margin-bottom: 0.75rem;
}
.admin-sub-card li {
  color: var(--text-main);
}
.weak-keys-section h4 { font-size: 0.9rem; color: var(--warning); margin-bottom: 0.5rem; }
.weak-keys-list { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.weak-key-pill {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 700;
}

/* Certificate Preview */
.certificate-preview {
  border: 4px double #d97706;
  background: #fffbeb;
  color: #1e293b;
  padding: 1.5rem;
  border-radius: 8px;
  margin-top: 1rem;
  text-align: center;
}
.certificate-preview h3 { font-size: 1.3rem; color: #92400e; font-weight: 800; text-transform: uppercase; }
.certificate-preview p { font-size: 0.9rem; margin: 0.5rem 0; }

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  z-index: 300;
}

.toast {
  background: #1e293b;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.8rem 1.2rem;
  border-radius: 10px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  font-size: 0.9rem;
  animation: slideUp 0.25s ease-out;
}

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

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Admin Status Toggle Button */
.status-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.65rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  user-select: none;
}

.status-toggle-btn.active {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.4);
}

.status-toggle-btn.active:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.4);
}

.status-toggle-btn.inactive {
  background: rgba(148, 163, 184, 0.15);
  color: var(--text-muted);
  border-color: rgba(148, 163, 184, 0.3);
}

.status-toggle-btn.inactive:hover {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.4);
}

/* Responsive Layout */
@media (max-width: 1100px) {
  .tutor-stage-layout {
    grid-template-columns: 1fr;
  }
  .side-column {
    flex-direction: row;
    justify-content: space-around;
  }
  .hand-side-slot {
    width: auto;
  }
}

/* ==========================================================================
   Admin Passage Content Editor & Live Font Preview
   ========================================================================== */
.admin-editor-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.35rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.85rem;
}

.editor-toolbar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.editor-font-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  background: rgba(37, 99, 235, 0.12);
  color: var(--primary-light);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 700;
}

.editor-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.editor-view-tabs {
  display: inline-flex;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 2px;
}

.editor-view-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.76rem;
  font-weight: 600;
  padding: 0.25rem 0.55rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.editor-view-tab-btn:hover {
  color: var(--text-main);
}

.editor-view-tab-btn.active {
  background: var(--primary);
  color: #ffffff;
}

.font-size-stepper {
  display: inline-flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
}

.font-size-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  padding: 0.25rem 0.45rem;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}

.font-size-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.font-size-display {
  font-size: 0.74rem;
  color: var(--text-muted);
  padding: 0 0.35rem;
  min-width: 34px;
  text-align: center;
}

.editor-textarea-styled {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text-main);
  padding: 0.85rem;
  line-height: 1.6;
  resize: vertical;
  transition: border-color 0.2s, font-size 0.15s;
  min-height: 140px;
}

.editor-textarea-styled:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.editor-live-preview-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.85rem;
  line-height: 1.6;
  min-height: 110px;
  max-height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-main);
}

.editor-split-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (max-width: 650px) {
  .editor-split-container {
    grid-template-columns: 1fr;
  }
}

.editor-helper-notice {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: 6px;
  padding: 0.45rem 0.7rem;
  font-size: 0.78rem;
  color: #f59e0b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.editor-footer-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  color: var(--text-muted);
  padding-top: 0.25rem;
}

.passage-table-snippet {
  font-size: 0.82rem;
  color: var(--text-muted);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 3px;
  line-height: 1.3;
}

/* ==========================================================================
   Admin Filter Bar, Sort Headers & Pagination Styles
   ========================================================================== */

.admin-filter-bar {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1rem 0 1.25rem 0;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

.filter-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 140px;
  flex: 1 1 auto;
}

.filter-field-sm {
  min-width: 110px;
  flex: 0 1 auto;
}

.filter-field-lg {
  min-width: 220px;
  flex: 2 1 auto;
}

.filter-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.filter-control {
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
  font-family: inherit;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--input-bg);
  color: var(--input-text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}

.filter-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.filter-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

.btn-toggle-sort {
  padding: 0.45rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.15s;
}

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

.btn-reset-filter {
  padding: 0.45rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.15s;
}

.btn-reset-filter:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border-color: var(--error);
}

/* Sortable Table Header */
.data-table th.sortable-th {
  cursor: pointer;
  user-select: none;
  position: relative;
  transition: background-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.data-table th.sortable-th:hover {
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--primary-light);
}

.sort-icon {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.5;
  transition: all 0.15s;
}

.sortable-th:hover .sort-icon {
  opacity: 1;
}

.sortable-th.active-sort {
  background-color: rgba(37, 99, 235, 0.14) !important;
  color: var(--primary-light) !important;
  border-bottom: 2px solid var(--primary) !important;
}

.sortable-th.active-sort .sort-icon {
  opacity: 1;
  color: var(--primary);
  font-weight: 900;
}

/* Pagination Bar */
.admin-pagination-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.86rem;
  color: var(--text-muted);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pagination-btn {
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

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

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-indicator-badge {
  padding: 0.35rem 0.7rem;
  font-weight: 700;
  border-radius: 6px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-light);
  font-size: 0.82rem;
}

.page-size-wrap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.page-size-select {
  padding: 0.3rem 0.5rem;
  font-size: 0.82rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: var(--input-text);
  outline: none;
}

/* Card Header with count badges */
.card-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.title-with-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Mini table filters (Dashboard tables) */
.mini-table-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mini-filter-input {
  padding: 0.35rem 0.6rem;
  font-size: 0.78rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--input-text);
  outline: none;
  min-width: 120px;
  flex: 1 1 auto;
}

.mini-filter-select {
  padding: 0.35rem 0.5rem;
  font-size: 0.78rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--input-text);
  outline: none;
}

/* Analytics progress bars */
.analytics-bar-row {
  margin-bottom: 0.75rem;
}

.analytics-bar-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  margin-bottom: 0.3rem;
}

.analytics-bar-bg {
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.analytics-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.4s ease;
}

.analytics-summary-banner {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: 1rem 1.25rem;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 8px;
  margin-bottom: 1.5rem;
}

.analytics-summary-item {
  display: flex;
  flex-direction: column;
}

.analytics-summary-item .label {
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}

.analytics-summary-item .val {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-light);
}

/* ==========================================================================
   Hamburger Button, Mobile Mini-HUD & Off-Canvas Navigation Drawer
   ========================================================================== */

/* Hamburger Button (Desktop: Hidden | Mobile/Tablet: Visible) */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 7px;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
  outline: none;
}

.hamburger-btn:hover,
.hamburger-btn:focus-visible {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
}

.hamburger-bar {
  width: 100%;
  height: 2.5px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all 0.25s ease;
}

/* Mobile & Tablet Real-Time Performance HUD in Top Header */
.mobile-header-hud,
.mobile-mini-hud {
  display: none;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 0.2rem 0.45rem;
  user-select: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.hud-chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 0.18rem 0.5rem;
  border-radius: 12px;
  font-size: 0.74rem;
  font-weight: 800;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.hud-chip .chip-label {
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.hud-chip .chip-val {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
}

.wpm-chip { color: #38bdf8; border-color: rgba(56, 189, 248, 0.3); background: rgba(56, 189, 248, 0.12); }
.acc-chip { color: #10b981; border-color: rgba(16, 185, 129, 0.3); background: rgba(16, 185, 129, 0.12); }
.err-chip { color: #f43f5e; border-color: rgba(244, 63, 94, 0.3); background: rgba(244, 63, 94, 0.12); }
.time-chip { color: #fbbf24; border-color: rgba(251, 191, 36, 0.3); background: rgba(251, 191, 36, 0.12); }

/* Ensure global selects and options respect theme */
select option {
  background: var(--bg-surface) !important;
  color: var(--text-main) !important;
}

/* Off-Canvas Backdrop */
.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.drawer-backdrop.open {
  opacity: 1;
  visibility: visible;
}

/* Off-Canvas Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 360px;
  max-width: 86vw;
  height: 100vh;
  background: var(--bg-surface);
  color: var(--text-main);
  border-left: 1px solid var(--border-color);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.5);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.mobile-drawer.open {
  transform: translateX(0);
}

body.drawer-open {
  overflow: hidden;
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-card);
}

.drawer-header-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.drawer-logo-icon {
  font-size: 1.25rem;
}

.drawer-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-heading);
}

.drawer-close-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.drawer-close-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border-color: #ef4444;
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.drawer-section {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1.1rem;
}

.drawer-section:last-child {
  border-bottom: none;
  padding-bottom: 0.5rem;
}

.drawer-section-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 800;
  color: var(--primary-light);
  margin-bottom: 0.65rem;
}

.drawer-user-section {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 0.85rem;
  border: 1px solid var(--border-color);
}

.drawer-user-info {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.75rem;
}

.drawer-user-icon {
  font-size: 1.6rem;
}

.drawer-user-text {
  display: flex;
  flex-direction: column;
}

.drawer-user-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-heading);
}

.drawer-user-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.drawer-user-buttons {
  display: flex;
  gap: 0.5rem;
}

.drawer-workflow-grid,
.drawer-layout-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.4rem;
}

.drawer-workflow-btn,
.drawer-layout-btn {
  width: 100%;
  text-align: left;
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.drawer-workflow-btn .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  font-size: 0.7rem;
  margin-right: 0.4rem;
}

.drawer-workflow-btn.active,
.drawer-layout-btn.active {
  background: var(--primary);
  border-color: var(--primary-light);
  color: #fff;
  box-shadow: 0 0 10px var(--primary-glow);
}

.drawer-subgroup-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.4rem;
}

.drawer-hud-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.drawer-hud-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  display: flex;
  flex-direction: column;
}

.drawer-hud-card .label {
  font-size: 0.68rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}

.drawer-hud-card .val {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-top: 2px;
}

.drawer-actions-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.drawer-action-btn {
  width: 100%;
  justify-content: flex-start;
  font-size: 0.82rem;
  padding: 0.55rem 0.85rem;
}

/* ==========================================================================
   Tablet & Mobile Responsive Breakpoints (<= 1024px)
   Full-Height Arena, Real-Time Header HUD & 50/50 vs 33/33/33 Flex Sizing
   ========================================================================== */
@media (max-width: 1024px) {
  html, body {
    height: 100% !important;
    min-height: 100dvh !important;
  }

  body {
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important; /* Prevents page-level scroll so arena cards fill full height */
  }

  /* Show Hamburger & Real-Time Performance HUD in Top Navigation Header */
  .hamburger-btn {
    display: flex !important;
  }

  .mobile-header-hud,
  .mobile-mini-hud {
    display: flex !important;
  }

  /* Hide Desktop Chrome & Secondary Navigation in Top Navbar */
  .nav-selectors {
    display: none !important;
  }

  .nav-right button:not(.hamburger-btn),
  .nav-right a,
  .nav-right .status-badge {
    display: none !important;
  }

  .navbar {
    flex: 0 0 auto !important;
    padding: 0.45rem 0.85rem !important;
    justify-content: space-between !important;
    gap: 0.4rem !important;
  }

  .nav-left {
    gap: 0.5rem;
  }

  .nav-right {
    gap: 0.4rem;
    display: flex;
    align-items: center;
  }

  /* Hide Desktop 4-Stage Workflow Bar & Large HUD Container */
  .tutor-workflow-wrapper {
    display: none !important;
  }

  .hud-bar-container {
    display: none !important;
  }

  /* Hide Side Columns & Anatomical Hands from Main Screen */
  .side-column-left,
  .side-column-right,
  .hand-side-slot,
  #left-hand-mount,
  #right-hand-mount {
    display: none !important;
  }

  /* Main Workspace: Covers 100% of Remaining Viewport Height */
  .tutor-workspace-root {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    padding: 0.35rem 0.55rem !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .tutor-stage-layout {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
  }

  .center-arena-column {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    max-width: 100% !important;
  }

  /* Lavender Arena Card covers full remaining height */
  .lavender-arena-card {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 0.45rem 0.6rem !important;
    gap: 0.35rem !important;
    overflow: hidden !important;
  }

  /* Compact Middle Toolbar */
  .middle-toolbar-bar {
    flex: 0 0 auto !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    flex-wrap: nowrap !important;
    gap: 0.35rem !important;
    padding: 0.2rem 0.45rem !important;
    margin: 0 !important;
  }

  .exercise-picker-select {
    max-width: 200px;
    font-size: 0.82rem;
    padding: 0.2rem 0.45rem;
  }

  .tool-btn {
    padding: 0.22rem 0.48rem;
    font-size: 0.8rem;
  }

  .font-size-label {
    font-size: 0.85rem;
    padding: 0 0.25rem;
    min-width: 20px;
  }

  /* -------------------------------------------------------------
     Dynamic Height Division:
     When Virtual Keyboard is Collapsed (Disabled) -> 50% / 50%
     When Virtual Keyboard is Open (Enabled)      -> ~33% / 33% / 33%
     ------------------------------------------------------------- */
  .dualbox-display {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    max-height: none !important;
    height: auto !important;
    width: 100% !important;
    box-sizing: border-box !important;
    font-size: clamp(17px, 2.4vh, 23px) !important;
    padding: 0.55rem 0.85rem !important;
    line-height: 1.55 !important;
    border-radius: 4px;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
  }

  /* Virtual Keyboard Drawer when Open: Takes 1/3 (~33%) of Arena Height */
  .virtual-keyboard-drawer:not(.collapsed) {
    position: relative !important;
    z-index: 20 !important;
    pointer-events: auto !important;
    flex: 1 1 0 !important;
    min-height: 0 !important;
    max-height: none !important;
    height: auto !important;
    display: flex !important;
    flex-direction: column !important;
    margin-top: 0.2rem !important;
    padding: 0.35rem 0.55rem !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .virtual-keyboard-drawer:not(.collapsed) .virtual-keyboard-topbar {
    position: relative !important;
    z-index: 25 !important;
    flex: 0 0 auto !important;
    margin-bottom: 0.15rem !important;
    padding-bottom: 0.15rem !important;
  }

  .btn-close-vk {
    position: relative !important;
    z-index: 30 !important;
    pointer-events: auto !important;
    touch-action: manipulation !important;
    cursor: pointer !important;
  }

  .virtual-keyboard-drawer:not(.collapsed) .keyboard-container,
  .virtual-keyboard-drawer:not(.collapsed) #keyboard-mount {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    padding: 0 !important;
  }

  .virtual-keyboard-drawer:not(.collapsed) .keyboard-row {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 2px !important;
    margin: 1px 0 !important;
    min-width: 560px !important;
  }

  .virtual-keyboard-drawer:not(.collapsed) .keyboard-key {
    height: clamp(22px, 3.8vh, 32px) !important;
    min-width: clamp(22px, 3.5vw, 32px) !important;
    font-size: clamp(0.68rem, 1.8vw, 0.78rem) !important;
    cursor: pointer;
    touch-action: manipulation;
    padding: 0 2px !important;
  }
}

/* ==========================================================================
   Mobile Phone Breakpoint (<= 768px)
   ========================================================================== */
@media (max-width: 768px) {
  .navbar {
    padding: 0.35rem 0.55rem !important;
  }

  .brand-logo {
    font-size: 1.05rem;
    gap: 0.35rem;
  }

  .brand-logo .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 0.9rem;
  }

  .mobile-header-hud,
  .mobile-mini-hud {
    padding: 0.15rem 0.35rem;
    gap: 0.25rem;
  }

  .hud-chip {
    padding: 0.12rem 0.35rem;
    font-size: 0.68rem;
    gap: 2px;
  }

  .hud-chip .chip-label {
    font-size: 0.58rem;
  }

  .tutor-workspace-root {
    padding: 0.25rem 0.35rem !important;
  }

  .lavender-arena-card {
    padding: 0.35rem 0.45rem !important;
    gap: 0.25rem !important;
  }

  .dualbox-display {
    font-size: clamp(16px, 2.3vh, 20px) !important;
    padding: 0.45rem 0.65rem !important;
    line-height: 1.5 !important;
  }

  .exercise-picker-select {
    max-width: 140px;
    font-size: 0.74rem;
  }

  .tool-btn {
    padding: 0.18rem 0.38rem;
    font-size: 0.74rem;
  }

  .virtual-keyboard-drawer:not(.collapsed) .keyboard-row {
    min-width: 510px !important;
  }
}

/* Ultra-Compact Small Mobile (<= 480px) */
@media (max-width: 480px) {
  .brand-logo .hindi-sub {
    display: none;
  }

  .brand-logo .brand-text {
    font-size: 0.92rem;
  }

  .exercise-picker-select {
    max-width: 110px;
    font-size: 0.7rem;
  }

  .err-chip {
    display: none; /* Hide ERR chip on narrow screens to fit WPM, ACC, TIME perfectly */
  }

  .dualbox-display {
    font-size: 16px !important;
    padding: 0.4rem 0.55rem !important;
  }
}

/* Key Active & Pressed Feedback */
.keyboard-key {
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.keyboard-key:active,
.keyboard-key.key-pressed {
  transform: translateY(2px);
  box-shadow: 0 1px 0 #111827 !important;
  background: #3b82f6 !important;
  color: #ffffff !important;
}

.keyboard-key.shift-active {
  background: #2563eb !important;
  color: #ffffff !important;
  border-color: #60a5fa !important;
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.6);
}