/**
 * ARYM — Fixed Spatial Layout Architecture (`static/spatial-layout.css`)
 *
 * Implements the selected Layout 3 architecture permanently:
 * - Bottom Floating Liquid Glass Launcher Dock (`.chat-header` anchored at bottom center)
 * - Slide-over Floating Liquid Glass Drawer (`#sidebar` hovering at top-left above the dock)
 * - Full-Height Bento Spatial Hub (`#qa-panel`), 2-Column Bento Studio (`#learning-tools-panel`),
 *   and 2-Column Split Command Dashboard (`#timetable-panel`).
 */

/* ============================================================================
   1. GLOBAL SPATIAL STAGE & VISIBILITY RULES
   ============================================================================ */
[hidden],
.qa-panel[hidden],
.learning-tools-panel[hidden],
.timetable-panel[hidden],
.tool-tab-panel[hidden] {
  display: none !important;
}

.app-container {
  position: relative !important;
  z-index: 1 !important;
  display: flex !important;
  width: 100vw !important;
  height: 100vh !important;
  overflow: hidden !important;
  background: transparent !important;
  box-sizing: border-box !important;
}

.main-content {
  flex: 1 1 auto !important;
  min-width: 0 !important;
  height: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  background: transparent !important;
  position: relative !important;
  overflow: hidden !important;
}

/* ============================================================================
   2. BOTTOM FLOATING LIQUID GLASS LAUNCHER DOCK (`.chat-header`)
   ============================================================================ */
.chat-header {
  position: fixed !important;
  bottom: 16px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  width: min(1260px, calc(100vw - 32px)) !important;
  margin: 0 !important;
  padding: 10px 18px !important;
  min-height: 62px !important;
  border-radius: 9999px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 12px !important;
  box-sizing: border-box !important;
  flex-shrink: 0 !important;
  z-index: 55 !important;
  box-shadow: var(--lg-shadow-island) !important;
}

.chat-header .header-left,
.chat-header .header-right {
  position: static !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  flex-shrink: 0 !important;
}

.chat-header .icon-btn {
  width: auto !important;
  height: 36px !important;
  min-width: 36px !important;
  padding: 0 13px !important;
  border-radius: 9999px !important;
  font-size: 12.5px !important;
  font-weight: 600 !important;
}

.chat-header .mode-switch {
  margin: 0 !important;
  width: auto !important;
  max-width: none !important;
  flex: 0 1 auto !important;
}

/* Compact Brand Pill inside the Bottom Floating Liquid Glass Dock */
.header-brand-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 4px 12px 4px 6px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.24);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.35);
}

.header-brand-monogram {
  width: 28px;
  height: 28px;
  border-radius: 9999px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.55);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 13px;
  color: #ffffff;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.7);
}

.header-brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.header-brand-title {
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: #ffffff;
}

.header-brand-sub {
  font-size: 9.5px;
  color: #d4d4d8;
  letter-spacing: 0.02em;
}

/* ============================================================================
   3. FLOATING LIQUID GLASS SLIDE-OVER DRAWER (`#sidebar`)
   ============================================================================ */
.sidebar {
  position: fixed !important;
  top: 18px !important;
  left: 18px !important;
  bottom: 92px !important;
  width: min(320px, calc(100vw - 36px)) !important;
  height: auto !important;
  margin-left: 0 !important;
  border-radius: 28px !important;
  padding: 18px !important;
  z-index: 60 !important;
  transform: translateX(calc(-100% - 36px)) !important;
  opacity: 0 !important;
  pointer-events: none !important;
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.24s ease !important;
}

body.sidebar-collapsed .sidebar {
  margin-left: 0 !important;
}

.sidebar.drawer-open,
.sidebar.open,
body.sidebar-open .sidebar {
  transform: translateX(0) !important;
  opacity: 1 !important;
  pointer-events: auto !important;
}

.sidebar-backdrop {
  display: block !important;
  position: fixed !important;
  inset: 0 !important;
  background: rgba(8, 8, 12, 0.42) !important;
  backdrop-filter: blur(4px) !important;
  -webkit-backdrop-filter: blur(4px) !important;
  z-index: 50 !important;
  opacity: 0 !important;
  pointer-events: none !important;
  transition: opacity 0.24s ease !important;
}

body.sidebar-open .sidebar-backdrop,
.sidebar-backdrop.open {
  opacity: 1 !important;
  pointer-events: auto !important;
}

@media (max-width: 640px) {
  .sidebar {
    bottom: 112px !important;
  }
}

/* ============================================================================
   4. RESTRUCTURED QA WORKSPACE: BENTO SPATIAL HUB + FLOATING GLASS COMPOSER
   ============================================================================ */
.qa-panel:not([hidden]) {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: space-between !important;
  flex: 1 1 0% !important;
  min-height: 0 !important;
  width: 100% !important;
  max-width: 1280px !important;
  margin: 0 auto !important;
  padding: 20px 24px 96px 24px !important;
  box-sizing: border-box !important;
  gap: 14px !important;
}

.messages-container {
  width: 100% !important;
  max-width: 1180px !important;
  margin: 0 auto !important;
  flex: 1 1 auto !important;
  min-height: 0 !important;
  overflow-y: auto !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 14px !important;
  padding: 4px 6px !important;
  box-sizing: border-box !important;
}

.qa-panel.welcome-mode .messages-container {
  justify-content: center !important;
  overflow-y: visible !important;
}

/* Welcome Card Restructured into Full Spatial Bento Hub */
.message.assistant.welcome-card {
  width: 100% !important;
  max-width: 1140px !important;
  margin: 0 auto !important;
  padding: 0 !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  gap: 18px !important;
}

.arym-spatial-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}

.arym-hero-lens-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-radius: 9999px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.05));
  border-top: 1.5px solid rgba(255, 255, 255, 0.68);
  border-left: 1px solid rgba(255, 255, 255, 0.42);
  border-right: 1px solid rgba(255, 255, 255, 0.20);
  border-bottom: 1.5px solid rgba(255, 255, 255, 0.34);
  box-shadow:
    0 12px 32px rgba(0, 0, 0, 0.75),
    inset 0 1.5px 2px rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #ffffff;
}

.arym-spatial-hero h3 {
  font-size: clamp(1.55rem, 2.3vw, 2.15rem) !important;
  font-weight: 800 !important;
  letter-spacing: -0.025em !important;
  color: #ffffff !important;
  margin: 2px 0 0 0 !important;
  text-shadow: 0 4px 24px rgba(255, 255, 255, 0.18);
}

.arym-spatial-hero p {
  font-size: 13.5px !important;
  color: #cbd5e1 !important;
  margin: 0 !important;
  max-width: 680px;
}

/* 3-Column Apple Liquid Glass Bento Grid */
.arym-bento-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  width: 100%;
}

.arym-bento-card {
  border-radius: 24px !important;
  padding: 20px 22px !important;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  text-align: left;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.25s ease;
  overflow: hidden;
}

.arym-bento-card:hover {
  transform: translateY(-3px);
}

.arym-bento-card::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -25%;
  width: 180px;
  height: 180px;
  border-radius: 9999px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.14) 0%, transparent 70%);
  pointer-events: none;
}

.bento-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.bento-step-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: 9999px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.38);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.5);
}

.bento-icon-orb {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.26), rgba(255, 255, 255, 0.06));
  border: 1px solid rgba(255, 255, 255, 0.52);
  box-shadow: inset 0 1.5px 2px rgba(255, 255, 255, 0.65);
}

.arym-bento-card h4 {
  margin: 4px 0 4px 0;
  font-size: 15.5px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.arym-bento-card p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: #d4d4d8;
}

.bento-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 4px;
}

.bento-chip-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 9999px;
  font-size: 11.5px;
  font-weight: 600;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.34);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.42);
  cursor: pointer;
  transition: all 0.18s ease;
}

.bento-chip-btn:hover {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

/* Floating Liquid Glass Composer Capsule (`.input-area` / `.chat-form`) */
.input-area {
  width: 100% !important;
  max-width: 960px !important;
  margin: 0 auto !important;
  padding: 0 !important;
  flex-shrink: 0 !important;
}

.chat-form {
  width: 100% !important;
  border-radius: 26px !important;
  padding: 14px 18px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 10px !important;
  box-sizing: border-box !important;
  box-shadow: var(--lg-shadow-island) !important;
}

.chat-form textarea {
  width: 100% !important;
  min-height: 28px !important;
  max-height: 140px !important;
  font-size: 14.5px !important;
  line-height: 1.5 !important;
  color: #ffffff !important;
  padding: 2px 4px !important;
  resize: none !important;
}

.chat-form textarea::placeholder {
  color: #a1a1aa !important;
}

.chat-form-bottom {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 10px !important;
}

.chat-form-controls,
.chat-form-right {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
}

.btn-attach {
  width: 36px !important;
  height: 36px !important;
  border-radius: 9999px !important;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0.06)) !important;
  border: 1px solid rgba(255, 255, 255, 0.52) !important;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.6) !important;
  color: #ffffff !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
}

.btn-send {
  width: 38px !important;
  height: 38px !important;
  min-height: 38px !important;
  padding: 0 !important;
  border-radius: 9999px !important;
}

/* ============================================================================
   5. RESTRUCTURED LEARNING TOOLS WORKSPACE: 2-COLUMN BENTO STUDIO
   ============================================================================ */
.learning-tools-panel:not([hidden]) {
  display: flex !important;
  flex-direction: column !important;
  flex: 1 1 0% !important;
  min-height: 0 !important;
  overflow-y: auto !important;
  width: 100% !important;
  max-width: 1320px !important;
  margin: 0 auto !important;
  padding: 20px 24px 98px 24px !important;
  box-sizing: border-box !important;
  gap: 16px !important;
}

.learning-tools-panel .tool-tabs {
  align-self: center !important;
  display: inline-flex !important;
  gap: 6px !important;
  padding: 6px !important;
  border-radius: 9999px !important;
  width: auto !important;
}

.tool-tab-button {
  padding: 8px 18px !important;
  border-radius: 9999px !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  color: #d4d4d8 !important;
  background: transparent !important;
  border: 1px solid transparent !important;
  cursor: pointer !important;
}

.tool-tab-button.active {
  background: var(--lg-pill-active) !important;
  color: #000000 !important;
  border-color: #ffffff !important;
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.25) !important;
}

/* Transform Practice Tab into a 2-Column Side-by-Side Bento Grid */
#tool-tab-practice:not([hidden]) {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px !important;
}

#tool-tab-practice .learning-topic-card {
  display: grid !important;
  grid-template-columns: 1.08fr 0.92fr !important;
  gap: 22px !important;
  align-items: start !important;
  border-radius: 26px !important;
  padding: 24px !important;
}

#tool-tab-practice .learning-topic-card > .tool-panel-header {
  grid-column: 1 / 2 !important;
}

#tool-tab-practice .learning-topic-card > .learning-generate-form {
  grid-column: 1 / 2 !important;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 20px;
  padding: 18px;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.32);
}

#tool-tab-practice .learning-topic-card > .study-material-integrated-box {
  grid-column: 2 / 3 !important;
  grid-row: 1 / 4 !important;
  margin-top: 0 !important;
  padding: 20px !important;
  border-top: none !important;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.03)) !important;
  border: 1px solid rgba(255, 255, 255, 0.34) !important;
  border-radius: 22px !important;
  box-shadow: inset 0 1.5px 2px rgba(255, 255, 255, 0.45) !important;
}

#tool-tab-practice .learning-topic-card > .advanced-source-selection {
  grid-column: 1 / -1 !important;
}

.learning-tools-panel .form-row {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
  align-items: flex-end !important;
}

.learning-tools-panel .form-group {
  display: flex !important;
  flex-direction: column !important;
  gap: 6px !important;
  flex: 1 1 140px !important;
}

.learning-tools-panel .form-group.flex-2 {
  flex: 2 1 240px !important;
}

.learning-tools-panel .form-group.form-actions {
  flex-direction: row !important;
  align-items: center !important;
  gap: 8px !important;
  flex: 0 0 auto !important;
}

/* ============================================================================
   6. RESTRUCTURED TIMETABLE WORKSPACE: FULL USABLE WIDTH WIZARD & STEP 3
   ============================================================================ */
.timetable-panel:not([hidden]) {
  display: flex !important;
  flex-direction: column !important;
  gap: 18px !important;
  align-items: stretch !important;
  flex: 1 1 0% !important;
  min-height: 0 !important;
  overflow-y: auto !important;
  width: 100% !important;
  max-width: 1380px !important;
  margin: 0 auto !important;
  padding: 20px 24px 98px 24px !important;
  box-sizing: border-box !important;
}

.timetable-panel > .timetable-header {
  width: 100% !important;
  display: flex !important;
  flex-wrap: wrap !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 12px !important;
  padding: 16px 22px !important;
  border-radius: 24px !important;
  background: var(--lg-surface) !important;
  border-top: 1.5px solid var(--lg-border-top) !important;
  border-left: 1.5px solid var(--lg-border-left) !important;
  border-right: 1px solid var(--lg-border-right) !important;
  border-bottom: 1.5px solid var(--lg-border-bottom) !important;
  box-shadow: var(--lg-shadow-card) !important;
}

#planner-wizard-progress {
  display: inline-flex !important;
  flex-wrap: wrap !important;
  gap: 6px !important;
  padding: 5px !important;
  border-radius: 9999px !important;
  background: rgba(0, 0, 0, 0.45) !important;
  border: 1px solid rgba(255, 255, 255, 0.22) !important;
}

#planner-wizard-progress button {
  padding: 7px 14px !important;
  border-radius: 9999px !important;
  font-size: 12.5px !important;
  font-weight: 600 !important;
  color: #d4d4d8 !important;
  background: transparent !important;
  border: 1px solid transparent !important;
  cursor: pointer !important;
}

#planner-wizard-progress button[aria-current="step"] {
  background: var(--lg-pill-active) !important;
  color: #000000 !important;
  font-weight: 700 !important;
  border-color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.25) !important;
}

.timetable-panel > .timetable-header h2 {
  margin: 0 !important;
  font-size: 19px !important;
  font-weight: 800 !important;
}

.timetable-panel > .timetable-header .lookup-description {
  margin: 2px 0 0 0 !important;
  font-size: 12.5px !important;
  color: #cbd5e1 !important;
}

/* Full Usable Width Wizard Screens: Each Step Owns Full Width */
.timetable-panel > .planner-wizard-screen:not([hidden]) {
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
  margin: 0 !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 16px !important;
  background: var(--lg-surface) !important;
  border-top: 1.5px solid var(--lg-border-top) !important;
  border-left: 1.5px solid var(--lg-border-left) !important;
  border-right: 1px solid rgba(255, 255, 255, 0.20) !important;
  border-bottom: 1.5px solid var(--lg-border-bottom) !important;
  border-radius: 26px !important;
  padding: 22px !important;
  box-shadow: var(--lg-shadow-card) !important;
}

/* Weekly Lessons Card nested inside Step 3 with Full Usable Width */
#planner-weekly-lessons-card {
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
  margin: 16px 0 0 0 !important;
  border-radius: 22px !important;
  padding: 20px !important;
  background: var(--lg-surface) !important;
  border: 1px solid rgba(255, 255, 255, 0.18) !important;
}

.timetable-panel > .planner-wizard-footer {
  width: 100% !important;
  box-sizing: border-box !important;
  position: static !important;
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  padding: 12px 18px !important;
  border-radius: 9999px !important;
  background: var(--lg-surface) !important;
  border: 1px solid rgba(255, 255, 255, 0.35) !important;
}

.planner-task-grid {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  gap: 12px !important;
}

.planner-task-grid .task-col-wide {
  grid-column: 1 / -1 !important;
}

/* Ensure Table Horizontal Overflow Scroll is Reachable and Smooth */
.table-responsive,
.timetable-card .table-responsive,
.planner-section-card .table-responsive {
  width: 100% !important;
  max-width: 100% !important;
  overflow-x: auto !important;
  overflow-y: auto !important;
  -webkit-overflow-scrolling: touch !important;
  box-sizing: border-box !important;
}

.kb-table {
  min-width: 600px;
  width: 100%;
}

/* Bento Hub Hiding on Active Chat & Centered Chat Layout */
.qa-panel:not(.welcome-mode) .welcome-card,
.messages-container.has-chat .welcome-card,
.messages-container.has-chat .arym-bento-grid {
  display: none !important;
}

.messages-container > .message:not(.welcome-card) {
  flex-shrink: 0 !important;
  width: 100% !important;
  max-width: 900px !important;
  margin: 0 auto !important;
  box-sizing: border-box !important;
}

/* Responsive fallback on narrow screens */
@media (max-width: 1060px) {
  .arym-bento-grid,
  #tool-tab-practice .learning-topic-card {
    grid-template-columns: 1fr !important;
  }
  #tool-tab-practice .learning-topic-card > .study-material-integrated-box {
    grid-column: 1 / -1 !important;
  }
}

/* ============================================================================
   7. MOBILE VIEWPORT OPTIMIZATIONS (355px, 390px, and mobile devices)
   ============================================================================ */
@media (max-width: 640px) {
  /* Compact Two-Row Grid Floating Launcher Dock */
  .chat-header {
    position: fixed !important;
    bottom: 8px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: calc(100vw - 12px) !important;
    max-width: 640px !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    padding: 6px 8px !important;
    border-radius: 20px !important;
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    grid-template-rows: auto auto !important;
    row-gap: 5px !important;
    column-gap: 6px !important;
    min-height: auto !important;
    height: auto !important;
    z-index: 55 !important;
    align-items: center !important;
    justify-content: stretch !important;
  }

  /* Row 1, Column 1: Header Left (#btn-open-sidebar, #btn-clear-chat) */
  .chat-header .header-left {
    grid-column: 1 / 2 !important;
    grid-row: 1 / 2 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    gap: 4px !important;
    min-width: 0 !important;
    flex-shrink: 0 !important;
  }

  /* No giant pill on mobile screens */
  .chat-header .header-brand-pill {
    display: none !important;
  }

  /* Target real #btn-open-sidebar, shorten visible label, maintain >= 32px touch target */
  .chat-header #btn-open-sidebar {
    min-width: 34px !important;
    height: 32px !important;
    padding: 0 8px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-shrink: 0 !important;
    border-radius: 9999px !important;
  }

  .chat-header #btn-open-sidebar .btn-text {
    display: none !important;
  }

  /* #btn-clear-chat */
  .chat-header #btn-clear-chat {
    min-width: 34px !important;
    height: 32px !important;
    padding: 0 8px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 11px !important;
    flex-shrink: 0 !important;
    white-space: nowrap !important;
    border-radius: 9999px !important;
  }

  /* Row 1, Column 2: Header Right (#btn-replay-tour, #btn-account-trigger) */
  .chat-header .header-right {
    grid-column: 2 / 3 !important;
    grid-row: 1 / 2 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 4px !important;
    min-width: 0 !important;
    flex-shrink: 0 !important;
  }

  /* Shorten tour replay button */
  .chat-header #btn-replay-tour {
    min-width: 34px !important;
    height: 32px !important;
    padding: 0 8px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 11px !important;
    flex-shrink: 0 !important;
    border-radius: 9999px !important;
  }

  .chat-header #btn-replay-tour .btn-text {
    display: none !important;
  }

  /* Bound and ellipsis username to prevent squeezing navigation */
  .chat-header #btn-account-trigger {
    max-width: 95px !important;
    min-width: 34px !important;
    height: 32px !important;
    padding: 0 8px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 11px !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    box-sizing: border-box !important;
    flex-shrink: 1 !important;
    border-radius: 9999px !important;
  }

  /* Row 2: Mode Switch (spans full width across both columns) */
  .chat-header .mode-switch {
    grid-column: 1 / -1 !important;
    grid-row: 2 / 3 !important;
    width: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 3px !important;
    padding: 2px !important;
    margin: 0 !important;
    box-sizing: border-box !important;
    min-width: 0 !important;
  }

  /* 3 Mode buttons each occupy equal width */
  .chat-header .mode-button {
    flex: 1 1 0 !important;
    min-width: 0 !important;
    height: 34px !important;
    min-height: 32px !important;
    padding: 4px 4px !important;
    font-size: 11px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 2px !important;
    box-sizing: border-box !important;
  }

  .chat-header .mode-button .mode-text-rest {
    display: none !important;
  }

  /* Ensure no overlap between bottom dock and workspace / composer / panels */
  .qa-panel:not([hidden]) {
    padding: 12px 10px 104px 10px !important;
    gap: 10px !important;
  }

  .learning-tools-panel:not([hidden]) {
    padding: 12px 10px 104px 10px !important;
    gap: 12px !important;
  }

  .timetable-panel:not([hidden]) {
    padding: 12px 10px 104px 10px !important;
    gap: 12px !important;
  }

  .planner-task-grid {
    grid-template-columns: 1fr !important;
  }

  /* Compact Responsive Learning Forms (Practice, Review, Exercise Extraction) */
  .learning-tools-panel .form-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 10px !important;
  }

  .learning-tools-panel .form-group,
  .learning-tools-panel .form-group.flex-1,
  .learning-tools-panel .form-group.flex-2 {
    flex: 0 0 auto !important;
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .learning-tools-panel .form-group .form-input,
  .learning-tools-panel .form-group .form-select {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .learning-tools-panel .form-group.form-actions {
    flex: 0 0 auto !important;
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    flex-direction: column !important;
    flex-wrap: wrap !important;
    align-items: stretch !important;
    gap: 8px !important;
    box-sizing: border-box !important;
  }

  .learning-tools-panel .form-group.form-actions button,
  .learning-tools-panel .form-group.form-actions .btn {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-break: break-word !important;
    text-align: center !important;
    justify-content: center !important;
  }
}

@media (max-width: 390px) {
  .chat-header {
    width: calc(100vw - 8px) !important;
    padding: 4px 6px !important;
    row-gap: 4px !important;
    column-gap: 4px !important;
  }

  .chat-header #btn-account-trigger {
    max-width: 82px !important;
    font-size: 10.5px !important;
    padding: 0 6px !important;
  }

  .chat-header .mode-button {
    padding: 3px 2px !important;
    font-size: 10px !important;
    letter-spacing: -0.02em !important;
  }
}