/* Custom Styles for TrainForge */
:root {
  --bg-primary: #0a0a0d;
  --bg-secondary: #13131a;
  --bg-tertiary: #1b1b24;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --accent-color: #ff5500;
  --accent-glow: rgba(255, 85, 0, 0.15);
  --accent-hover: #ff7733;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(255, 85, 0, 0.4);
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --gold: #fbbf24;
  --gold-glow: rgba(251, 191, 36, 0.15);
  --success: #10b981;
  --danger: #ef4444;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* App Container Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
  width: 260px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 2rem 1rem;
  flex-shrink: 0;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  padding: 0 0.5rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--accent-color);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo-text {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-text span {
  color: var(--accent-color);
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 1rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  width: 100%;
}

.nav-btn:hover {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

.nav-btn.active {
  background-color: var(--accent-glow);
  color: var(--accent-color);
  box-shadow: inset 0 0 0 1px rgba(255, 85, 0, 0.2);
}

.nav-icon {
  width: 20px;
  height: 20px;
}

.nav-icon.gold {
  color: var(--gold);
}

.trainer-badge-container {
  position: relative;
  display: inline-flex;
}

.ai-badge {
  position: absolute;
  top: -8px;
  right: -10px;
  background-color: var(--accent-color);
  color: white;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 1px 4px;
  border-radius: 4px;
}

/* Main Content Area */
.main-content {
  flex-grow: 1;
  padding: 2.5rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  overflow-y: auto;
}

.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

.top-header h1 {
  font-family: var(--font-title);
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.user-status-widget {
  display: flex;
  align-items: center;
}

.tier-badge {
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.4rem 0.8rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tier-badge.free {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.tier-badge.premium {
  background-color: var(--gold-glow);
  color: var(--gold);
  border: 1px solid rgba(251, 191, 36, 0.3);
  box-shadow: 0 0 12px var(--gold-glow);
}

/* Common Components */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--card-shadow);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.btn {
  font-family: var(--font-body);
  font-weight: 700;
  padding: 0.8rem 1.5rem;
  border-radius: 12px;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--accent-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 85, 0, 0.3);
}

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

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--text-secondary);
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.w-100 {
  width: 100%;
}

.text-center {
  text-align: center;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

input[type="text"], input[type="date"], select, textarea {
  width: 100%;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

input[type="text"]:focus, input[type="date"]:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.95rem;
}

/* Tabs Toggle visibility */
.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tab 1: Exercise Library Specifics */
.search-filter-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.search-row {
  display: flex;
  gap: 1rem;
  align-items: center;
  width: 100%;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 1rem;
  width: 20px;
  height: 20px;
  color: var(--text-muted);
}

.search-box input {
  padding-left: 2.75rem;
}

.filters-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
}

.exercise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.exercise-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.exercise-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.category-icon-wrapper {
  background-color: var(--bg-tertiary);
  border-radius: 12px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
  border: 1px solid var(--border-color);
}

.category-svg {
  width: 28px;
  height: 28px;
}

.difficulty-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  text-transform: uppercase;
}

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

.difficulty-badge.intermediate {
  background-color: rgba(251, 191, 36, 0.1);
  color: var(--gold);
}

.difficulty-badge.advanced {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.exercise-card h3 {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.exercise-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: 1rem;
}

.exercise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-secondary);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}

/* Tab 2: Workout Builder */
.builder-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
}

.builder-search-list-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.builder-exercise-list {
  max-height: 250px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.builder-list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.builder-list-item:last-child {
  border-bottom: none;
}

.builder-list-item-info h4 {
  font-size: 0.9rem;
  font-weight: 600;
}

.builder-list-item-info span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.builder-selected-exercises {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 200px;
  max-height: 400px;
  overflow-y: auto;
}

.selected-exercise-card {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
}

.selected-exercise-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.selected-exercise-header h4 {
  font-family: var(--font-title);
  font-size: 1.05rem;
}

.selected-exercise-inputs {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.selected-exercise-inputs input {
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
}

.selected-exercise-inputs span {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.saved-routines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.routine-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.routine-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.routine-card h3 {
  font-family: var(--font-title);
  font-size: 1.2rem;
}

.routine-exercise-list {
  list-style: none;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.routine-exercise-list li {
  margin-bottom: 0.25rem;
}

.routine-card-actions {
  display: flex;
  gap: 0.5rem;
}

/* Tab 3: Calendar */
.calendar-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.calendar-grid-container {
  display: flex;
  flex-direction: column;
}

.calendar-days-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-weight: 700;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
  margin-bottom: 0.5rem;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
}

.calendar-day {
  aspect-ratio: 1;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
  min-height: 70px;
  overflow: hidden;
}

.calendar-day:hover {
  background-color: rgba(255, 255, 255, 0.03);
  border-color: var(--border-focus);
}

.calendar-day.empty {
  opacity: 0.3;
  cursor: default;
}

.calendar-day.empty:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
}

.calendar-day-num {
  font-size: 0.85rem;
  font-weight: 700;
  align-self: flex-start;
}

.calendar-day.today {
  border-color: var(--accent-color);
  box-shadow: inset 0 0 4px var(--accent-glow);
}

.calendar-day-routines {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
  width: 100%;
}

.calendar-routine-tag {
  background-color: var(--accent-glow);
  color: var(--accent-color);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 4px;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  border: 1px solid rgba(255, 85, 0, 0.1);
  width: 100%;
  box-sizing: border-box;
}

/* Modal setup */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.modal.active {
  display: flex;
}

.modal-content {
  width: 90%;
  max-width: 450px;
  position: relative;
  animation: zoomIn 0.25s ease-out;
}

@keyframes zoomIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.close-btn {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
}

.close-btn:hover {
  color: var(--text-primary);
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

/* Tab 4: Progress Log */
.log-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
}

.logged-exercise-row {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.logged-exercise-row h4 {
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.logged-sets-inputs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.logged-set-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.logged-set-item input {
  width: 70px;
  padding: 0.3rem 0.5rem;
}

.chart-container {
  margin-top: 1.5rem;
  margin-bottom: 2rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.chart-container canvas {
  max-width: 100%;
  height: auto !important;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
  max-height: 300px;
  overflow-y: auto;
}

.history-card {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
}

.history-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.history-card h4 {
  font-family: var(--font-title);
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.history-card-details {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Tab 5: AI Trainer */
.trainer-layout {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 2rem;
}

.chat-container-card {
  display: flex;
  flex-direction: column;
  height: 600px;
  padding: 0;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(255, 255, 255, 0.01);
}

.trainer-avatar {
  background-color: var(--accent-glow);
  color: var(--accent-color);
  border-radius: 12px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 85, 0, 0.2);
}

.trainer-icon {
  width: 24px;
  height: 24px;
}

.trainer-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
}

.trainer-info p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.chat-limit-counter {
  margin-left: auto;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  background-color: var(--bg-tertiary);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.chat-messages {
  flex-grow: 1;
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.message {
  max-width: 80%;
  padding: 0.8rem 1.1rem;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.5;
}

.system-msg {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  border: 1px solid var(--border-color);
}

.user-msg {
  background-color: var(--accent-color);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.typing-indicator {
  display: flex;
  gap: 4px;
  align-self: flex-start;
  background-color: var(--bg-tertiary);
  padding: 0.8rem 1.1rem;
  border-radius: 14px;
  border-bottom-left-radius: 4px;
  border: 1px solid var(--border-color);
}

.typing-dot {
  width: 6px;
  height: 6px;
  background-color: var(--text-secondary);
  border-radius: 50%;
  animation: typing 1s infinite alternate;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  from { transform: translateY(0); }
  to { transform: translateY(-4px); }
}

.chat-input-area {
  display: flex;
  align-items: center;
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  gap: 0.75rem;
  background-color: rgba(0, 0, 0, 0.15);
}

.chat-input-area textarea {
  resize: none;
  min-height: 42px;
  max-height: 120px;
}

#chat-send-btn {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.send-icon {
  width: 18px;
  height: 18px;
}

/* Pricing Card specific styling */
.pricing-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  height: max-content;
}

.pricing-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

.price-tag {
  display: flex;
  align-items: baseline;
  margin-bottom: 1.5rem;
}

.price-tag .amount {
  font-family: var(--font-title);
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-color);
}

.price-tag .period {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-left: 0.25rem;
}

.pricing-features {
  list-style: none;
  width: 100%;
  margin-bottom: 2rem;
  text-align: left;
}

.pricing-features li {
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.check-icon {
  width: 18px;
  height: 18px;
  color: var(--success);
  flex-shrink: 0;
}

/* Tab 6: Premium Verification & Settings */
.premium-tab-container {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2rem;
  align-items: start;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

.premium-settings-layout {
  width: 100%;
}

.premium-settings-layout h2 {
  font-family: var(--font-title);
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.subscription-status-card {
  padding: 1.25rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.subscription-status-card.free {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.subscription-status-card.premium {
  background-color: var(--gold-glow);
  color: var(--gold);
  border-color: rgba(251, 191, 36, 0.3);
}

.subscription-status-card.cancelled {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}

.license-form button {
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}

.license-verification-spinner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.spinner {
  border: 3px solid rgba(255, 255, 255, 0.1);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border-left-color: var(--accent-color);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.license-message {
  margin-top: 1rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.license-message.success { color: var(--success); }
.license-message.error { color: var(--danger); }
.license-message.warning { color: var(--gold); }

.gumroad-link-box {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.gumroad-link-box a {
  color: var(--accent-color);
  text-decoration: underline;
}

.gumroad-link-box a:hover {
  color: var(--accent-hover);
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-top: 1px solid var(--border-color);
    order: 2;
    position: fixed;
    bottom: 0;
    left: 0;
    z-index: 999;
    padding: 0.5rem 0.25rem;
    background-color: var(--bg-secondary);
    backdrop-filter: blur(10px);
  }

  .logo-section {
    display: none; /* Hide logo on mobile bottom bar */
  }

  .nav-menu {
    flex-direction: row;
    justify-content: space-around;
    gap: 0.25rem;
    width: 100%;
  }

  .nav-btn {
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 0.25rem;
    font-size: 0.65rem;
    gap: 0.25rem;
    border-radius: 8px;
    width: auto;
    flex: 1;
    text-align: center;
  }

  .nav-btn span:not(.ai-badge) {
    display: block;
  }

  .main-content {
    padding: 1.25rem;
    padding-bottom: 80px; /* Space for the bottom navbar */
  }

  .top-header {
    margin-bottom: 1.5rem;
  }

  .top-header h1 {
    font-size: 1.75rem;
  }

  .search-row {
    flex-direction: column;
    align-items: stretch;
  }

  .builder-layout, .log-grid, .trainer-layout, .premium-tab-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .chat-container-card {
    height: 480px;
  }
}

/* Multi-chat Sidebar Styles */
.chat-container-card {
  display: flex;
  flex-direction: row;
  height: 600px;
  padding: 0;
  overflow: hidden;
}

.chat-sidebar {
  width: 200px;
  background-color: rgba(255, 255, 255, 0.01);
  border-right: 1px solid var(--border-color);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.chat-list-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 0.6rem 0.8rem;
  font-size: 0.82rem;
  font-weight: 600;
  text-align: left;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-list-btn:hover {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

.chat-list-btn.active {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--accent-color);
}

.delete-chat-sub-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0 4px;
  transition: color 0.2s ease;
  margin-left: 0.5rem;
}

.delete-chat-sub-btn:hover {
  color: var(--danger);
}

/* Mobile responsive chat adjustment */
@media (max-width: 768px) {
  .chat-container-card {
    flex-direction: column;
  }
  .chat-sidebar {
    width: 100%;
    height: 120px;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem;
  }
  .chat-list {
    flex-direction: row !important;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 0.25rem;
  }
  .chat-list-btn {
    white-space: nowrap;
    width: auto;
  }

  /* Hide Ko-fi widget on mobile to prevent blocking bottom navigation bar */
  .floatingchat-container, 
  .floatingchat-container-mobi, 
  .floatingchat-container-wrap, 
  .floatingchat-container-wrap-mobi,
  #kofi-widget-overlay,
  iframe[src*="ko-fi.com"],
  div[class*="floatingchat"] {
    display: none !important;
  }
}

.chat-input-wrapper {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.15);
  padding: 0.75rem 1rem 1rem 1rem;
}

#chat-image-preview-container {
  position: relative;
  align-self: start;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.05);
  padding: 4px;
  display: inline-flex;
  align-items: center;
}

#chat-image-preview {
  max-height: 80px;
  max-width: 80px;
  object-fit: cover;
  border-radius: 6px;
}

#chat-image-remove-btn {
  position: absolute;
  top: 2px;
  right: 2px;
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  cursor: pointer;
  font-size: 14px;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

#chat-attach-btn {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

#chat-attach-btn:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Accessibility Utilities */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}