/* ==========================================================================
   zTyping Custom Text & Lesson Practice Screen CSS
   Modern, Cyberpunk Neon, Glassmorphism, Responsive UI/UX
   ========================================================================== */

/* Custom Text Main Container */
.custom-hub-container {
  max-width: 980px;
  margin: 0 auto 48px;
}

/* Hero Header Adjustments */
.custom-hero-badge-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 18px;
}

.custom-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  color: #ffffff;
  margin-bottom: 12px;
  text-align: center;
  letter-spacing: -0.02em;
}

.custom-hero-subtitle {
  font-size: clamp(0.95rem, 1.8vw, 1.12rem);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 30px;
  text-align: center;
}

/* Mode Selection Tabs (Segmented Control) */
.custom-mode-tabs {
  display: flex;
  background: rgba(14, 18, 34, 0.9);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-pill);
  padding: 6px;
  gap: 6px;
  margin: 0 auto 32px;
  max-width: 720px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.mode-tab-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--trans-fast);
  white-space: nowrap;
}

.mode-tab-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}

.mode-tab-btn.active {
  background: var(--grad-primary);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(217, 70, 239, 0.35);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Tab Panels */
.tab-content-panel {
  display: none;
  animation: fadeInPanel 0.25s ease-out forwards;
}

.tab-content-panel.active {
  display: block;
}

@keyframes fadeInPanel {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Filter Chips Bar (for Lessons tab) */
.lesson-filters-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  justify-content: center;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  background: rgba(20, 26, 48, 0.7);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.filter-chip:hover {
  background: rgba(30, 38, 70, 0.9);
  color: #ffffff;
  border-color: var(--border-medium);
}

.filter-chip.active {
  background: rgba(217, 70, 239, 0.18);
  border-color: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(217, 70, 239, 0.25);
}

/* Interactive Keyboard Row Visualizer */
.keyboard-row-visualizer {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 22px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.keyboard-row-visualizer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-primary);
}

.visualizer-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.visualizer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
}

.visualizer-subtitle {
  font-size: 0.84rem;
  color: var(--text-muted);
}

.virtual-keyboard {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  user-select: none;
}

.vk-row {
  display: flex;
  gap: 5px;
  justify-content: center;
  width: 100%;
}

.vk-key {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 2px 4px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.2s ease;
  position: relative;
}

.vk-key.wide {
  min-width: 54px;
  font-size: 0.72rem;
}

.vk-key.extra-wide {
  min-width: 80px;
  font-size: 0.72rem;
}

.vk-key.spacebar {
  min-width: 180px;
}

.vk-key.highlight-home {
  background: rgba(217, 70, 239, 0.25);
  border-color: #d946ef;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(217, 70, 239, 0.4);
}

.vk-key.highlight-top {
  background: rgba(6, 182, 212, 0.25);
  border-color: #06b6d4;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

.vk-key.highlight-bottom {
  background: rgba(16, 185, 129, 0.25);
  border-color: #10b981;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.4);
}

.vk-key.highlight-number {
  background: rgba(245, 158, 11, 0.25);
  border-color: #f59e0b;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.4);
}

.vk-key.home-bump::after {
  content: "";
  position: absolute;
  bottom: 4px;
  width: 10px;
  height: 2px;
  background: #ffffff;
  border-radius: 1px;
}

.finger-guide-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.finger-hand-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hand-badge {
  font-weight: 700;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
}

/* Lesson Cards Grid */
.lessons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.lesson-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--trans-fast), border-color var(--trans-fast), box-shadow var(--trans-fast);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.lesson-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
  box-shadow: 0 8px 24px rgba(217, 70, 239, 0.15);
}

.lesson-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.lesson-title {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.3;
}

.lesson-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  white-space: nowrap;
}

.lesson-badge.beginner {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.lesson-badge.medium {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.lesson-badge.advanced {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.lesson-badge.pro {
  background: rgba(217, 70, 239, 0.15);
  color: var(--accent-primary);
  border: 1px solid rgba(217, 70, 239, 0.3);
}

.lesson-keys-strip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-primary);
  background: rgba(217, 70, 239, 0.08);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
  align-self: flex-start;
}

.lesson-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 14px;
  flex-grow: 1;
}

.lesson-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: auto;
}

.btn-lesson-play {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--grad-primary);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all var(--trans-fast);
  text-decoration: none;
}

.btn-lesson-play:hover {
  filter: brightness(1.12);
  transform: scale(1.02);
}

.btn-lesson-view {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--trans-fast);
}

.btn-lesson-view:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border-color: var(--border-medium);
}

/* Custom Text & Options Container */
.custom-interactive-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  margin-bottom: 28px;
}

@media (max-width: 640px) {
  .custom-interactive-panel {
    padding: 20px 16px;
  }
}

/* Textarea with Stats Toolbar */
.textarea-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  margin-bottom: 18px;
}

.textarea-actions-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.textarea-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: #ffffff;
}

.textarea-quick-tools {
  display: flex;
  gap: 8px;
}

.quick-tool-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--text-secondary);
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.quick-tool-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border-color: var(--border-medium);
}

.custom-textarea {
  width: 100%;
  min-height: 180px;
  padding: 14px 16px;
  background: rgba(10, 14, 28, 0.85);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: #f1f5f9;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.6;
  resize: vertical;
  transition: border-color var(--trans-fast), box-shadow var(--trans-fast);
}

.custom-textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 16px rgba(217, 70, 239, 0.2);
}

/* Real-Time Stats Bar */
.text-stats-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.stat-value {
  color: #ffffff;
  font-weight: 700;
  font-family: var(--font-mono);
}

/* Options Switchers / Checkboxes (Clean & Friendly) */
.options-fieldset {
  margin: 24px 0;
  padding: 18px 20px;
  background: rgba(10, 14, 28, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.options-fieldset-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.option-toggle-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.option-checkbox {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

.option-text-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.option-main-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: #ffffff;
}

.option-sub-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Launch Action Button */
.launch-cta-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: var(--radius-md);
  background: var(--grad-primary);
  color: #ffffff;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  border: 1px solid rgba(255, 255, 255, 0.22);
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(217, 70, 239, 0.4);
  transition: all var(--trans-fast);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.launch-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(217, 70, 239, 0.6);
  filter: brightness(1.1);
}

.launch-cta-btn:active {
  transform: translateY(0);
}

/* Status / Alert Banner */
.custom-status-msg {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 0.88rem;
  display: none;
}

.custom-status-msg.error {
  display: block;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.35);
  color: #fecdd3;
}

.custom-status-msg.info {
  display: block;
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.35);
  color: #cffafe;
}

/* Wikipedia / Webpage Quick Picks */
.wiki-quick-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.wiki-topic-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.wiki-topic-btn:hover {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--accent-cyan);
  color: #ffffff;
}

/* Touch Typing Fundamentals Guide Card */
.touch-typing-guide-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-top: 36px;
  box-shadow: var(--shadow-sm);
}

.guide-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.guide-step-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
}

.guide-step-num {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--grad-primary);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.guide-step-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.guide-step-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .custom-mode-tabs {
    flex-direction: column;
    border-radius: var(--radius-md);
    padding: 6px;
  }
  
  .mode-tab-btn {
    border-radius: var(--radius-sm);
  }
  
  .vk-key {
    min-width: 24px;
    height: 32px;
    font-size: 0.7rem;
    padding: 1px;
  }
  
  .vk-key.wide {
    min-width: 36px;
  }
  
  .vk-key.extra-wide {
    min-width: 50px;
  }
  
  .vk-key.spacebar {
    min-width: 110px;
  }
}