/**
 * SyntaxArena Component Library
 * Source of truth: docs/DESIGN_SYSTEM.md
 */

/* ==========================================================================
   TACTILE 3D BUTTONS
   ========================================================================== */
.btn-arcade {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-lg);
  border: 2px solid;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  white-space: nowrap;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast),
              background-color var(--transition-base),
              border-color var(--transition-base);
}

.btn-arcade:hover {
  text-decoration: none;
}

/* Primary Button (Electric Cyan) */
.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary-edge);
  color: var(--text-inverse);
  box-shadow: var(--shadow-tactile-md) var(--color-primary-edge);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-tactile-lg) var(--color-primary-edge);
  background-color: var(--color-primary-hover);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: var(--shadow-depressed) var(--color-primary-edge);
}

/* Success Button (Terminal Emerald) */
.btn-success {
  background-color: var(--color-success);
  border-color: var(--color-success-edge);
  color: var(--text-primary);
  box-shadow: var(--shadow-tactile-md) var(--color-success-edge);
}

.btn-success:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-tactile-lg) var(--color-success-edge);
  background-color: var(--color-success-hover);
}

.btn-success:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: var(--shadow-depressed) var(--color-success-edge);
}

/* Danger Button (Coral Flare) */
.btn-danger {
  background-color: var(--color-danger);
  border-color: var(--color-danger-edge);
  color: var(--text-primary);
  box-shadow: var(--shadow-tactile-md) var(--color-danger-edge);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-tactile-lg) var(--color-danger-edge);
  background-color: var(--color-danger-hover);
}

.btn-danger:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: var(--shadow-depressed) var(--color-danger-edge);
}

/* Neutral / Surface Button */
.btn-neutral {
  background-color: var(--color-neutral);
  border-color: var(--border-strong);
  color: var(--text-primary);
  box-shadow: var(--shadow-tactile-md) var(--color-neutral-edge);
}

.btn-neutral:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-tactile-lg) var(--color-neutral-edge);
  background-color: var(--color-neutral-hover);
  border-color: var(--color-primary);
}

.btn-neutral:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: var(--shadow-depressed) var(--color-neutral-edge);
}

/* Outline Ghost Button */
.btn-outline {
  background-color: transparent;
  border-color: var(--border-strong);
  color: var(--text-secondary);
  box-shadow: none;
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--bg-surface-raised);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn-outline:active:not(:disabled) {
  transform: translateY(1px);
}

/* Button Sizes */
.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-tactile-sm) var(--border-strong);
}

.btn-lg {
  padding: 1.0rem 2.0rem;
  font-size: var(--text-lg);
}

/* Disabled State */
.btn-arcade:disabled,
.btn-arcade.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
  pointer-events: none;
}

/* ==========================================================================
   CARDS & SURFACES
   ========================================================================== */
.card {
  background-color: var(--bg-surface-base);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-elevation-card);
  transition: border-color var(--transition-base), transform var(--transition-fast);
}

.card-raised {
  background-color: var(--bg-surface-raised);
  border-color: var(--border-strong);
}

.card-interactive {
  cursor: pointer;
  user-select: none;
}

.card-interactive:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0;
}

.card-body {
  color: var(--text-secondary);
}

.card-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ==========================================================================
   BADGES & STATUS PILLS
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 10px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  border: 1px solid;
}

.badge-cyan {
  background-color: rgba(0, 229, 255, 0.12);
  color: var(--color-primary);
  border-color: var(--color-primary-edge);
}

.badge-emerald {
  background-color: rgba(16, 185, 129, 0.12);
  color: var(--color-success);
  border-color: var(--color-success-edge);
}

.badge-amber {
  background-color: rgba(245, 158, 11, 0.12);
  color: var(--color-warning);
  border-color: var(--color-warning-edge);
}

.badge-coral {
  background-color: rgba(239, 68, 68, 0.12);
  color: var(--color-danger);
  border-color: var(--color-danger-edge);
}

.badge-violet {
  background-color: rgba(139, 92, 246, 0.12);
  color: var(--color-violet);
  border-color: var(--color-violet-edge);
}

/* Language Tags */
.tag-lang {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 12px;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  border: 2px solid;
}

.tag-python {
  background-color: rgba(55, 118, 171, 0.15);
  border-color: var(--lang-python);
  color: #79C0FF;
}

.tag-c {
  background-color: rgba(101, 154, 210, 0.15);
  border-color: var(--lang-c-accent);
  color: #A5D6FF;
}

.tag-cpp {
  background-color: rgba(0, 89, 156, 0.15);
  border-color: var(--lang-cpp);
  color: #79C0FF;
}

.tag-java {
  background-color: rgba(234, 45, 46, 0.15);
  border-color: var(--lang-java);
  color: #FFA657;
}

.tag-cyber {
  background-color: rgba(16, 185, 129, 0.15);
  border-color: var(--lang-cyber);
  color: #34D399;
}

.tag-javascript {
  background-color: rgba(247, 223, 30, 0.15);
  border-color: var(--lang-javascript);
  color: #FBBF24;
}

.tag-rust {
  background-color: rgba(222, 165, 132, 0.15);
  border-color: var(--lang-rust);
  color: #F87171;
}

.tag-sql {
  background-color: rgba(51, 103, 145, 0.15);
  border-color: var(--lang-sql);
  color: #38BDF8;
}

.tag-typescript {
  background-color: rgba(49, 120, 198, 0.15);
  border-color: var(--lang-typescript);
  color: #58A6FF;
}

.tag-go {
  background-color: rgba(0, 173, 216, 0.15);
  border-color: var(--lang-go);
  color: #00ADD8;
}

.tag-html {
  background-color: rgba(227, 79, 38, 0.15);
  border-color: var(--lang-html);
  color: #FF6B4A;
}

.tag-asm {
  background-color: rgba(245, 158, 11, 0.15);
  border-color: var(--lang-asm);
  color: #FBBF24;
}

/* ==========================================================================
   FORM CONTROLS & INPUTS
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select {
  width: 100%;
  padding: 0.75rem 1.0rem;
  font-family: var(--font-body);
  font-size: var(--text-base);
  background-color: var(--bg-surface-raised);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

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

.form-input::placeholder {
  color: var(--text-muted);
}

.form-help {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* ==========================================================================
   MODAL / DIALOG COMPONENT
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(11, 15, 23, 0.75);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.modal-dialog {
  background-color: var(--bg-surface-base);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-xl);
  max-width: 580px;
  width: 100%;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-elevation-modal);
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition-fast);
}

.modal-body {
  overflow-y: auto;
  padding: var(--space-6);
  flex: 1;
}

.modal-backdrop.is-open .modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}


.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* Onboarding Modal Responsive Alignment & Button Layout */
.onboarding-dialog {
  max-width: 660px !important;
  width: min(660px, 94vw);
  max-height: 90vh;
}

.onboarding-footer {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.85rem 1.25rem;
  background-color: var(--bg-surface-raised);
  border-top: 1px solid var(--border-subtle);
}

.onboarding-footer-left,
.onboarding-footer-right {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .onboarding-footer {
    flex-direction: column-reverse;
    align-items: stretch;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
  }
  .onboarding-footer-left,
  .onboarding-footer-right {
    width: 100%;
    justify-content: stretch;
  }
  .onboarding-footer-left > button,
  .onboarding-footer-right > button {
    flex: 1;
    text-align: center;
    justify-content: center;
  }
}

/* ==========================================================================
   TOAST NOTIFICATION SYSTEM
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 400px;
  background-color: var(--bg-surface-overlay);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: var(--shadow-elevation-modal);
  transform: translateY(20px);
  opacity: 0;
  transition: transform var(--transition-fast), opacity var(--transition-base);
}

.toast.is-visible {
  transform: translateY(0);
  opacity: 1;
}

.toast-success {
  border-color: var(--color-success-edge);
}

.toast-error {
  border-color: var(--color-danger-edge);
}

.toast-info {
  border-color: var(--color-primary-edge);
}

/* ==========================================================================
   PLACEHOLDER CARDS (FOUNDATION STAGE)
   ========================================================================== */
.placeholder-card {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  background-color: rgba(26, 34, 52, 0.4);
}

.placeholder-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-4);
  color: var(--color-primary);
}

.placeholder-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.placeholder-desc {
  max-width: 600px;
  margin: 0 auto var(--space-6);
  color: var(--text-secondary);
}

/* ==========================================================================
   INTERACTIVE SELECTABLE CARDS (BATCH 3)
   ========================================================================== */
.card-selectable {
  position: relative;
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface-raised);
  padding: var(--space-5);
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
  outline: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-tactile-sm) var(--border-strong);
}

.card-selectable:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-edge);
  box-shadow: var(--shadow-tactile-md) var(--color-primary-edge);
}

.card-selectable:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.card-selectable.is-selected {
  border-color: var(--color-primary);
  background-color: rgba(0, 229, 255, 0.06);
  box-shadow: var(--shadow-tactile-md) var(--color-primary-edge), 0 0 16px var(--color-primary-glow);
}

.card-selectable .selection-indicator {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface-base);
  color: transparent;
  font-size: 14px;
  font-weight: 800;
  transition: all var(--transition-fast);
}

.card-selectable.is-selected .selection-indicator {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

.card-selectable.is-locked {
  opacity: 0.65;
  cursor: not-allowed;
  border-style: dashed;
}

.card-selectable.is-locked:hover {
  transform: none;
  border-color: var(--border-strong);
  box-shadow: var(--shadow-tactile-sm) var(--border-strong);
}

.card-selectable.is-locked .selection-indicator {
  background-color: var(--bg-surface-base);
  color: var(--text-muted);
  border-color: var(--border-subtle);
  font-size: 11px;
  line-height: 1;
}

/* ==========================================================================
   ONBOARDING STEP WIZARD
   ========================================================================== */
.wizard-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  margin-bottom: var(--space-6);
  padding: 0 var(--space-2);
}

.wizard-progress::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 20px;
  right: 20px;
  height: 2px;
  background-color: var(--border-strong);
  transform: translateY(-50%);
  z-index: 1;
}

.wizard-step-node {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  background-color: var(--bg-surface-base);
  padding: 0 var(--space-2);
}

.wizard-step-circle {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border-strong);
  background-color: var(--bg-surface-raised);
  color: var(--text-muted);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.wizard-step-node.is-active .wizard-step-circle {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--text-inverse);
  box-shadow: 0 0 10px var(--color-primary-glow);
}

.wizard-step-node.is-complete .wizard-step-circle {
  border-color: var(--color-success);
  background-color: var(--color-success);
  color: var(--text-primary);
}

.wizard-step-label {
  font-size: 11px;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-muted);
}

.wizard-step-node.is-active .wizard-step-label {
  color: var(--color-primary);
}

.wizard-pane {
  display: none;
}

.wizard-pane.is-active {
  display: block;
  animation: fadeIn 0.25s ease-out;
}

/* ==========================================================================
   AVATAR SELECTOR GRID
   ========================================================================== */
.avatar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-3);
}

@media (max-width: 480px) {
  .avatar-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.avatar-option-btn {
  background-color: var(--bg-surface-raised);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  transition: all var(--transition-fast);
  outline: none;
  text-align: center;
  color: var(--text-primary);
}

.avatar-option-btn:hover {
  transform: translateY(-2px);
  border-color: var(--border-focus);
}

.avatar-option-btn:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.avatar-option-btn.is-selected {
  border-color: var(--color-primary);
  background-color: rgba(0, 229, 255, 0.1);
  box-shadow: var(--shadow-tactile-sm) var(--color-primary-edge);
}

.avatar-preview-lg {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-neutral);
  border: 2px solid var(--border-strong);
}

/* ==========================================================================
   PROGRESSION PREVIEW ROADMAP (BATCH 3)
   ========================================================================== */
.roadmap-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  position: relative;
  margin-top: var(--space-6);
}

@media (max-width: 768px) {
  .roadmap-container {
    grid-template-columns: 1fr;
  }
}

.roadmap-card {
  background-color: var(--bg-surface-raised);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.roadmap-card.tier-active {
  border-color: var(--color-primary);
  box-shadow: 0 0 16px var(--color-primary-glow);
}

.roadmap-card.tier-locked {
  opacity: 0.75;
  border-style: dashed;
}

.roadmap-badge-watermark {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  font-size: 11px;
}

/* ==========================================================================
   GAMEPLAY ARENA INTERFACE (BATCH 5)
   ========================================================================== */

/* Accessible Progress Bar */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background-color: var(--color-neutral);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  margin-top: var(--space-3);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  border-radius: var(--radius-full);
  transition: width var(--transition-base) ease-out;
}

/* Code Terminal Enhancement */
.code-terminal {
  background-color: var(--bg-code-terminal);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  overflow: hidden;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.4);
}

.code-terminal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background-color: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.code-terminal-pre {
  margin: 0;
  padding: var(--space-3) 0;
  background: transparent;
  border: none;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.code-line {
  display: flex;
  padding: 2px var(--space-4);
  transition: background-color var(--transition-fast);
}

.code-line-number {
  color: var(--text-muted);
  user-select: none;
  width: 2.5rem;
  text-align: right;
  margin-right: 1.25rem;
  flex-shrink: 0;
  opacity: 0.6;
}

.code-line-text {
  flex: 1;
  white-space: pre;
  color: var(--text-primary);
}

/* Find the Bug: Interactive Line Selection */
.code-line.is-clickable {
  cursor: pointer;
}

.code-line.is-clickable:hover {
  background-color: rgba(239, 68, 68, 0.12);
}

.code-line.is-clickable:hover .code-line-number {
  color: var(--color-danger);
  font-weight: 700;
  opacity: 1;
}

.code-line.is-selected-bug {
  background-color: rgba(239, 68, 68, 0.22);
  border-left: 3px solid var(--color-danger);
}

.code-line.is-selected-bug .code-line-number {
  color: var(--color-danger);
  font-weight: 800;
  opacity: 1;
}

/* Find the Bug Line Selector Bar */
.line-selector-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-3) var(--space-4);
  background-color: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}

.line-selector-title {
  font-size: var(--text-xs);
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.line-pills-container {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.line-pill-btn {
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: var(--radius-sm);
  background-color: var(--color-neutral);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.line-pill-btn:hover {
  border-color: var(--color-danger);
  color: var(--color-danger);
  transform: translateY(-1px);
}

.line-pill-btn.is-active {
  background-color: var(--color-danger);
  border-color: var(--color-danger-edge);
  color: var(--text-inverse);
  box-shadow: 0 0 8px var(--color-danger-glow);
}

/* Option Cards (MCQ & Predict Output) */
.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.option-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-neutral);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-tactile-sm) var(--color-neutral-edge);
  outline: none;
  min-height: 52px;
}

.option-card:hover:not(:disabled) {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-tactile-md) var(--color-neutral-edge);
}

.option-card:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.option-card.is-selected {
  background-color: rgba(0, 229, 255, 0.12);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-tactile-md) var(--color-primary-edge);
  font-weight: 700;
}

.option-card.is-correct {
  background-color: rgba(16, 185, 129, 0.15);
  border-color: var(--color-success);
  color: var(--color-success);
}

.option-card.is-incorrect {
  background-color: rgba(239, 68, 68, 0.15);
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.option-key-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xs);
  flex-shrink: 0;
  color: var(--color-primary);
}

.option-card.is-selected .option-key-badge {
  background-color: var(--color-primary);
  color: var(--text-inverse);
  border-color: var(--color-primary-edge);
}

/* Fill the Code Input Field */
.fill-code-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.fill-code-input {
  width: 100%;
  padding: 0.85rem 1.25rem;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 700;
  background-color: var(--bg-code-terminal);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.fill-code-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 12px var(--color-primary-glow);
}

.fill-code-input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
  font-style: italic;
}

.token-chips-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.token-chip {
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background-color: var(--color-neutral);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.token-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

/* Feedback & Explanation Card */
.feedback-panel {
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  animation: slideUp var(--transition-base) forwards;
}

.feedback-panel-correct {
  background-color: rgba(16, 185, 129, 0.12);
  border: 2px solid var(--color-success-edge);
}

.feedback-panel-incorrect {
  background-color: rgba(239, 68, 68, 0.12);
  border: 2px solid var(--color-danger-edge);
}

.feedback-panel-retry {
  background-color: rgba(245, 158, 11, 0.12);
  border: 2px solid var(--color-warning-edge);
}

.feedback-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.feedback-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  margin: 0;
}

.feedback-explanation {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

/* Hint Drawer */
.hint-drawer {
  background-color: rgba(245, 158, 11, 0.12);
  border: 1px solid var(--color-warning-edge);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-5);
  animation: fadeIn var(--transition-fast) forwards;
}

.hint-drawer-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-warning);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
}

.hint-drawer-body {
  font-size: var(--text-sm);
  color: var(--text-primary);
  line-height: 1.5;
  margin: 0;
}

/* Timer Urgency Pulse */
.timer-urgent {
  color: var(--color-danger) !important;
  animation: timerPulse 0.9s infinite ease-in-out;
}

/* In-progress Run Resume Banner */
.resume-banner {
  background-color: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--color-primary-edge);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   CYBER PYTHON LIVE SANDBOX DRAWER & FLOATING TRIGGER
   ========================================================================== */
.sandbox-trigger-btn {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--bg-surface-raised), var(--bg-surface));
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  padding: 0.65rem 1.15rem;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.35);
  transition: all var(--transition-base);
}

.sandbox-trigger-btn:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 6px 25px rgba(0, 229, 255, 0.5);
  border-color: var(--color-primary-light);
}

.sandbox-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 15, 30, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.sandbox-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sandbox-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(580px, 92vw);
  background: var(--bg-surface);
  border-left: 2px solid var(--color-primary);
  box-shadow: -10px 0 35px rgba(0, 0, 0, 0.65);
  z-index: 210;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

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

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

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

.sandbox-editor-wrapper {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-code-terminal);
}

.sandbox-code-editor {
  width: 100%;
  min-height: 220px;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  padding: 0.85rem;
  border: none;
  outline: none;
  resize: vertical;
  tab-size: 4;
}

.sandbox-terminal {
  background: var(--bg-surface-sunken);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  font-family: var(--font-mono);
  font-size: 12px;
  min-height: 140px;
  max-height: 250px;
  overflow-y: auto;
}

/* ==========================================================================
   STAGE ROADMAP & BOSS STAGE CARDS
   ========================================================================== */
.stage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.stage-card {
  background: var(--bg-surface-raised);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  color: var(--text-primary);
}

.stage-card:hover:not(.is-locked) {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.2);
}

.stage-card.is-locked {
  opacity: 0.65;
  cursor: not-allowed;
  border-style: dashed;
}

.stage-card.is-boss {
  border-color: var(--color-danger);
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.08), var(--bg-surface-raised));
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.25);
}

.stage-card.is-boss:hover:not(.is-locked) {
  border-color: var(--color-danger-light);
  box-shadow: 0 0 25px rgba(239, 68, 68, 0.45);
}

.boss-pulse {
  animation: bossFlame 1.5s infinite alternate ease-in-out;
}

@keyframes bossFlame {
  0% { box-shadow: 0 0 12px rgba(239, 68, 68, 0.3); border-color: var(--color-danger); }
  100% { box-shadow: 0 0 24px rgba(239, 68, 68, 0.6); border-color: #fb7185; }
}

.star-rating-display {
  display: inline-flex;
  gap: 3px;
  font-size: 1rem;
}

/* Challenge Showcase Horizontal Row (Single Row Layout) */
.challenge-showcase-row {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  padding-bottom: 1rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--border-subtle) transparent;
}

.challenge-showcase-row::-webkit-scrollbar {
  height: 6px;
}

.challenge-showcase-row::-webkit-scrollbar-track {
  background: transparent;
}

.challenge-showcase-row::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 3px;
}

.challenge-showcase-row .card {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.challenge-showcase-row .card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-tactile-lg) var(--color-primary-edge);
}

/* ==========================================================================
   CYBER ACADEMY (LEARN MODE) STYLES
   ========================================================================== */
.academy-layout {
  display: grid;
  grid-template-columns: 290px 1fr;
  gap: var(--space-6);
  align-items: start;
}

@media (max-width: 880px) {
  .academy-layout {
    grid-template-columns: 1fr;
  }
}

.lesson-nav-menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.lesson-nav-btn {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 100%;
}

.lesson-nav-btn:hover {
  background: var(--bg-surface-raised);
  border-color: var(--color-primary-edge);
  color: var(--text-primary);
  transform: translateX(2px);
}

.lesson-nav-btn.is-active {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
}

.lesson-nav-btn.is-completed .lesson-status-icon {
  color: var(--color-success);
  font-weight: bold;
}

.lesson-status-icon {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.4;
  flex-shrink: 0;
}

.lesson-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}

.lesson-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lesson-nav-btn.is-active .lesson-title {
  color: var(--color-primary);
}

.lesson-sub {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Slide Progress Dots */
.slide-dots-container {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.slide-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-subtle);
  border: 1px solid var(--border-strong);
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-fast);
}

.slide-dot:hover {
  transform: scale(1.2);
  border-color: var(--color-primary);
}

.slide-dot.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary-edge);
  box-shadow: 0 0 8px var(--color-primary);
  transform: scale(1.25);
}

.slide-dot.is-passed {
  background: var(--color-success);
  border-color: var(--color-success-edge);
}

/* Inline Code in Academy Prose */
.inline-code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
}

/* Drill Option Cards */
.drill-option-card {
  transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.drill-option-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.drill-option-card.is-correct {
  border-color: var(--color-success) !important;
  background: rgba(16, 185, 129, 0.15) !important;
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
}

.drill-option-card.is-incorrect {
  border-color: var(--color-danger) !important;
  background: rgba(239, 68, 68, 0.15) !important;
}

/* =============================================================================
   ACADEMY LIVE CODE RUNNER & TERMINAL STYLES
   ============================================================================= */
.code-terminal-editor {
  width: 100%;
  min-height: 140px;
  max-height: 380px;
  background: var(--bg-surface-base);
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  resize: vertical;
  outline: none;
  tab-size: 4;
  white-space: pre;
}

.code-terminal-editor:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.25);
}

.code-terminal-output {
  margin-top: var(--space-3);
  background: #090d16;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.6);
}

.code-terminal-output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px var(--space-3);
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.code-terminal-output-body {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: #a7f3d0;
  max-height: 200px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.code-terminal-output-body.is-error {
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.05);
}

/* =============================================================================
   ACADEMY GRADUATION DIPLOMA MODAL & CERTIFICATE STYLES
   ============================================================================= */
.diploma-modal-dialog {
  max-width: 820px;
  width: 95%;
  margin: 2rem auto;
}

.diploma-certificate {
  position: relative;
  background: radial-gradient(circle at 50% 20%, #161e31 0%, #0a0f1d 100%);
  border: 4px solid var(--color-primary-edge);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: 0 0 35px rgba(0, 229, 255, 0.25), inset 0 0 20px rgba(0, 0, 0, 0.8);
  overflow: hidden;
}

.diploma-border-inner {
  border: 2px dashed rgba(0, 229, 255, 0.35);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  position: relative;
  background: rgba(10, 16, 29, 0.5);
}

.diploma-header {
  margin-bottom: var(--space-5);
}

.diploma-badge-logo {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: var(--space-2);
  filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.5));
}

.diploma-inst-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

.diploma-heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #ffffff 0%, var(--color-cyan) 60%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0 0 var(--space-1) 0;
}

.diploma-sub-heading {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.diploma-body {
  margin: var(--space-5) 0;
}

.diploma-awarded-text {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-2);
}

.diploma-callsign {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 900;
  color: #fbbf24;
  text-shadow: 0 0 16px rgba(251, 191, 36, 0.5);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.diploma-completion-text {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.diploma-track-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary-edge);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.diploma-curriculum-summary {
  font-size: var(--text-xs);
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.6;
}

.diploma-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-5);
  margin-top: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.diploma-meta-block {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.diploma-meta-label {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.diploma-meta-val {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-primary);
  font-weight: 700;
}

.diploma-seal-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.diploma-seal {
  width: 76px;
  height: 76px;
  border-radius: var(--radius-full);
  border: 3px double #fbbf24;
  background: radial-gradient(circle, #78350f 0%, #1e1b4b 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(251, 191, 36, 0.4);
}

.diploma-seal-stars {
  font-size: 9px;
  color: #fbbf24;
  line-height: 1;
}

.diploma-seal-text {
  font-size: 9px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #fef3c7;
  text-align: center;
  line-height: 1.2;
}

.diploma-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

/* Print Styles for Certificate */
@media print {
  body * {
    visibility: hidden;
  }
  #modal-track-diploma,
  #modal-track-diploma * {
    visibility: visible;
  }
  #modal-track-diploma {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: white !important;
    display: block !important;
  }
  .diploma-certificate {
    background: #ffffff !important;
    border: 3px solid #111827 !important;
    color: #111827 !important;
    box-shadow: none !important;
  }
  .diploma-border-inner {
    border: 2px dashed #374151 !important;
    background: transparent !important;
  }
  .diploma-heading {
    color: #111827 !important;
    -webkit-text-fill-color: #111827 !important;
  }
  .diploma-callsign {
    color: #b45309 !important;
    text-shadow: none !important;
  }

/* ==========================================================================
   DAILY HACKER GAUNTLET & 7-DAY PUNCH CARD STYLES
   ========================================================================== */
.daily-punch-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
  margin-bottom: 1.5rem;
}

.punch-card {
  background: var(--bg-surface-raised);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 0.85rem 0.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  position: relative;
  transition: all var(--transition-fast);
  min-height: 140px;
}

.punch-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(0, 229, 255, 0.15);
}

.punch-card.is-claimed {
  border-color: var(--color-success);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.12) 0%, var(--bg-surface-raised) 100%);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.2);
}

.punch-card.is-active {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.15) 0%, var(--bg-surface-raised) 100%);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.35);
  animation: pulseCardGlow 2.5s infinite alternate ease-in-out;
}

@keyframes pulseCardGlow {
  0% { box-shadow: 0 0 8px rgba(0, 229, 255, 0.25); }
  100% { box-shadow: 0 0 20px rgba(0, 229, 255, 0.55), 0 0 3px #00e5ff; }
}

.punch-card.is-locked {
  opacity: 0.6;
  filter: grayscale(40%);
}

.punch-day-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.punch-card.is-active .punch-day-label {
  color: var(--color-primary);
}

.punch-card.is-claimed .punch-day-label {
  color: var(--color-success);
}

.punch-icon {
  font-size: 1.85rem;
  margin: 0.4rem 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.punch-card:hover .punch-icon {
  transform: scale(1.15);
}

.punch-reward-val {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.punch-card.is-claimed .punch-reward-val {
  color: var(--color-success);
}

.punch-status-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  margin-top: 0.4rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.daily-countdown-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid var(--color-violet);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-violet);
  font-weight: 700;
}

.gauntlet-modal-dialog {
  max-width: 680px;
  width: min(680px, 94vw);
}

.gauntlet-question-box {
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.gauntlet-options-grid {
  display: grid;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

/* ==========================================================================
   FEATURE 2: ASYNCHRONOUS GHOST SPEED DUEL (ARENA HUD)
   ========================================================================== */
.ghost-duel-rail {
  margin-top: var(--space-3);
  padding: 0.65rem 0.85rem;
  background: rgba(13, 22, 38, 0.65);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-fast);
}

.ghost-duel-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: var(--text-xs);
}

.ghost-duel-racer {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-family: var(--font-display);
}

.ghost-duel-racer.player-racer {
  color: var(--color-primary);
}

.ghost-duel-racer.ai-racer {
  color: var(--color-violet);
}

.ghost-racer-avatar {
  font-size: 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ghost-duel-split-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-medium);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.ghost-duel-split-badge.is-ahead {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--color-success);
  color: var(--color-success);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.ghost-duel-split-badge.is-behind {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--color-danger);
  color: var(--color-danger);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.3);
}

.ghost-duel-split-badge.is-even {
  background: rgba(0, 229, 255, 0.15);
  border-color: var(--color-cyan);
  color: var(--color-cyan);
}

.ghost-track-container {
  position: relative;
  height: 20px;
  display: flex;
  align-items: center;
}

.ghost-track-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  z-index: 1;
}

.ghost-runner-pin {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  font-size: 15px;
  transition: left 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

.ghost-runner-pin.player-pin {
  filter: drop-shadow(0 0 6px var(--color-primary-glow));
}

.ghost-runner-pin.ghost-pin {
  opacity: 0.85;
  filter: drop-shadow(0 0 6px var(--color-violet));
}

/* ==========================================================================
   FEATURE 3: VISUAL MEMORY & POINTER INSPECTOR (ACADEMY & SANDBOX)
   ========================================================================== */
.visual-memory-card {
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.memory-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.memory-column {
  background: rgba(13, 22, 38, 0.7);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.memory-column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.mem-header-title {
  color: var(--text-primary);
}

.mem-header-addr {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-cyan);
}

.memory-frame-box {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 140px;
}

.mem-var-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 10px;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.mem-var-row:hover,
.mem-var-row.is-hovered-pointer {
  border-color: var(--color-cyan);
  background: rgba(0, 229, 255, 0.08);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
  transform: translateX(2px);
}

.mem-var-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mem-var-name {
  font-weight: 800;
  color: var(--color-primary);
}

.mem-var-type {
  font-size: 10px;
  color: var(--text-muted);
}

.mem-var-cells {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.mem-var-addr {
  font-size: 10px;
  color: var(--text-muted);
}

.mem-var-val {
  font-weight: 700;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.mem-var-val.is-ptr-val {
  color: var(--color-violet);
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.mem-heap-block {
  padding: 8px 10px;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mem-heap-block.is-highlighted-target {
  border-color: var(--color-violet);
  background: rgba(139, 92, 246, 0.12);
  box-shadow: 0 0 16px rgba(139, 92, 246, 0.35);
  transform: scale(1.02);
}

.mem-heap-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  margin-bottom: 0.4rem;
}

.mem-heap-label {
  font-weight: 700;
  color: var(--color-violet);
  font-family: var(--font-display);
}

.mem-heap-addr {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

.mem-heap-data-row {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
}

.mem-data-cell {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 2px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-mono);
}

.mem-data-idx {
  font-size: 9px;
  color: var(--text-muted);
}

.mem-data-val {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-success);
}

.mem-heap-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.35rem;
}