/* =============================================================================
   LEARNVAULTX UNIFIED DESIGN SYSTEM
   Token-based design system using centralized theme tokens
   ============================================================================= */

/* =============================================================================
   BASE STYLES
   ============================================================================= */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* =============================================================================
   TYPOGRAPHY
   ============================================================================= */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--text-4xl);
}

h2 {
  font-size: var(--text-3xl);
}

h3 {
  font-size: var(--text-2xl);
}

h4 {
  font-size: var(--text-xl);
}

h5 {
  font-size: var(--text-lg);
}

h6 {
  font-size: var(--text-base);
}

p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-light);
}

code,
pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

/* =============================================================================
   BUTTONS
   ============================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: white;
  box-shadow: var(--btn-primary-shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-hover-shadow), var(--btn-primary-hover-glow);
}

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

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

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn-icon {
  padding: var(--space-3);
  border-radius: var(--radius-full);
}

.btn:disabled {
  opacity: var(--btn-disabled-opacity);
  cursor: not-allowed;
  transform: none !important;
}

/* =============================================================================
   CARDS
   ============================================================================= */

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
}

/* Futuristic Mode: Add backdrop filter */
[data-theme="futuristic"] .card {
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--card-hover-border);
  box-shadow: var(--card-hover-shadow);
}

/* Futuristic Mode: Add glow on hover */
[data-theme="futuristic"] .card:hover {
  box-shadow: var(--card-hover-shadow), var(--card-glow);
}

.card-flat {
  box-shadow: none;
}

.card-flat:hover {
  transform: none;
}

.card-glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

[data-theme="futuristic"] .card-glass {
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

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

.card-description {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

/* =============================================================================
   FORMS
   ============================================================================= */

.form-group {
  margin-bottom: var(--space-6);
}

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--input-focus-border);
  box-shadow: var(--input-focus-shadow);
}

/* Futuristic Mode: Add glow on focus */
[data-theme="futuristic"] .form-input:focus,
[data-theme="futuristic"] .form-select:focus,
[data-theme="futuristic"] .form-textarea:focus {
  box-shadow: var(--input-focus-shadow), var(--input-focus-glow);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  font-size: var(--text-sm);
  color: var(--error);
  margin-top: var(--space-2);
}

/* =============================================================================
   BADGES
   ============================================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background-color: var(--badge-primary-bg);
  color: var(--badge-primary-color);
}

.badge-success {
  background-color: var(--badge-success-bg);
  color: var(--badge-success-color);
}

.badge-warning {
  background-color: var(--badge-warning-bg);
  color: var(--badge-warning-color);
}

.badge-error {
  background-color: var(--badge-error-bg);
  color: var(--badge-error-color);
}

/* =============================================================================
   UTILITY CLASSES
   ============================================================================= */

/* Spacing */
.mt-1 {
  margin-top: var(--space-1);
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-3 {
  margin-top: var(--space-3);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

.mb-1 {
  margin-bottom: var(--space-1);
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-3 {
  margin-bottom: var(--space-3);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.mb-6 {
  margin-bottom: var(--space-6);
}

.mb-8 {
  margin-bottom: var(--space-8);
}

.p-2 {
  padding: var(--space-2);
}

.p-3 {
  padding: var(--space-3);
}

.p-4 {
  padding: var(--space-4);
}

.p-6 {
  padding: var(--space-6);
}

.p-8 {
  padding: var(--space-8);
}

/* Text Alignment */
.text-left {
  text-align: left;
}

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

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

/* Flex Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

/* Display */
.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

.hidden {
  display: none;
}

/* Overflow */
.overflow-hidden {
  overflow: hidden;
}

.overflow-auto {
  overflow: auto;
}

/* Cursor */
.cursor-pointer {
  cursor: pointer;
}

.cursor-not-allowed {
  cursor: not-allowed;
}

/* =============================================================================
   ANIMATIONS
   ============================================================================= */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

@keyframes glow {

  0%,
  100% {
    box-shadow: var(--glow-primary);
  }

  50% {
    box-shadow: var(--glow-primary-strong);
  }
}

.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft var(--transition-base) ease-out;
}

.animate-slide-in-right {
  animation: slideInRight var(--transition-base) ease-out;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

/* =============================================================================
   SCROLLBAR STYLING
   ============================================================================= */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Futuristic Mode: Glowing scrollbar */
[data-theme="futuristic"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  box-shadow: var(--glow-primary);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--bg-elevated) var(--bg-secondary);
}

/* =============================================================================
   TEXT SELECTION
   ============================================================================= */

::selection {
  background-color: rgba(96, 165, 250, 0.3);
  color: var(--text-primary);
}

::-moz-selection {
  background-color: rgba(96, 165, 250, 0.3);
  color: var(--text-primary);
}

/* =============================================================================
   GRADIENT UTILITIES
   ============================================================================= */

.gradient-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.gradient-accent {
  background: linear-gradient(135deg, var(--accent), var(--primary));
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Futuristic Mode: Add glow to gradient text */
[data-theme="futuristic"] .text-gradient {
  filter: drop-shadow(0 0 10px rgba(96, 165, 250, 0.3));
}