/**
 * KALKI AVATAR - DESIGN SYSTEM
 * Core styles, variables, and components
 */

/* =====================================================
   CSS VARIABLES
   ===================================================== */
:root {
  /* Colors */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899);
  --gradient-secondary: linear-gradient(135deg, #8b5cf6, #ec4899);
  --gradient-success: linear-gradient(135deg, #10b981, #059669);

  /* Dark Theme (Default) */
  --bg-primary: #0f0f23;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #232342;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --border: rgba(255, 255, 255, 0.1);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border: rgba(0, 0, 0, 0.1);
}

/* =====================================================
   BASE STYLES
   ===================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

/* =====================================================
   TYPOGRAPHY
   ===================================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5em;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1rem;
}

h6 {
  font-size: 0.875rem;
}

.text-primary {
  color: var(--primary) !important;
}

.text-success {
  color: var(--success) !important;
}

.text-warning {
  color: var(--warning) !important;
}

.text-danger {
  color: var(--danger) !important;
}

.text-muted {
  color: var(--text-muted) !important;
}

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

/* =====================================================
   BUTTONS
   ===================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
  color: white;
}

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

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

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

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

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

.btn-danger:hover {
  background: #dc2626;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

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

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* =====================================================
   FORM ELEMENTS
   ===================================================== */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2371717a' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.375rem;
}

.form-error {
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: 0.375rem;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

/* =====================================================
   CARDS
   ===================================================== */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.3);
}

.card-header {
  padding-bottom: 1rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
}

.card-body {
  flex: 1;
}

.card-footer {
  padding-top: 1rem;
  margin-top: 1rem;
  border-top: 1px solid var(--border);
}

/* =====================================================
   BADGES
   ===================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge-primary {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.badge-info {
  background: rgba(59, 130, 246, 0.15);
  color: var(--info);
}

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

/* Display */
.d-flex {
  display: flex;
}

.d-block {
  display: block;
}

.d-none {
  display: none;
}

.d-grid {
  display: grid;
}

/* Flexbox */
.flex-column {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

.align-items-start {
  align-items: flex-start;
}

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

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

.gap-1 {
  gap: 0.25rem;
}

.gap-2 {
  gap: 0.5rem;
}

.gap-3 {
  gap: 1rem;
}

.gap-4 {
  gap: 1.5rem;
}

/* Spacing */
.mt-1 {
  margin-top: 0.25rem;
}

.mt-2 {
  margin-top: 0.5rem;
}

.mt-3 {
  margin-top: 1rem;
}

.mt-4 {
  margin-top: 1.5rem;
}

.mb-1 {
  margin-bottom: 0.25rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-3 {
  margin-bottom: 1rem;
}

.mb-4 {
  margin-bottom: 1.5rem;
}

.me-1 {
  margin-right: 0.25rem;
}

.me-2 {
  margin-right: 0.5rem;
}

.ms-auto {
  margin-left: auto;
}

.p-0 {
  padding: 0;
}

.p-3 {
  padding: 1rem;
}

.p-4 {
  padding: 1.5rem;
}

/* Width */
.w-100 {
  width: 100%;
}

/* =====================================================
   ANIMATIONS
   ===================================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.animate-fade-in {
  animation: fadeIn 0.3s ease;
}

.animate-slide-up {
  animation: slideUp 0.4s ease;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* =====================================================
   SCROLLBAR
   ===================================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

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

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 991px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .btn-lg {
    padding: 0.875rem 1.5rem;
  }
}