/* ========================================
   IkutEvent - Global Design System
   ======================================== */

/* --- CSS Variables --- */
:root {
  /* Primary palette */
  --color-primary: #4F46E5;
  --color-primary-light: #6366F1;
  --color-primary-dark: #4338CA;
  --color-primary-50: #EEF2FF;
  --color-primary-100: #E0E7FF;
  --color-primary-200: #C7D2FE;

  /* Secondary palette */
  --color-secondary: #10B981;
  --color-secondary-light: #34D399;
  --color-secondary-dark: #059669;
  --color-secondary-50: #ECFDF5;

  /* Neutrals */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;

  /* Semantic */
  --color-danger: #EF4444;
  --color-danger-light: #FCA5A5;
  --color-danger-dark: #DC2626;
  --color-warning: #F59E0B;
  --color-warning-light: #FCD34D;
  --color-info: #3B82F6;
  --color-info-light: #93C5FD;
  --color-success: #10B981;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;

  /* Borders */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-index layers */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal-backdrop: 300;
  --z-modal: 400;
  --z-toast: 500;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  outline: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* --- Loading screen --- */
.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  gap: var(--spacing-4);
  color: var(--color-gray-500);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Utility classes --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.container-sm { max-width: 640px; }
.container-md { max-width: 768px; }
.container-lg { max-width: 1024px; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-4xl { font-size: var(--font-size-4xl); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-gray { color: var(--color-gray-500); }
.text-primary { color: var(--color-primary); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }

.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.p-2 { padding: var(--spacing-2); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

.w-full { width: 100%; }
.h-full { height: 100%; }
.hidden { display: none; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: 0.625rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.25;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-dark);
  box-shadow: var(--shadow-md);
}

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

.btn-danger:hover:not(:disabled) {
  background-color: var(--color-danger-dark);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-gray-600);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-gray-100);
  color: var(--color-gray-800);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: var(--font-size-base);
}

.btn-block {
  width: 100%;
}

/* --- Forms --- */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-1);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-base);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-200);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-input.error {
  border-color: var(--color-danger);
}

.form-input.error:focus {
  box-shadow: 0 0 0 3px var(--color-danger-light);
}

.form-error {
  margin-top: var(--spacing-1);
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

.form-hint {
  margin-top: var(--spacing-1);
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
}

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

.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-primary);
}

/* --- Cards --- */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--color-gray-200);
}

.card-body {
  padding: var(--spacing-6);
}

.card-footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

/* --- Tables --- */
.table-container {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-200);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table thead {
  background-color: var(--color-gray-50);
}

.table th {
  padding: var(--spacing-3) var(--spacing-4);
  text-align: left;
  font-weight: 600;
  color: var(--color-gray-600);
  white-space: nowrap;
  border-bottom: 2px solid var(--color-gray-200);
}

.table td {
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom: 1px solid var(--color-gray-100);
  color: var(--color-gray-700);
}

.table tbody tr:hover {
  background-color: var(--color-gray-50);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: 0.125rem 0.625rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-dark);
}

.badge-success {
  background-color: var(--color-secondary-50);
  color: var(--color-secondary-dark);
}

.badge-danger {
  background-color: #FEE2E2;
  color: var(--color-danger-dark);
}

.badge-warning {
  background-color: #FEF3C7;
  color: #92400E;
}

.badge-info {
  background-color: #DBEAFE;
  color: #1E40AF;
}

.badge-gray {
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
}

/* --- Modals --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal-backdrop);
  padding: var(--spacing-4);
  animation: fadeIn 0.2s ease;
}

.modal {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  z-index: var(--z-modal);
  animation: slideUp 0.25s ease;
}

.modal-lg { max-width: 700px; }
.modal-xl { max-width: 900px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--color-gray-200);
}

.modal-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: none;
  color: var(--color-gray-400);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
}

.modal-body {
  padding: var(--spacing-6);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-3);
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-gray-200);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Page layout --- */
.page-header {
  margin-bottom: var(--spacing-6);
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-gray-900);
}

.page-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-gray-500);
  margin-top: var(--spacing-1);
}

/* --- Empty state --- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-16) var(--spacing-4);
  text-align: center;
  color: var(--color-gray-400);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-4);
}

.empty-state h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-2);
}

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-1);
  margin-top: var(--spacing-6);
}

.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  background: none;
  color: var(--color-gray-600);
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background-color: var(--color-gray-100);
}

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

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .grid-cols-3,
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }

  .container { padding: 0 var(--spacing-3); }

  .modal { margin: var(--spacing-4); }

  .table { font-size: var(--font-size-xs); }
  .table th,
  .table td { padding: var(--spacing-2) var(--spacing-3); }

  .hide-mobile { display: none; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 { grid-template-columns: 1fr; }

  .btn { padding: 0.5rem 1rem; }
  .btn-lg { padding: 0.75rem 1.25rem; }

  .page-title { font-size: var(--font-size-xl); }
}


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