/**
 * Common CSS - Event Web Application
 * Mobile-first responsive design
 */

/* ============================================
   CSS Variables / Design Tokens
   ============================================ */
:root {
  /* Colors - TheGOGO Theme */
  --primary: #c60033;
  --primary-dark: #a0002a;
  --primary-light: #e6335c;
  --secondary: #333333;
  --success: #26B99A;
  --warning: #FF8000;
  --danger: #dc2626;
  --info: #009cba;

  /* Grays */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);

  /* Typography */
  --font-family: 'Prompt', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

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

  /* Z-index layers */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-toast: 600;
}

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

/* Ensure font-family is inherited by form elements */
input,
button,
select,
textarea,
optgroup {
  font-family: var(--font-family);
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--gray-800);
  background-color: var(--gray-50);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Hide Vue templates before mounting */
[v-cloak] {
  display: none !important;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--gray-900);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

p {
  margin-bottom: var(--space-md);
}

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

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

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  padding-top: 70px; /* Header height */
  padding-bottom: var(--space-xl);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
}

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

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

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

.btn-secondary {
  background-color: var(--gray-200);
  color: var(--gray-700);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--gray-300);
}

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

.btn-success:hover:not(:disabled) {
  background-color: #1e9b82;
}

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

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

.btn-lg {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn-block {
  width: 100%;
}

/* ============================================
   Form Elements
   ============================================ */
.form-group {
  margin-bottom: var(--space-md);
}

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

.form-control {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--gray-800);
  background-color: white;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 130, 247, 0.2);
}

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

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-sm) center;
  padding-right: var(--space-xl);
}

/* ============================================
   Cards
   ============================================ */
.card {
  background-color: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-body {
  padding: var(--space-md);
}

.card-header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--gray-200);
}

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

/* ============================================
   Badges
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: 1;
  border-radius: var(--radius-sm);
}

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

.badge-success {
  background-color: rgba(38, 185, 154, 0.15);
  color: var(--success);
}

.badge-warning {
  background-color: rgba(255, 128, 0, 0.15);
  color: var(--warning);
}

.badge-danger {
  background-color: rgba(220, 38, 38, 0.15);
  color: var(--danger);
}

.badge-info {
  background-color: rgba(0, 156, 186, 0.15);
  color: var(--info);
}

/* ============================================
   Loading & Spinner
   ============================================ */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-md);
  z-index: var(--z-modal);
}

.loading-text {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

/* ============================================
   Modal
   ============================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

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

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  background-color: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-modal);
  width: calc(100% - var(--space-xl));
  max-width: 500px;
  max-height: calc(100vh - var(--space-xl));
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

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

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

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-500);
  border-radius: var(--radius);
  transition: background-color var(--transition-fast);
}

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

.modal-body {
  padding: var(--space-md);
}

.modal-footer {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-top: 1px solid var(--gray-200);
  justify-content: flex-end;
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
  position: fixed;
  top: 70px;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  pointer-events: none;
}

.toast {
  background-color: var(--gray-800);
  color: white;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  animation: slideDown 0.3s ease;
  pointer-events: auto;
}

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

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

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

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--gray-500); }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.font-normal { font-weight: 400; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-xs); }
.p-2 { padding: var(--space-sm); }
.p-3 { padding: var(--space-md); }
.p-4 { padding: var(--space-lg); }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }
.d-inline-flex { display: inline-flex; }

.flex-column { flex-direction: column; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: var(--space-xs); }
.gap-2 { gap: var(--space-sm); }
.gap-3 { gap: var(--space-md); }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }

/* ============================================
   Responsive Utilities
   ============================================ */
@media (min-width: 768px) {
  .d-md-none { display: none; }
  .d-md-block { display: block; }
  .d-md-flex { display: flex; }
}

@media (min-width: 1024px) {
  .d-lg-none { display: none; }
  .d-lg-block { display: block; }
  .d-lg-flex { display: flex; }
}

/* ============================================
   iOS Safe Area Support
   ============================================ */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .main-content {
    padding-bottom: calc(var(--space-xl) + env(safe-area-inset-bottom));
  }
}

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

/* Hide scrollbar for category tabs */
.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}