/**
 * Cerberus System M - グラレコ風スタイルシート
 * Graphic Recording Style CSS
 */

/* ===================================
   CSS Variables
   =================================== */
:root {
  /* メインカラー */
  --ui-color-1: #1B6C8C;  /* 青緑 - メイン */
  --ui-color-2: #BF8136;  /* オレンジ - アクセント */
  --ui-color-3: #F2E8E4;  /* クリーム - 背景 */
  --ui-color-4: #260101;  /* ダーク - テキスト */
  --ui-color-5: #BF5656;  /* 赤 - 警告・エラー */
  --background: #FFF8F5;  /* 全体背景 */
  
  /* 追加カラー */
  --success-color: #4CAF50;
  --info-color: #2196F3;
  --shadow-color: rgba(38, 1, 1, 0.1);
  --border-color: #E8DDD9;
  
  /* フォント */
  --font-main: 'Kaisei Decol', serif;
  --font-handwritten: 'Yomogi', cursive;
  --font-accent: 'Zen Kurenaido', sans-serif;
  
  /* サイズ */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
}

/* ===================================
   Base Styles
   =================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--background);
  color: var(--ui-color-4);
  line-height: 1.6;
  min-height: 100vh;
}

/* 紙のような背景テクスチャ */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(191, 129, 54, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(27, 108, 140, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

a {
  color: var(--ui-color-1);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--ui-color-2);
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-accent);
  color: var(--ui-color-4);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

.handwritten {
  font-family: var(--font-handwritten);
}

/* ===================================
   Layout
   =================================== */
.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 250px;
  background: linear-gradient(180deg, var(--ui-color-1) 0%, #155a73 100%);
  color: white;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  box-shadow: 4px 0 15px var(--shadow-color);
}

.main-content {
  flex: 1;
  margin-left: 250px;
  padding: var(--spacing-lg);
  min-height: 100vh;
}

/* ===================================
   Sidebar
   =================================== */
.sidebar-header {
  padding: var(--spacing-lg);
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.sidebar-title {
  font-family: var(--font-accent);
  font-size: 1.2rem;
  letter-spacing: 1px;
}

.sidebar-nav {
  padding: var(--spacing-md) 0;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  color: rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
  border-left: 4px solid transparent;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border-left-color: var(--ui-color-2);
}

.nav-item.active {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border-left-color: var(--ui-color-2);
}

.nav-item i {
  width: 24px;
  margin-right: var(--spacing-md);
  text-align: center;
}

.nav-badge {
  margin-left: auto;
  background: var(--ui-color-2);
  color: white;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 10px;
}

/* ===================================
   Header
   =================================== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 10px var(--shadow-color);
  margin-bottom: var(--spacing-lg);
}

.header-title {
  font-family: var(--font-accent);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header-title i {
  color: var(--ui-color-1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* 言語切り替え */
.lang-switcher {
  display: flex;
  gap: var(--spacing-xs);
}

.lang-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: white;
  cursor: pointer;
  transition: all 0.3s ease;
}

.lang-btn:hover {
  border-color: var(--ui-color-1);
}

.lang-btn.active {
  background: var(--ui-color-1);
  color: white;
  border-color: var(--ui-color-1);
}

/* ユーザーメニュー */
.user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--ui-color-3);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.user-avatar {
  width: 36px;
  height: 36px;
  background: var(--ui-color-1);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

/* ===================================
   Cards - グラレコ風
   =================================== */
.card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 15px var(--shadow-color);
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-color);
}

/* カードの装飾 - 手書き風の線 */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ui-color-1), var(--ui-color-2));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card-title {
  font-family: var(--font-accent);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.card-title i {
  color: var(--ui-color-1);
}

/* ===================================
   Stats Cards - ダッシュボード用
   =================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 1200px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--shadow-color);
}

.stat-card.primary::before { background: var(--ui-color-1); }
.stat-card.success::before { background: var(--success-color); }
.stat-card.danger::before { background: var(--ui-color-5); }
.stat-card.warning::before { background: var(--ui-color-2); }

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
}

.stat-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

.stat-card.primary .stat-icon { color: var(--ui-color-1); }
.stat-card.success .stat-icon { color: var(--success-color); }
.stat-card.danger .stat-icon { color: var(--ui-color-5); }
.stat-card.warning .stat-icon { color: var(--ui-color-2); }

.stat-label {
  font-family: var(--font-accent);
  font-size: 1rem;
  color: var(--ui-color-4);
  opacity: 0.8;
  margin-bottom: var(--spacing-xs);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: var(--spacing-sm);
}

.stat-card.primary .stat-value { color: var(--ui-color-1); }
.stat-card.success .stat-value { color: var(--success-color); }
.stat-card.danger .stat-value { color: var(--ui-color-5); }
.stat-card.warning .stat-value { color: var(--ui-color-2); }

/* 吹き出し - 手書き風 */
.stat-bubble {
  font-family: var(--font-handwritten);
  background: var(--ui-color-3);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  position: relative;
  margin-top: var(--spacing-sm);
  display: inline-block;
}

.stat-bubble::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid var(--ui-color-3);
}

.stat-bubble.positive {
  color: var(--success-color);
}

.stat-bubble.negative {
  color: var(--ui-color-5);
}

/* ===================================
   Tables
   =================================== */
.table-container {
  overflow-x: auto;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 15px var(--shadow-color);
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background: var(--ui-color-3);
}

th {
  font-family: var(--font-accent);
  text-align: left;
  padding: var(--spacing-md);
  font-weight: 500;
  border-bottom: 2px solid var(--border-color);
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

tr:hover {
  background: rgba(27, 108, 140, 0.03);
}

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

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.btn-primary {
  background: var(--ui-color-1);
  color: white;
}

.btn-primary:hover {
  background: #155a73;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(27, 108, 140, 0.3);
}

.btn-secondary {
  background: var(--ui-color-3);
  color: var(--ui-color-4);
}

.btn-secondary:hover {
  background: #e8ddd9;
}

.btn-accent {
  background: var(--ui-color-2);
  color: white;
}

.btn-accent:hover {
  background: #a56d2a;
}

.btn-danger {
  background: var(--ui-color-5);
  color: white;
}

.btn-danger:hover {
  background: #a54848;
}

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

.btn-success:hover {
  background: #3d9142;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--ui-color-1);
  color: var(--ui-color-1);
}

.btn-outline:hover {
  background: var(--ui-color-1);
  color: white;
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.8rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1rem;
}

.btn-icon {
  padding: var(--spacing-sm);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.form-label {
  display: block;
  font-family: var(--font-accent);
  margin-bottom: var(--spacing-sm);
  color: var(--ui-color-4);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--ui-color-1);
  box-shadow: 0 0 0 3px rgba(27, 108, 140, 0.1);
}

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

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

.form-checkbox input {
  width: 20px;
  height: 20px;
  accent-color: var(--ui-color-1);
}

/* ===================================
   Badges
   =================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
}

.badge-primary {
  background: rgba(27, 108, 140, 0.1);
  color: var(--ui-color-1);
}

.badge-success {
  background: rgba(76, 175, 80, 0.1);
  color: var(--success-color);
}

.badge-warning {
  background: rgba(191, 129, 54, 0.1);
  color: var(--ui-color-2);
}

.badge-danger {
  background: rgba(191, 86, 86, 0.1);
  color: var(--ui-color-5);
}

.badge-info {
  background: rgba(33, 150, 243, 0.1);
  color: var(--info-color);
}

/* ===================================
   Alerts
   =================================== */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.alert-icon {
  font-size: 1.2rem;
}

.alert-success {
  background: rgba(76, 175, 80, 0.1);
  border-left: 4px solid var(--success-color);
}

.alert-success .alert-icon { color: var(--success-color); }

.alert-warning {
  background: rgba(191, 129, 54, 0.1);
  border-left: 4px solid var(--ui-color-2);
}

.alert-warning .alert-icon { color: var(--ui-color-2); }

.alert-danger {
  background: rgba(191, 86, 86, 0.1);
  border-left: 4px solid var(--ui-color-5);
}

.alert-danger .alert-icon { color: var(--ui-color-5); }

.alert-info {
  background: rgba(33, 150, 243, 0.1);
  border-left: 4px solid var(--info-color);
}

.alert-info .alert-icon { color: var(--info-color); }

/* ===================================
   Modal
   =================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(38, 1, 1, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: white;
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 10px 40px rgba(38, 1, 1, 0.2);
  transform: translateY(-20px);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

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

.modal-title {
  font-family: var(--font-accent);
  font-size: 1.2rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--ui-color-4);
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.modal-close:hover {
  opacity: 1;
}

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

.modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
}

/* ===================================
   Pagination
   =================================== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
}

.pagination-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: white;
  cursor: pointer;
  transition: all 0.3s ease;
}

.pagination-btn:hover {
  border-color: var(--ui-color-1);
  color: var(--ui-color-1);
}

.pagination-btn.active {
  background: var(--ui-color-1);
  color: white;
  border-color: var(--ui-color-1);
}

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

/* ===================================
   Charts Container
   =================================== */
.chart-container {
  position: relative;
  height: 300px;
  padding: var(--spacing-md);
}

/* ===================================
   Login Page
   =================================== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--ui-color-1) 0%, #155a73 100%);
}

.login-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 400px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.login-logo {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.login-logo-icon {
  font-size: 4rem;
  color: var(--ui-color-1);
  margin-bottom: var(--spacing-sm);
}

.login-logo-text {
  font-family: var(--font-accent);
  font-size: 1.5rem;
  color: var(--ui-color-4);
}

.login-form .form-group {
  margin-bottom: var(--spacing-lg);
}

.login-btn {
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1rem;
}

/* ===================================
   Responsive Sidebar
   =================================== */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: var(--spacing-md);
  left: var(--spacing-md);
  z-index: 101;
  background: var(--ui-color-1);
  color: white;
  border: none;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .sidebar-toggle {
    display: block;
  }
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.animate-slide-in {
  animation: slideIn 0.5s ease forwards;
}

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

/* Staggered animation for cards */
.stat-card:nth-child(1) { animation-delay: 0.1s; }
.stat-card:nth-child(2) { animation-delay: 0.2s; }
.stat-card:nth-child(3) { animation-delay: 0.3s; }
.stat-card:nth-child(4) { animation-delay: 0.4s; }

/* ===================================
   Tooltips
   =================================== */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--ui-color-4);
  color: white;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
  bottom: calc(100% + 5px);
}

/* ===================================
   Loading Spinner
   =================================== */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top-color: var(--ui-color-1);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 248, 245, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  z-index: 9999;
}

/* ===================================
   Empty State
   =================================== */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--ui-color-4);
  opacity: 0.7;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state-text {
  font-family: var(--font-handwritten);
  font-size: 1.2rem;
}

/* ===================================
   Action Bar
   =================================== */
.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--ui-color-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.search-box {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: border-color 0.3s ease;
}

.search-box:focus-within {
  border-color: var(--ui-color-1);
}

.search-box input {
  border: none;
  outline: none;
  font-family: var(--font-main);
}

.search-box i {
  color: var(--ui-color-4);
  opacity: 0.5;
}

/* ===================================
   Toast Notifications
   =================================== */
.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  background: white;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 15px var(--shadow-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 300px;
  animation: slideIn 0.3s ease;
}

.toast-success { border-left: 4px solid var(--success-color); }
.toast-error { border-left: 4px solid var(--ui-color-5); }
.toast-warning { border-left: 4px solid var(--ui-color-2); }
.toast-info { border-left: 4px solid var(--info-color); }

.toast-icon {
  font-size: 1.2rem;
}

.toast-success .toast-icon { color: var(--success-color); }
.toast-error .toast-icon { color: var(--ui-color-5); }
.toast-warning .toast-icon { color: var(--ui-color-2); }
.toast-info .toast-icon { color: var(--info-color); }

.toast-close {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.5;
}

.toast-close:hover {
  opacity: 1;
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

/* ===================================
   Modal Backdrop (alternate naming)
   =================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(38, 1, 1, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-backdrop:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.modal:not(.hidden) {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  z-index: 1000;
  background: white;
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 10px 40px rgba(38, 1, 1, 0.2);
  opacity: 0;
  transition: all 0.3s ease;
}

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

/* ===================================
   Utility Classes
   =================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--ui-color-1); }
.text-accent { color: var(--ui-color-2); }
.text-danger { color: var(--ui-color-5); }
.text-success { color: var(--success-color); }
.text-muted { opacity: 0.7; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

.w-full { width: 100%; }
.hidden { display: none !important; }

/* Input error state */
.input-error {
  border-color: var(--ui-color-5) !important;
  box-shadow: 0 0 0 3px rgba(191, 86, 86, 0.1);
}