/* ===== MODERN RANDEVU PRO DESIGN ===== */
/* Advanced CSS Variables for Dynamic Theming */
:root {
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  
  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border Radius Scale */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Animations */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark Theme */
:root[data-theme='dark'] {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-quaternary: #374151;
  
  --surface-primary: #1f2937;
  --surface-secondary: #374151;
  --surface-tertiary: #4b5563;
  --surface-glass: rgba(31, 41, 55, 0.7);
  
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-quaternary: #6b7280;
  
  --border-primary: #374151;
  --border-secondary: #4b5563;
  --border-tertiary: #6b7280;
  
  --accent-primary: #3b82f6;
  --accent-secondary: #1d4ed8;
  --accent-tertiary: #1e40af;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --info: #06b6d4;
  --info-bg: rgba(6, 182, 212, 0.1);
  
  --glass-bg: rgba(31, 41, 55, 0.8);
  --glass-border: rgba(156, 163, 175, 0.2);
  --backdrop-blur: blur(12px);
  
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-aurora: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
}

/* Light Theme */
:root[data-theme='light'] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-quaternary: #e2e8f0;
  
  --surface-primary: #ffffff;
  --surface-secondary: #f8fafc;
  --surface-tertiary: #f1f5f9;
  --surface-glass: rgba(255, 255, 255, 0.7);
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-tertiary: #64748b;
  --text-quaternary: #94a3b8;
  
  --border-primary: #e2e8f0;
  --border-secondary: #cbd5e1;
  --border-tertiary: #94a3b8;
  
  --accent-primary: #3b82f6;
  --accent-secondary: #1d4ed8;
  --accent-tertiary: #1e40af;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent-glow: 0 0 20px rgba(59, 130, 246, 0.2);
  
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --info: #06b6d4;
  --info-bg: rgba(6, 182, 212, 0.1);
  
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(148, 163, 184, 0.2);
  --backdrop-blur: blur(12px);
  
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-aurora: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
}

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

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

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;

}

@keyframes gradientShift {
  0%, 100% { filter: hue-rotate(0deg); }
  50% { filter: hue-rotate(180deg); }
}

/* Selection */
::selection {
  background: var(--accent-primary);
  color: white;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-secondary);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

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

/* ===== NAVBAR ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-md) 0;
  transition: all var(--transition-normal);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.brand-section {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: var(--shadow-lg);
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from { box-shadow: var(--shadow-lg); }
  to { box-shadow: var(--shadow-lg), var(--accent-glow); }
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.brand-text span {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 400;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  transition: left var(--transition-normal);
  z-index: -1;
}

.nav-link:hover::before {
  left: 0;
}

.nav-link:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.nav-link.logout-btn {
  background: var(--error-bg);
  color: var(--error);
}

.nav-link.logout-btn:hover {
  background: var(--error);
  color: white;
}

/* Active nav state */
.nav-link.active {
  background: var(--gradient-primary);
  color: #fff !important;
  font-weight: 600;
  box-shadow: var(--shadow-md), var(--accent-glow);
}

.nav-link.active::before { display:none; }

.theme-toggle {
  padding: var(--space-sm);
  background: var(--surface-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.25rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background: var(--surface-tertiary);
  transform: scale(1.1) rotate(180deg);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* ===== MAIN LAYOUT ===== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-xl);
  min-height: calc(100vh - 100px);
}

/* ===== MODERN LOADER ===== */
.loader {
  position: fixed;
  inset: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--transition-normal);
}

.loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.spinner-dots {
  display: flex;
  gap: var(--space-sm);
}

.dot {
  width: 12px;
  height: 12px;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  animation: bounce 1.4s ease-in-out infinite both;
}

.dot:nth-child(1) { animation-delay: -0.32s; }
.dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

.loading-text {
  color: var(--text-secondary);
  font-weight: 500;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ===== CARDS & PANELS ===== */
.panel {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
}

.panel:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

.panel-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.panel-sm { max-width: 420px; margin: 0 auto; }
.panel-md { max-width: 600px; }
.panel-lg { max-width: 800px; }

/* ===== MODERN TABS ===== */
.tabs {
  display: flex;
  gap: var(--space-xs);
  background: var(--surface-secondary);
  padding: var(--space-xs);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
}

.tab {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-tertiary);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.tab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.tab.active::before,
.tab:hover::before {
  opacity: 1;
}

.tab.active,
.tab:hover {
  color: white;
  font-weight: 600;
}

.tab-panel {
  display: none;
  animation: slideUp 0.4s var(--spring);
}

.tab-panel.active {
  display: block;
}

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

/* ===== FORMS ===== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-row {
  display: flex;
  gap: var(--space-md);
  align-items: end;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

input, select, textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  position: relative;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: var(--surface-primary);
}

input::placeholder {
  color: var(--text-quaternary);
}

/* Custom Select Styling */
select {
  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='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--surface-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  min-height: 44px;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.btn:hover::before {
  opacity: 1;
}

.btn:hover {
  color: white;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn.primary {
  background: var(--gradient-primary);
  border: none;
  color: white;
  font-weight: 600;
}

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

.btn.danger {
  background: var(--error);
  border: none;
  color: white;
}

.btn.danger:hover {
  background: #dc2626;
  box-shadow: var(--shadow-lg), 0 0 20px rgba(239, 68, 68, 0.3);
}

/* Softer danger style for small icon buttons */
.btn.danger-soft {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(239,68,68,0.35);
  box-shadow: none;
}
.btn.danger-soft:hover {
  background: var(--error);
  color: #fff;
  border-color: var(--error);
  box-shadow: var(--shadow-md), 0 0 12px rgba(239,68,68,0.4);
  transform: translateY(-2px);
}

/* Icon button refinement */
.btn.mini.icon-btn { padding: .45rem; min-width: 34px; }
.btn .icon { width:16px; height:16px; display:block; }
.btn .icon svg { width:100%; height:100%; display:block; fill:currentColor; }

.btn.success {
  background: var(--success);
  border: none;
  color: white;
}

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

.btn.full {
  width: 100%;
}

.btn.mini {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.75rem;
  min-height: 32px;
}

.btn.large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1rem;
  min-height: 56px;
}

/* ===== TABLES ===== */
.table-container {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.table-scroll {
  overflow: auto;
  max-height: 60vh;
}

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.875rem;
}

.table thead {
  background: var(--surface-tertiary);
  position: sticky;
  top: 0;
  z-index: 10;
}

.table th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-primary);
}

.table td {
  padding: var(--space-md) var(--space-lg);
  color: var(--text-secondary);
  border-bottom: none; /* çizgi tr üzerinden yönetilecek */
}

/* Çok satırlı doğum tarihi hücresi hizalama */
.table td .birth-extra{display:block;margin-top:2px;font-size:0.65rem;opacity:.6;line-height:1.05;}
.table td:nth-child(3){vertical-align:middle;}
.table tbody tr td:nth-child(3){white-space:nowrap;}
/* Doğum tarihi sütunu ortalama */
.table th:nth-child(3), .table td:nth-child(3){text-align:center;}
.table td:nth-child(3) .birth-extra{text-align:center;}
@media (max-width:900px){
  .table tbody tr td:nth-child(3){white-space:normal;}
}

.table tbody tr {transition: all var(--transition-fast); border-bottom:1px solid var(--border-primary);}
.table tbody tr:hover {background: var(--surface-secondary);}
.table tbody tr:last-child {border-bottom:none;}

/* Liste sayacı alt konum */
.list-status.below-table{margin-top: 10px;font-size:.7rem;opacity: 1;padding: 0;} 

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

.badge.success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge.warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge.error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge.info {
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.badge.neutral {
  background: var(--surface-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-secondary);
}

/* Badge Status Mapping */
.badge.ok {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge.warn {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

/* ===== TOGGLE SWITCH ===== */
.toggle {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  cursor: pointer;
  user-select: none;
}

.toggle-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-track {
  width: 48px;
  height: 24px;
  background: var(--surface-tertiary);
  border: 2px solid var(--border-secondary);
  border-radius: var(--radius-full);
  position: relative;
  transition: all var(--transition-normal);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal) var(--spring);
  box-shadow: var(--shadow-md);
}

.toggle-input:checked + .toggle-track {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle-input:checked + .toggle-track .toggle-thumb {
  transform: translateX(24px);
}

.toggle:hover .toggle-track {
  border-color: var(--accent-primary);
}

.toggle-label {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
}

/* ===== SEARCH & FILTERS ===== */
.search-input, .filter-select {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.875rem;
  min-width: 200px;
  margin-bottom: 10px;
}
.search-container { display:flex; align-items:center; gap:.6rem; flex-wrap:wrap; }
.list-status { margin-top: var(--space-sm); display:flex; justify-content:space-between; align-items:center; min-height:24px; }
.search-count { font-size:.65rem; font-weight:600; letter-spacing:.5px; padding:.25rem .55rem; background:var(--surface-secondary); border:1px solid var(--border-secondary); border-radius: var(--radius-full); color:var(--text-tertiary); text-transform:uppercase; }

/* Pagination */
.pagination { margin-top: var(--space-md); display:flex; justify-content:space-between; flex-wrap:wrap; }
.pag-inner { display:flex; gap: var(--space-md); align-items:center; flex-wrap:wrap; width:100%; }
.pag-info { font-size:.75rem; color: var(--text-tertiary); font-weight:500; }
.pag-buttons { display:flex; gap:.25rem; }
.pag-btn { background: var(--surface-secondary); border:1px solid var(--border-secondary); padding:.4rem .65rem; border-radius: var(--radius-md); cursor:pointer; font-size:.7rem; min-width:34px; display:inline-flex; align-items:center; justify-content:center; font-weight:600; color: var(--text-secondary); transition: all var(--transition-fast); }
.pag-btn:hover { background: var(--surface-tertiary); }
.pag-btn.active { background: var(--gradient-primary); border-color: transparent; color:#fff; box-shadow: var(--accent-glow); }
.pag-btn.first,.pag-btn.last,.pag-btn.prev,.pag-btn.next { font-weight:700; }

.search-input::placeholder {
  color: var(--text-quaternary);
}

/* ===== MODAL ===== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

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

.modal {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  max-width: 500px;
  width: 100%;
  box-shadow: var(--shadow-2xl);
  animation: modalSlide 0.4s var(--spring);
}

@keyframes modalSlide {
  from {
    opacity: 0;
    transform: translateY(50px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.modal-head h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

/* ===== LAYOUT UTILITIES ===== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap { gap: var(--space-lg); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-auto { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

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

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

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

/* ===== LOGIN PAGE ===== */
.center-box {
  max-width: 400px;
  margin: 6rem auto;
  padding: var(--space-2xl);
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  animation: slideUp 0.6s var(--spring);
}

.center-box h1 {
  text-align: center;
  margin-bottom: var(--space-xl);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 2rem;
  font-weight: 700;
}

/* ===== ERROR STYLES ===== */
.error {
  color: var(--error);
  font-size: 0.875rem;
  margin-top: var(--space-sm);
  padding: var(--space-sm);
  background: var(--error-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--error);
}

/* ===== ACTIONS ===== */
.actions-row {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

.actions {
  display: flex;
  gap: var(--space-xs);
  align-items: center;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .container {
    padding: var(--space-lg);
  }
  
  .nav-container {
    padding: 0 var(--space-lg);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .container {
    padding: var(--space-md);
  }
  
  .panel {
    padding: var(--space-lg);
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    flex-direction: column;
  }
  
  .tabs {
    flex-direction: column;
    gap: var(--space-xs);
  }
  
  .tab {
    justify-content: center;
  }
  
  .table-scroll {
    max-height: 50vh;
  }
  
  .center-box {
    margin: 2rem auto;
    padding: var(--space-xl);
  }
  
  .modal {
    margin: var(--space-md);
    padding: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 var(--space-md);
  }
  
  .brand-text h1 {
    font-size: 1rem;
  }
  
  .brand-text span {
    display: none;
  }
  
  .container {
    padding: var(--space-sm);
  }
  
  .panel {
    padding: var(--space-md);
  }
  
  .actions {
    flex-direction: column;
    width: 100%;
  }
  
  .actions .btn {
    width: 100%;
  }
}

/* ===== SPECIAL EFFECTS ===== */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.floating {
  animation: float 3s ease-in-out infinite;
}

/* ===== CUSTOMER PAGE ENHANCEMENTS ===== */
.customer-stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(130px,1fr));
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}
.customer-stats-bar .stat-item {
  background: var(--surface-secondary);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  position: relative;
  overflow: hidden;
  font-size: .75rem;
}
.customer-stats-bar .stat-item.highlight { background: var(--gradient-secondary); color:#fff; }
.customer-stats-bar .stat-item .label { text-transform: uppercase; letter-spacing: .5px; opacity:.7; font-weight:600; }
.customer-stats-bar .stat-item .value { font-size:1.3rem; font-weight:700; }

.view-toggle { display:inline-flex; background:var(--surface-secondary); border:1px solid var(--border-secondary); border-radius: var(--radius-full); overflow:hidden; margin-left: var(--space-sm); }
.view-toggle button { background:none; border:none; padding:.5rem .75rem; cursor:pointer; font-size:1rem; color:var(--text-tertiary); transition:background var(--transition-fast), color var(--transition-fast); }
.view-toggle button.active, .view-toggle button:hover { background: var(--gradient-primary); color:#fff; }

.cards-grid { display:grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: var(--space-md); margin-top: var(--space-lg); }
.customer-card { position:relative; background: var(--surface-secondary); border:1px solid var(--border-secondary); border-radius: var(--radius-xl); padding: var(--space-lg); display:flex; flex-direction:column; gap: var(--space-sm); box-shadow: var(--shadow-md); transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
.customer-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
.customer-avatar { width:54px; height:54px; border-radius: var(--radius-full); background: var(--gradient-primary); display:flex; align-items:center; justify-content:center; font-size:1.4rem; color:#fff; box-shadow: var(--accent-glow); }
.customer-name { font-weight:600; font-size:1rem; display:flex; align-items:center; gap:.4rem; }
.customer-meta { font-size:.7rem; text-transform:uppercase; letter-spacing:.5px; color: var(--text-tertiary); }
.customer-actions { display:flex; gap:.4rem; margin-top:auto; }
.customer-bday-badge { position:absolute; top:8px; right:8px; font-size:.75rem; background: var(--warning); color:#000; padding:2px 6px; border-radius: var(--radius-full); font-weight:600; }

.upcoming-birthdays { margin-top: var(--space-xl); padding: var(--space-lg); background: var(--surface-secondary); border:1px solid var(--border-secondary); border-radius: var(--radius-xl); display:flex; flex-direction:column; gap: var(--space-md); }
.upcoming-birthdays h4 { margin:0; font-size:1rem; display:flex; gap:.5rem; align-items:center; }
.upcoming-birthdays ul { list-style:none; margin:0; padding:0; display:grid; gap:.5rem; }
.upcoming-birthdays li { font-size:.8rem; display:flex; justify-content:space-between; gap:1rem; padding:.5rem .75rem; background: var(--surface-tertiary); border:1px solid var(--border-primary); border-radius: var(--radius-lg); }
.upcoming-birthdays li .days { font-weight:600; color: var(--accent-primary); }

@media (max-width: 600px){
  .customer-stats-bar { grid-template-columns: repeat(2,1fr); }
  .cards-grid { grid-template-columns: repeat(auto-fill,minmax(160px,1fr)); }
}

/* List left / form right layout */
.customers-layout { display:grid; grid-template-columns: 2fr 1fr; gap: var(--space-xl); align-items: start; }
.customers-layout .customer-list-panel { order:1; }
.customers-layout .customer-form-panel { order:2; position:sticky; top:calc(70px + var(--space-md)); align-self:start; }
@media (max-width: 1100px){
  .customers-layout { grid-template-columns: 1fr; }
  .customers-layout .customer-form-panel { position:static; order:1; }
  .customers-layout .customer-list-panel { order:2; }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus indicators */
.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* ===== DARK/LIGHT THEME TRANSITIONS ===== */
* {
  transition: 
    background-color var(--transition-slow),
    border-color var(--transition-slow),
    color var(--transition-slow),
    fill var(--transition-slow),
    stroke var(--transition-slow);
}