/* ============================================
   DOCTORCLIK - MODERN DESIGN SYSTEM
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ============================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================ */

:root {
  /* Color Palette - Medical Theme */
  --color-primary: #2563EB;        /* Blue 600 - Trust & Professionalism */
  --color-primary-dark: #1E40AF;   /* Blue 800 */
  --color-primary-light: #3B82F6;  /* Blue 500 */
  --color-primary-lighter: #DBEAFE; /* Blue 100 */
  
  --color-secondary: #10B981;      /* Emerald 500 - Health & Wellness */
  --color-secondary-dark: #059669; /* Emerald 600 */
  --color-secondary-light: #34D399; /* Emerald 400 */
  --color-secondary-lighter: #D1FAE5; /* Emerald 100 */
  
  --color-accent: #38BDF8;         /* Sky 400 - Light Blue */
  --color-accent-dark: #0EA5E9;    /* Sky 500 */
  --color-accent-light: #7DD3FC;   /* Sky 300 */
  --color-accent-lighter: #E0F2FE; /* Sky 100 */
  
  /* Neutrals - Slate Palette */
  --color-gray-50: #F8FAFC;
  --color-gray-100: #F1F5F9;
  --color-gray-200: #E2E8F0;
  --color-gray-300: #CBD5E1;
  --color-gray-400: #94A3B8;
  --color-gray-500: #64748B;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1E293B;
  --color-gray-900: #0F172A;
  
  /* Semantic Colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-danger: #EF4444;
  --color-info: #3B82F6;
  
  /* Background Colors */
  --bg-body: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-hover: #F1F5F9;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Spacing Scale */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4rem;     /* 64px */
  
  /* Border Radius */
  --radius-sm: 0.375rem;  /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --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 -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ============================================
   BASE STYLES
   ============================================ */

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--color-gray-800);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: 70px;
}

/* ============================================
   MODERN NAVBAR
   ============================================ */

.navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  transition: all var(--transition-base);
}

.navbar-brand {
  font-weight: var(--font-weight-bold);
  font-size: 1.25rem;
  color: var(--color-primary) !important;
  transition: color var(--transition-fast);
}

.navbar-brand:hover {
  color: var(--color-primary-dark) !important;
}

.nav-link {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700) !important;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary) !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-base);
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 80%;
}

/* ============================================
   GRADIENT BACKGROUNDS
   ============================================ */

.gradient-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.gradient-secondary {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
}

.gradient-hero {
  background: linear-gradient(135deg, #2563EB 0%, #10B981 50%, #8B5CF6 100%);
}

.gradient-hero-alt {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.95) 0%, rgba(16, 185, 129, 0.9) 100%);
}

/* ============================================
   MODERN CARDS
   ============================================ */

.card {
  background: var(--bg-card);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.card-modern {
  background: var(--bg-card);
  border: none;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.card-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   STAT CARDS
   ============================================ */

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.stat-card-primary .stat-card-icon {
  background: var(--color-primary-lighter);
  color: var(--color-primary);
}

.stat-card-secondary .stat-card-icon {
  background: var(--color-secondary-lighter);
  color: var(--color-secondary);
}

.stat-card-accent .stat-card-icon {
  background: var(--color-accent-lighter);
  color: var(--color-accent);
}

/* ============================================
   MODERN BUTTONS
   ============================================ */

.btn {
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  padding: 0.625rem 1.25rem;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: white;
}

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

.btn-secondary:hover {
  background: var(--color-secondary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: white;
}

.btn-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: white;
  border: none;
}

.btn-gradient:hover {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-accent-dark) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

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

.btn-outline-primary:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-1px);
}

/* ============================================
   MODERN BADGES
   ============================================ */

.badge {
  font-weight: var(--font-weight-medium);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
}

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

.badge-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

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

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

.badge-danger {
  background: #FEE2E2;
  color: #991B1B;
}

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

/* ============================================
   MODERN FORMS
   ============================================ */

.form-control, .form-select {
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 0.625rem 1rem;
  transition: all var(--transition-base);
  font-family: var(--font-sans);
}

.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lighter);
  outline: none;
}

.form-label {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--space-sm);
}

.form-modern {
  background: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

/* ============================================
   MODERN TABLES
   ============================================ */

.table-modern {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

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

.table-modern thead th {
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 1rem;
  border-bottom: 2px solid var(--color-gray-200);
}

.table-modern tbody tr {
  transition: background-color var(--transition-fast);
}

.table-modern tbody tr:hover {
  background: var(--bg-hover);
}

.table-modern tbody td {
  padding: 1rem;
  border-bottom: 1px solid var(--color-gray-100);
}

/* ============================================
   FEATURE CARDS
   ============================================ */

.feature-card {
  background: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  text-align: center;
  border: 2px solid var(--color-gray-100);
  transition: all var(--transition-base);
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-xl);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  background: var(--color-primary-lighter);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

/* ============================================
   DOCTOR CARDS
   ============================================ */

.doctor-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-base);
  height: 100%;
}

.doctor-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-light);
}

.doctor-avatar {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 3px solid var(--color-gray-100);
}

.doctor-avatar-placeholder {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: 1.5rem;
}

/* ============================================
   APPOINTMENT CARDS
   ============================================ */

.appointment-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border-left: 4px solid var(--color-gray-300);
  margin-bottom: var(--space-md);
  transition: all var(--transition-base);
}

.appointment-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.appointment-card.status-pending {
  border-left-color: var(--color-warning);
}

.appointment-card.status-accepted {
  border-left-color: var(--color-success);
}

.appointment-card.status-completed {
  border-left-color: var(--color-info);
}

.appointment-card.status-rejected,
.appointment-card.status-canceled {
  border-left-color: var(--color-danger);
}

/* ============================================
   MODERN MODALS
   ============================================ */

.modal-content {
  border: none;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
}

.modal-header {
  background: var(--color-gray-50);
  border-bottom: 2px solid var(--color-gray-200);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-lg);
}

.modal-title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-800);
}

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

.modal-footer {
  background: var(--color-gray-50);
  border-top: 2px solid var(--color-gray-200);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  padding: var(--space-lg);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
  border-radius: var(--radius-lg);
  border: none;
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: start;
  gap: var(--space-md);
}

.alert-success {
  background: var(--color-secondary-lighter);
  color: var(--color-secondary-dark);
}

.alert-danger {
  background: #FEE2E2;
  color: #991B1B;
}

.alert-info {
  background: var(--color-primary-lighter);
  color: var(--color-primary-dark);
}

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

/* ============================================
   TABS
   ============================================ */

.nav-tabs {
  border-bottom: 2px solid var(--color-gray-200);
}

.nav-tabs .nav-link {
  border: none;
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
  padding: var(--space-md) var(--space-lg);
  transition: all var(--transition-base);
  position: relative;
}

.nav-tabs .nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.nav-tabs .nav-link:hover {
  color: var(--color-primary);
  background: transparent;
}

.nav-tabs .nav-link.active {
  color: var(--color-primary);
  background: transparent;
  border: none;
}

.nav-tabs .nav-link.active::after {
  transform: scaleX(1);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

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

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

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

.animate-slide-in {
  animation: slideInRight 0.5s ease-out;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.bg-primary { background-color: var(--color-primary) !important; }
.bg-secondary { background-color: var(--color-secondary) !important; }
.bg-accent { background-color: var(--color-accent) !important; }

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

.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }

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

@media (max-width: 768px) {
  body {
    padding-top: 60px;
  }
  
  .card-modern,
  .feature-card,
  .doctor-card {
    margin-bottom: var(--space-lg);
  }
  
  .stat-card {
    margin-bottom: var(--space-md);
  }
  
  .table-modern {
    font-size: 0.875rem;
  }
  
  .modal-body {
    padding: var(--space-lg);
  }
}

/* ============================================
   HERO SECTION STYLES
   ============================================ */

.hero-section {
  background: linear-gradient(135deg, #2563EB 0%, #10B981 50%, #8B5CF6 100%);
  min-height: 60vh;
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.4;
}

.hero-content {
  position: relative;
  z-index: 1;
}

/* ============================================
   SEARCH BAR
   ============================================ */

.search-bar-modern {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  transition: all var(--transition-base);
}

.search-bar-modern:focus-within {
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), var(--shadow-2xl);
}

.search-bar-modern .form-control,
.search-bar-modern .form-select {
  border: none;
  box-shadow: none;
}

.search-bar-modern .form-control:focus,
.search-bar-modern .form-select:focus {
  box-shadow: none;
  border: none;
}

/* ============================================
   LOADING STATES
   ============================================ */

.skeleton {
  background: linear-gradient(90deg, var(--color-gray-200) 25%, var(--color-gray-100) 50%, var(--color-gray-200) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .navbar,
  .btn,
  .modal,
  .alert {
    display: none !important;
  }
  
  body {
    padding-top: 0;
    background: white;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}