/*
 * Profesyonel Apartman Yönetim Sistemi
 * Modern & Responsive Design System
 * Version: 2.0
 */

:root {
  /* Primary Colors */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;
  --primary-900: #0c4a6e;

  /* Success Colors */
  --success-50: #f0fdf4;
  --success-100: #dcfce7;
  --success-200: #bbf7d0;
  --success-300: #86efac;
  --success-400: #4ade80;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  --success-800: #166534;
  --success-900: #14532d;

  /* Warning Colors */
  --warning-50: #fffbeb;
  --warning-100: #fef3c7;
  --warning-200: #fde68a;
  --warning-300: #fcd34d;
  --warning-400: #fbbf24;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --warning-700: #b45309;
  --warning-800: #92400e;
  --warning-900: #78350f;

  /* Danger Colors */
  --danger-50: #fef2f2;
  --danger-100: #fee2e2;
  --danger-200: #fecaca;
  --danger-300: #fca5a5;
  --danger-400: #f87171;
  --danger-500: #ef4444;
  --danger-600: #dc2626;
  --danger-700: #b91c1c;
  --danger-800: #991b1b;
  --danger-900: #7f1d1d;

  /* Neutral Colors */
  --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;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --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);

  /* Borders */
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-2xl: 1.25rem;

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--gray-50);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 0.5em;
  color: var(--gray-900);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  color: var(--gray-600);
}

/* Layout Components */
.main-wrapper {
  min-height: 100vh;
  display: flex;
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--gray-50) 100%);
}

/* Sidebar Navigation */
.sidebar {
  width: 280px;
  min-height: 100vh;
  background: var(--gray-900);
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;
  border-right: 1px solid var(--gray-200);
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-normal);
}

.sidebar-brand {
  padding: 2rem 1.5rem;
  border-bottom: 1px solid var(--gray-700);
  text-align: center;
}

.sidebar-brand h4 {
  color: white;
  font-weight: 700;
  margin: 0;
  font-size: 1.25rem;
}

.sidebar-brand p {
  color: var(--gray-400);
  font-size: 0.875rem;
  margin: 0.5rem 0 0 0;
}

.sidebar-nav {
  padding: 1.5rem 0;
}

.nav-section {
  margin-bottom: 2rem;
}

.nav-section-title {
  padding: 0 1.5rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  border-bottom: 1px solid var(--gray-700);
  margin-bottom: 1rem;
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.875rem 1.5rem;
  color: var(--gray-300);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  position: relative;
}

.nav-link:hover {
  color: white;
  background-color: var(--gray-800);
  border-left-color: var(--primary-500);
  transform: translateX(2px);
}

.nav-link.active {
  color: white;
  background: linear-gradient(90deg, var(--primary-600), var(--primary-500));
  border-left-color: var(--primary-400);
  box-shadow: var(--shadow-md);
}

.nav-link i {
  width: 20px;
  height: 20px;
  margin-right: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-badge {
  background: var(--danger-500);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 100px;
  margin-left: auto;
  min-width: 20px;
  text-align: center;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: 280px;
  min-height: 100vh;
  background: var(--gray-50);
  transition: all var(--transition-normal);
}

/* Header */
.page-header {
  background: white;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: between;
  align-items: center;
}

.page-title {
  margin: 0;
  color: var(--gray-900);
  font-size: 1.5rem;
  font-weight: 700;
}

.page-subtitle {
  color: var(--gray-500);
  font-size: 0.875rem;
  margin: 0.25rem 0 0 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: var(--gray-50);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--gray-200);
}

.user-avatar {
  width: 32px;
  height: 32px;
  background: var(--primary-500);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--gray-900);
  margin: 0;
}

.user-role {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin: 0;
}

/* Content Area */
.content-wrapper {
  padding: 2rem;
}

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

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.card-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--gray-100);
  background: white;
}

.card-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-subtitle {
  margin: 0.5rem 0 0 0;
  font-size: 0.875rem;
  color: var(--gray-500);
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem 1.5rem;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-100);
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: white;
  border-radius: var(--border-radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
}

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

.stat-content {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.stat-info {
  flex: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin: 0;
  font-weight: 500;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0.25rem 0 0 0;
  line-height: 1;
}

.stat-change {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

.stat-change.positive {
  color: var(--success-600);
}

.stat-change.negative {
  color: var(--danger-600);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  color: white;
  border-color: var(--primary-500);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-success {
  background: linear-gradient(135deg, var(--success-500), var(--success-600));
  color: white;
  border-color: var(--success-500);
  box-shadow: var(--shadow-sm);
}

.btn-success:hover {
  background: linear-gradient(135deg, var(--success-600), var(--success-700));
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning-500), var(--warning-600));
  color: white;
  border-color: var(--warning-500);
  box-shadow: var(--shadow-sm);
}

.btn-warning:hover {
  background: linear-gradient(135deg, var(--warning-600), var(--warning-700));
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-500), var(--danger-600));
  color: white;
  border-color: var(--danger-500);
  box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
  background: linear-gradient(135deg, var(--danger-600), var(--danger-700));
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary-600);
  border-color: var(--primary-300);
}

.btn-outline-primary:hover {
  background: var(--primary-500);
  color: white;
  border-color: var(--primary-500);
}

/* Form Elements */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--border-radius-md);
  background: white;
  color: var(--gray-900);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
  transform: translateY(-1px);
}

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

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.75rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

/* Tables */
.table-container {
  background: white;
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

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

.table thead th {
  background: var(--gray-50);
  padding: 1rem 1.5rem;
  font-weight: 600;
  color: var(--gray-700);
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.table tbody td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-600);
}

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

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

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-success {
  background: var(--success-100);
  color: var(--success-700);
}

.badge-warning {
  background: var(--warning-100);
  color: var(--warning-700);
}

.badge-danger {
  background: var(--danger-100);
  color: var(--danger-700);
}

.badge-primary {
  background: var(--primary-100);
  color: var(--primary-700);
}

/* Alerts */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--border-radius-lg);
  border: 1px solid;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.alert-success {
  background: var(--success-50);
  color: var(--success-800);
  border-color: var(--success-200);
}

.alert-warning {
  background: var(--warning-50);
  color: var(--warning-800);
  border-color: var(--warning-200);
}

.alert-danger {
  background: var(--danger-50);
  color: var(--danger-800);
  border-color: var(--danger-200);
}

.alert-info {
  background: var(--primary-50);
  color: var(--primary-800);
  border-color: var(--primary-200);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(17, 24, 39, 0.5);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-content {
  background: white;
  border-radius: var(--border-radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.95);
  transition: all var(--transition-normal);
}

.modal-overlay.show .modal-content {
  transform: scale(1);
}

.modal-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--gray-200);
}

.modal-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
}

.modal-body {
  padding: 1.5rem;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 1rem 1.5rem 1.5rem;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

/* Progress */
.progress {
  height: 8px;
  background: var(--gray-200);
  border-radius: 100px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
  border-radius: 100px;
  transition: width var(--transition-normal);
}

/* Loading States */
.loading-spinner {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-300);
  border-top-color: var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .content-wrapper {
    padding: 1rem;
  }

  .page-header {
    padding: 1rem;
  }

  .card-body {
    padding: 1rem;
  }

  .table-container {
    overflow-x: auto;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Custom Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.fade-in-up {
  animation: fadeInUp 0.5s ease-out;
}

.slide-in-left {
  animation: slideInLeft 0.5s ease-out;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --gray-50: #0f172a;
    --gray-100: #1e293b;
    --gray-200: #334155;
    --gray-800: #f1f5f9;
    --gray-900: #f8fafc;
  }
}

/* Print Styles */
@media print {
  .sidebar,
  .header-actions,
  .btn,
  .modal-overlay {
    display: none !important;
  }

  .main-content {
    margin-left: 0;
  }

  .card {
    box-shadow: none;
    border: 1px solid var(--gray-300);
  }
}