/**
 * Modern shadcn/ui Tasarım Sistemi (CSS)
 * Temiz, hafif, hızlı ve mobil öncelikli arayüz stilleri
 */

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

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --primary: #0f172a;
  --primary-hover: #1e293b;
  --primary-fg: #ffffff;
  
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 70px; /* Mobilde alt navigasyon payı */
}

@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Desktop Sidebar */
.app-sidebar {
  display: none;
  width: 260px;
  background: #ffffff;
  border-right: 1px solid var(--border-color);
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
}

@media (min-width: 1024px) {
  .app-sidebar {
    display: flex;
  }
  .app-main {
    margin-left: 260px;
  }
}

.sidebar-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-nav {
  padding: 1rem 0.75rem;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all 0.15s ease;
}

.nav-item:hover {
  background-color: #f1f5f9;
  color: var(--text-main);
}

.nav-item.active {
  background-color: #0f172a;
  color: #ffffff;
}

.nav-item.active i {
  color: #ffffff;
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Ana İçerik Alanı */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Topbar */
.app-topbar {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

@media (min-width: 1024px) {
  .app-topbar {
    padding: 1rem 2rem;
  }
}

.page-body {
  padding: 1rem;
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .page-body {
    padding: 1.5rem 2rem;
  }
}

/* Mobil Alt Navigasyon (Bottom Navigation Bar) */
.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0.25rem;
  z-index: 50;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.03);
}

@media (min-width: 1024px) {
  .mobile-bottom-nav {
    display: none;
  }
}

.mobile-nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  flex: 1;
  text-align: center;
}

.mobile-nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

/* Kartlar ve Konteynerler */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 0.5rem;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

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

.btn-secondary {
  background-color: #f1f5f9;
  color: #334155;
  border-color: #e2e8f0;
}
.btn-secondary:hover {
  background-color: #e2e8f0;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover {
  background-color: #f8fafc;
}

.btn-danger {
  background-color: #ef4444;
  color: #ffffff;
}
.btn-danger:hover {
  background-color: #dc2626;
}

.btn-success {
  background-color: #10b981;
  color: #ffffff;
}
.btn-success:hover {
  background-color: #059669;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.775rem;
  border-radius: var(--radius-sm);
}

.btn-icon {
  padding: 0.55rem;
  border-radius: var(--radius-md);
}

/* Form Elemanları */
.form-group {
  margin-bottom: 1.1rem;
}

.form-label {
  display: block;
  font-size: 0.825rem;
  font-weight: 500;
  color: #334155;
  margin-bottom: 0.4rem;
}

.form-control, .form-select, .form-textarea {
  width: 100%;
  padding: 0.6rem 0.85rem;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text-main);
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: #0f172a;
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* Badgeler (Durum Etiketleri) */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid transparent;
}

.badge-success {
  background-color: #ecfdf5;
  color: #065f46;
  border-color: #a7f3d0;
}

.badge-danger {
  background-color: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}

.badge-warning {
  background-color: #fffbeb;
  color: #92400e;
  border-color: #fde68a;
}

.badge-info {
  background-color: #eff6ff;
  color: #1e40af;
  border-color: #bfdbfe;
}

.badge-secondary {
  background-color: #f1f5f9;
  color: #475569;
  border-color: #e2e8f0;
}

/* Tablolar */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: #ffffff;
}

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

.table th {
  background-color: #f8fafc;
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: #475569;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}

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

.table tr:hover td {
  background-color: #f8fafc;
}

/* Modallar */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

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

.modal-dialog {
  background: #ffffff;
  border-radius: var(--radius-xl);
  max-width: 540px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  transform: translateY(12px) scale(0.98);
  transition: all 0.2s ease;
}

.modal-backdrop.active .modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background-color: #f8fafc;
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

/* Sekmeler (Tabs) */
.tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  overflow-x: auto;
  padding-bottom: 1px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 0.65rem 1rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem auto;
  background-color: #f1f5f9;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
}

.empty-state-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.empty-state-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 360px;
  margin: 0 auto 1.5rem auto;
}

/* Grid Yardımcıları */
.grid {
  display: grid;
  gap: 1.25rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 768px) {
  .md-grid-cols-1 { grid-template-columns: 1fr !important; }
}

/* Flex Yardımcıları */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }

/* Margin / Padding */
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }

/* Tipografi */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }

/* Progress Bar */
.progress-bar-bg {
  width: 100%;
  height: 8px;
  background-color: #e2e8f0;
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: #0f172a;
  border-radius: 9999px;
  transition: width 0.3s ease;
}

/* Floating Action Button (Mobilde hızlı ekleme butonu) */
.fab {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  bottom: 80px;
  right: 1.25rem;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.3);
  z-index: 45;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.fab:hover {
  transform: scale(1.05);
}

@media (min-width: 1024px) {
  .fab {
    display: none;
  }
}