:root {
  --bg-app: hsl(222 47% 9%);
  --bg-card: hsl(217 33% 14%);
  --bg-card-hover: hsl(217 33% 17%);
  --bg-input: hsl(217 33% 10%);
  --border-color: hsl(217 32% 22%);
  --border-focus: hsl(210 100% 50%);
  
  --text-main: hsl(210 40% 98%);
  --text-muted: hsl(215 20% 65%);
  --text-dim: hsl(215 20% 45%);
  
  --color-primary: hsl(210 100% 50%);
  --color-primary-hover: hsl(210 100% 42%);
  --color-success: hsl(142 70% 45%);
  --color-warning: hsl(38 92% 50%);
  --color-danger: hsl(0 84% 60%);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-layout {
  max-width: 1440px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1.5rem;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-badge {
  background-color: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.nav-brand h1 {
  font-size: 1.3rem;
  font-weight: 800;
}

.nav-brand h1 span {
  color: var(--color-primary);
}

.header-vehicle-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-input);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.header-vehicle-selector select {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-weight: 700;
  outline: none;
  font-size: 0.875rem;
}

.nav-tabs {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.nav-tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.825rem;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.nav-tab:hover {
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.nav-tab.active {
  background-color: var(--color-primary);
  color: #fff;
}

/* Ana Container */
.main-container {
  padding: 1.5rem;
  flex: 1;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.2s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.pane-header {
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.pane-header h2 {
  font-size: 1.4rem;
  font-weight: 800;
}

.pane-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Dashboard Başlık ve Hızlı KM */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.dashboard-header h2 {
  font-size: 1.35rem;
  font-weight: 800;
}

.dashboard-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.quick-km-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-input);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.quick-km-wrap label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.quick-km-wrap input {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-weight: 700;
  width: 90px;
  outline: none;
  font-size: 0.95rem;
}

/* KPI Kartları */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.kpi-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.kpi-icon {
  font-size: 2rem;
}

.kpi-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
}

.kpi-val {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 2px;
}

.kpi-val small {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* Hızlı İşlem Çubuğu */
.quick-actions-bar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

/* İki Kolonlu Kart Düzeni */
.dash-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .dash-two-col {
    grid-template-columns: 1fr;
  }
}

.dash-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.dash-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.list-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.list-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

/* Garaj Araç Kartları */
.vehicle-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}

.vehicle-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.plate-badge-lg {
  background: #f8fafc;
  color: #0f172a;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.1rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  display: inline-block;
  border-left: 6px solid #0284c7;
}

/* Bakım Düzeni */
.maintenance-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .maintenance-layout {
    grid-template-columns: 1fr;
  }
}

.maint-col {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.maint-col h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
}

.maint-item-card {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  margin-bottom: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.progress-track {
  height: 6px;
  background-color: rgba(255,255,255,0.08);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
}

/* TCO Banner */
.cost-summary-banner {
  background: linear-gradient(135deg, hsl(217 33% 16%), hsl(222 47% 12%));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.cost-summary-banner .label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.cost-summary-banner h2 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-top: 4px;
}

.tco-badges {
  display: flex;
  gap: 10px;
}

.badge-box {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.badge-box span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.badge-box strong {
  font-size: 1.1rem;
  color: var(--color-primary);
}

.category-bars-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.cat-bar-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cat-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
}

.cat-bar-bg {
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
}

.cat-bar-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 4px;
}

/* Raporlama Layout */
.reports-container-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .reports-container-layout {
    grid-template-columns: 1fr;
  }
}

.report-form-card, .my-reports-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.report-iframe {
  width: 100%;
  height: 600px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: #fff;
}

/* Butonlar & Formlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

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

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

.btn-danger { background-color: var(--color-danger); color: #fff; }
.btn-danger:hover { background-color: #dc2626; }

.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.75rem; }
.btn-block { width: 100%; display: flex; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.75rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input, .form-group select, .textarea-codes {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 0.55rem 0.8rem;
  font-size: 0.85rem;
  outline: none;
}

.form-group input:focus, .form-group select:focus, .textarea-codes:focus {
  border-color: var(--border-focus);
}

.textarea-codes {
  width: 100%;
  height: 80px;
  font-family: var(--font-mono);
  resize: vertical;
}

/* Tablolar */
.table-responsive {
  max-height: 380px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  text-align: left;
}

.table th, .table td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  background-color: var(--bg-input);
  font-weight: 600;
  color: var(--text-muted);
  position: sticky;
  top: 0;
}

.table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Rozetler */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.badge-safe { background: rgba(16, 185, 129, 0.15); color: var(--color-success); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--color-warning); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--color-danger); }
.badge-code { background: var(--bg-input); font-family: var(--font-mono); color: #fff; }

.alert-banner {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  font-size: 0.85rem;
  line-height: 1.45;
}

.alert-danger {
  background-color: rgba(239, 68, 68, 0.12);
  border: 1px solid var(--color-danger);
  color: #fca5a5;
}

.maps-finder-box {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.maps-categories-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

/* Modallar */
.custom-dialog {
  margin: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-card);
  color: var(--text-main);
  max-width: 600px;
  width: calc(100% - 2rem);
  max-height: 90vh;
  outline: none;
}

.custom-dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
}

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

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.dialog-body {
  padding: 1.25rem;
  overflow-y: auto;
  max-height: calc(90vh - 65px);
}

.hidden { display: none !important; }