:root {
  /* Sarı & Mor Kurumsal Renk Paleti */
  --purple-main: #7c3aed;
  --purple-hover: #6d28d9;
  --purple-dark: #5b21b6;
  --purple-light: #f5f3ff;
  --purple-border: #ddd6fe;
  --purple-glow: rgba(124, 58, 237, 0.18);

  --yellow-main: #f59e0b;
  --yellow-hover: #d97706;
  --yellow-light: #fffbeb;
  --yellow-border: #fde68a;
  --yellow-glow: rgba(245, 158, 11, 0.22);

  --primary: var(--purple-main);
  --primary-hover: var(--purple-hover);
  --accent: var(--yellow-main);

  /* Beyaz / Açık Tema Arka Planları */
  --bg-main: #f8fafc;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #faf5ff;
  --bg-subtle: #f1f5f9;

  /* Tipografi & Kontrast */
  --text-main: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --border-light: #f1f5f9;

  /* Durum Renkleri */
  --success: #10b981;
  --success-bg: #ecfdf5;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --info: #3b82f6;
  --info-bg: #eff6ff;

  --radius-xl: 20px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 14px rgba(124, 58, 237, 0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 28px rgba(124, 58, 237, 0.12), 0 4px 10px rgba(0,0,0,0.06);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: hidden;
  height: 100vh;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* Dashboard Shell */
.app-shell {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  position: relative;
}

/* Sidebar (Beyaz & Mor Vurgulu) */
.sidebar {
  width: 275px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 100;
  transition: transform 0.25s ease-in-out;
  box-shadow: var(--shadow-sm);
}

.sidebar-brand {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
  background: #ffffff;
}
.sidebar-brand img {
  height: 48px;
  max-width: 100%;
  object-fit: contain;
}

.station-chip {
  padding: 12px 18px;
  background: var(--purple-light);
  border-bottom: 1px solid var(--purple-border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.station-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.nav-category {
  font-size: 11px;
  font-weight: 800;
  color: var(--purple-dark);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 12px 10px 4px;
  opacity: 0.8;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  transition: all 0.15s ease-in-out;
  cursor: pointer;
  border: 1px solid transparent;
}

.nav-item:hover {
  background: var(--purple-light);
  color: var(--purple-main);
}

.nav-item.active {
  background: linear-gradient(135deg, var(--purple-main) 0%, var(--purple-dark) 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--purple-glow);
}

.nav-item.active .nav-icon {
  transform: scale(1.1);
}

.nav-item .nav-icon {
  font-size: 17px;
  width: 22px;
  text-align: center;
  transition: transform 0.2s;
}

.nav-badge {
  margin-left: auto;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 800;
  background: var(--yellow-main);
  color: #000000;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
  background: #ffffff;
}

/* Mobile Sidebar Backdrop */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 90;
}

/* Main Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-main);
}

/* Top Appbar */
.appbar {
  height: 68px;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-main);
  cursor: pointer;
  margin-right: 12px;
}

.appbar-title h1 {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.3px;
}
.appbar-title p {
  font-size: 12px;
  color: var(--text-muted);
}

.appbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Butonlar (Mor & Sarı Temalı) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple-main) 0%, var(--purple-dark) 100%);
  color: #ffffff;
  box-shadow: 0 3px 12px var(--purple-glow);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--purple-hover) 0%, var(--purple-dark) 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px var(--purple-glow);
}

.btn-accent {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  color: #000000;
  font-weight: 800;
  box-shadow: 0 3px 12px var(--yellow-glow);
}
.btn-accent:hover {
  background: #d97706;
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-secondary);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background: var(--purple-light);
  color: var(--purple-main);
  border-color: var(--purple-border);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: #fecaca;
}
.btn-danger:hover {
  background: var(--danger);
  color: #ffffff;
}

.btn-sm { padding: 6px 12px; font-size: 12px; border-radius: var(--radius-sm); }

/* Content Area */
.content-body {
  flex: 1;
  overflow-y: auto;
  position: relative;
  background: var(--bg-main);
}

.page-view {
  display: none;
  padding: 24px 28px 60px;
  max-width: 1600px;
  margin: 0 auto;
}
.page-view.active {
  display: block;
}

/* Dashboard Pano Grid (Beyaz Kartlar + Mor/Sarı Vurgular) */
.stat-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--purple-main), var(--yellow-main));
}

.stat-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.stat-card-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.stat-card-icon {
  font-size: 18px;
  padding: 8px;
  background: var(--purple-light);
  border-radius: var(--radius-sm);
  color: var(--purple-main);
}

.stat-card-value {
  font-size: 30px;
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: -1px;
}
.stat-card-meta {
  font-size: 12px;
  color: var(--purple-main);
  margin-top: 6px;
  font-weight: 600;
}

/* 2-Column Dashboard Rows */
.dashboard-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.panel-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.panel-card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #ffffff;
}
.panel-card-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--text-main);
}

/* Data Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.modern-table, .data-table {
  width: 100% !important;
  min-width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.modern-table th, .data-table th {
  padding: 12px 16px;
  background: #f8fafc;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.modern-table td, .data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
  background: #ffffff;
}
.modern-table tr:hover td, .data-table tr:hover td {
  background: var(--purple-light);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 700;
}
.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid #a7f3d0; }
.badge-warning { background: var(--yellow-light); color: var(--yellow-hover); border: 1px solid var(--yellow-border); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid #fecaca; }
.badge-info { background: var(--purple-light); color: var(--purple-main); border: 1px solid var(--purple-border); }

/* Interactive Queue Cards */
.queue-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
}
.queue-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}
.queue-item.first-in-line {
  border: 2px solid var(--yellow-main);
  background: linear-gradient(90deg, #fffbeb 0%, #ffffff 100%);
  box-shadow: 0 4px 16px var(--yellow-glow);
}
.queue-number {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #f8fafc;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  color: var(--purple-main);
}
.queue-item.first-in-line .queue-number {
  border-color: var(--yellow-main);
  color: #000000;
  background: var(--yellow-main);
}

/* Chat Styling */
.chat-container {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 170px);
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: #f8fafc;
}
.chat-bubble {
  max-width: 70%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 13.5px;
  line-height: 1.4;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.chat-bubble.operator {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--purple-main) 0%, var(--purple-dark) 100%);
  color: #ffffff;
  border-bottom-right-radius: 4px;
}
.chat-bubble.driver {
  align-self: flex-start;
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text-main);
  border-bottom-left-radius: 4px;
}
.chat-sender {
  font-size: 11px;
  font-weight: 800;
  margin-bottom: 4px;
  opacity: 0.85;
}
.chat-time {
  font-size: 10px;
  margin-top: 4px;
  text-align: right;
  opacity: 0.7;
}

.chat-input-bar {
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  background: #ffffff;
  display: flex;
  gap: 10px;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
  padding: 16px;
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-window {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  padding: 24px;
  box-shadow: var(--shadow-lg);
  max-height: 90vh;
  overflow-y: auto;
}

.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 11.5px;
  font-weight: 800;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}
.form-input {
  width: 100%;
  padding: 10px 14px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus {
  border-color: var(--purple-main);
  box-shadow: 0 0 0 3px var(--purple-glow);
}

/* ==========================================================================
   📱 MOBİL & TABLET DUYARLILIK (RESPONSIVE)
   ========================================================================== */

@media (max-width: 1024px) {
  .dashboard-row {
    grid-template-columns: 1fr;
  }
  .appbar {
    padding: 0 16px;
  }
  .page-view {
    padding: 18px 16px 40px;
  }
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: inline-flex;
  }

  .sidebar {
    position: fixed;
    top: 0; bottom: 0; left: 0;
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  .sidebar-backdrop.mobile-open {
    display: block;
  }

  .appbar-title p {
    display: none;
  }
  .appbar-title h1 {
    font-size: 16px;
  }

  .appbar-actions {
    gap: 6px;
  }
  .appbar-actions .btn {
    padding: 7px 10px;
    font-size: 11px;
  }
  .appbar-actions .btn-secondary {
    display: none; /* Mobilde ikincil butonları gizle veya basitleştir */
  }

  .stat-cards-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .stat-card {
    padding: 14px;
  }
  .stat-card-value {
    font-size: 22px;
  }

  .queue-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .queue-item > div:last-child {
    width: 100%;
    display: flex;
    justify-content: space-between;
  }

  .chat-container {
    height: calc(100vh - 140px);
  }
  .chat-bubble {
    max-width: 85%;
  }

  #tab-araclar > div {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  .stat-cards-grid {
    grid-template-columns: 1fr;
  }
}