/* ==========================================================================
   CarX Utility Web Dashboard - Minimalist Dark Mode Stylesheet
   Designed for fast performance, clean readability, and 100% mobile readiness.
   ========================================================================== */

:root {
  --bg-main: #0b0d13;
  --bg-card: #131620;
  --bg-input: #1a1e2c;
  --bg-hover: #222738;
  --border-color: #252a3a;
  --border-focus: #3b82f6;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-glow: rgba(37, 99, 235, 0.2);

  --secondary: #272d3f;
  --secondary-hover: #333a52;

  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;

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

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: all 0.2s ease-in-out;
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* App Header */
.app-header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.header-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #ffffff;
}

.brand-badge {
  font-size: 10px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* Subtle Admin Button in Top Right */
.btn-subtle {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-dim);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-subtle:hover {
  color: var(--text-main);
  background-color: var(--bg-input);
  border-color: var(--border-color);
}

.btn-subtle.is-admin {
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.3);
  background-color: rgba(16, 185, 129, 0.08);
}

.icon-lock {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
}

/* Nav Tabs (Mobile Friendly Scroller) */
.nav-container {
  background-color: var(--bg-main);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 49px;
  z-index: 90;
}

.nav-scroller {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 0 12px;
}

.nav-scroller::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  padding: 12px 14px;
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

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

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

.badge-lock {
  font-size: 9px;
  background-color: var(--bg-input);
  color: var(--text-dim);
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

.nav-tab.admin-unlocked .badge-lock {
  background-color: rgba(16, 185, 129, 0.2);
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.4);
}

/* Main Content Area */
.main-content {
  max-width: 900px;
  width: 100%;
  margin: 16px auto;
  padding: 0 16px;
  flex: 1;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Card Container */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.card-header {
  margin-bottom: 18px;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-muted);
}

/* 3-Steps Guide Box */
.steps-box {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.step-desc strong {
  display: block;
  font-size: 13px;
  color: var(--text-main);
  margin-bottom: 2px;
}

.step-desc p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

.step-desc em {
  color: var(--warning);
  font-style: normal;
  font-weight: 600;
}

/* Form & Inputs */
.form-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 600px) {
  .form-row-2 {
    grid-template-columns: 1fr;
  }
}

.credentials-bar {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 18px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="file"],
select.select-field {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 14px;
  padding: 10px 12px;
  outline: none;
  transition: var(--transition);
}

input:focus,
select.select-field:focus {
  border-color: var(--border-focus);
  background-color: #1e2333;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 12px;
  border-radius: var(--radius-sm);
}

.checkbox-group input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--primary);
}

.checkbox-group label {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
  cursor: pointer;
}

.checkbox-group strong {
  color: var(--text-main);
}

/* Buttons */
.btn {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-block {
  width: 100%;
}

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

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

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

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

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

/* Filter Bar & Search Box */
.filter-bar {
  display: flex;
  overflow-x: auto;
  gap: 6px;
  padding-bottom: 8px;
  margin-bottom: 12px;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 20px;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

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

.filter-btn.active {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.search-box {
  margin-bottom: 16px;
}

/* Cars Grid */
.cars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

@media (max-width: 500px) {
  .cars-grid {
    grid-template-columns: 1fr;
  }
}

.car-card {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  transition: var(--transition);
}

.car-card:hover {
  border-color: var(--text-dim);
}

.car-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.car-name {
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
}

.car-badge {
  font-size: 10px;
  font-weight: 600;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.car-details {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-dim);
}

/* Custom Car Injector Box */
.custom-car-box {
  background-color: var(--bg-input);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
}

.custom-car-header {
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.custom-car-header strong {
  font-size: 13px;
  color: var(--text-main);
}

.custom-car-inputs {
  display: flex;
  gap: 8px;
}

@media (max-width: 500px) {
  .custom-car-inputs {
    flex-direction: column;
  }
}

/* Resources Grid */
.resources-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 650px) {
  .resources-grid {
    grid-template-columns: 1fr;
  }
}

.res-card {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
}

.res-info h3 {
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 2px;
}

.res-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.res-action {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Backup Grid */
.backup-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 650px) {
  .backup-grid {
    grid-template-columns: 1fr;
  }
}

.backup-box {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}

.backup-box h3 {
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 4px;
}

.backup-box p {
  font-size: 12px;
  margin-bottom: 14px;
}

/* Admin Gate & Panel */
.admin-header-badge {
  margin-bottom: 8px;
}

.badge-tag {
  font-size: 10px;
  font-weight: 700;
  background-color: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.4);
  color: #60a5fa;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.admin-gate-box {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.admin-gate-box p {
  color: var(--text-muted);
  font-size: 13px;
}

/* Result Box */
.result-box {
  margin-top: 16px;
  padding: 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 1.5;
}

.result-box.success {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.result-box.error {
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.cred-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin: 10px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: monospace;
  font-size: 12px;
  color: #ffffff;
}

.cred-row {
  display: flex;
  justify-content: space-between;
}

.cred-label {
  color: var(--text-dim);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 360px;
  padding: 20px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-header h3 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  z-index: 300;
  transition: var(--transition);
}

.toast.toast-success {
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.toast.toast-error {
  border-color: rgba(239, 68, 68, 0.4);
  color: #f87171;
}

/* Footer */
.app-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding: 14px 16px;
  text-align: center;
  font-size: 11px;
  color: var(--text-dim);
}

/* Utility Helpers */
.hidden {
  display: none !important;
}

.text-muted {
  color: var(--text-muted);
}