:root {
  --bg: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-card: #1e2130;
  --bg-card-hover: #252840;
  --border: #2a2d3a;
  --text: #e8e9ed;
  --text-secondary: #8b8fa3;
  --text-muted: #5c6078;
  --primary: #4f8cff;
  --primary-hover: #3d7aee;
  --primary-bg: rgba(79, 140, 255, 0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --sidebar-width: 280px;
  --header-height: 56px;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow: hidden;
  height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  outline: none;
  transition: all 0.15s;
}

input, select {
  font-family: inherit;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}
input:focus, select:focus { border-color: var(--primary); }

.app-layout {
  display: flex;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 10;
}

.sidebar-brand {
  padding: 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-brand-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: white;
}

.sidebar-brand h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
}

.sidebar-section {
  margin-bottom: 20px;
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  padding: 8px 12px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: var(--bg-card);
  color: var(--text);
}

.nav-item.active {
  background: var(--primary-bg);
  color: var(--primary);
}

.nav-item svg, .nav-item i {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

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

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius);
  cursor: pointer;
}

.sidebar-user:hover {
  background: var(--bg-card);
}

.sidebar-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 13px;
  color: white;
  flex-shrink: 0;
}

.sidebar-user-info {
  flex: 1;
  min-width: 0;
}

.sidebar-user-name {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-email {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Main content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.page-header {
  height: var(--header-height);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.page-title {
  font-size: 16px;
  font-weight: 600;
  flex: 1;
}

.page-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* Login */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: var(--bg);
}

.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
}

.login-brand {
  text-align: center;
  margin-bottom: 32px;
}

.login-brand-icon {
  width: 56px;
  height: 56px;
  background: var(--primary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: white;
  margin: 0 auto 16px;
}

.login-brand h1 {
  font-size: 24px;
  font-weight: 700;
}

.login-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--primary);
  color: white;
  width: 100%;
}

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

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--bg-card-hover); }

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover { opacity: 0.9; }

.btn-sm { padding: 6px 14px; font-size: 13px; }

.btn-icon {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-icon:hover { color: var(--text); background: var(--bg-card-hover); }

.error-text {
  color: var(--danger);
  font-size: 13px;
  margin-top: 8px;
}

/* Map */
.map-page {
  display: flex;
  height: 100%;
  overflow: hidden;
}

.map-container {
  flex: 1;
  position: relative;
}

#map {
  width: 100%;
  height: 100%;
}

.map-sidebar {
  width: 320px;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.map-sidebar-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.map-sidebar-header h3 {
  font-size: 14px;
  font-weight: 600;
}

.member-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.member-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
}

.member-card:hover { background: var(--bg-card); }

.member-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  color: white;
  flex-shrink: 0;
  position: relative;
}

.member-status-dot {
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--bg-secondary);
}

.member-info {
  flex: 1;
  min-width: 0;
}

.member-name {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.member-detail {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
}

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

.card-title {
  font-size: 15px;
  font-weight: 600;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
}

/* Membership tiers */
.tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.15s;
  position: relative;
}

.tier-card.current {
  border-color: var(--primary);
}

.tier-card.highlight {
  border-color: var(--warning);
}

.tier-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.tier-badge.current-badge {
  background: var(--primary-bg);
  color: var(--primary);
}

.tier-badge.popular-badge {
  background: var(--warning-bg);
  color: var(--warning);
}

.tier-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.tier-price {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 4px;
}

.tier-price span {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
}

.tier-features {
  list-style: none;
  margin: 16px 0;
}

.tier-features li {
  padding: 6px 0;
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tier-features li::before {
  content: '';
  width: 16px;
  height: 16px;
  background: var(--success-bg);
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Circle */
.circle-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.15s;
  margin-bottom: 10px;
}

.circle-card:hover { border-color: var(--text-muted); }
.circle-card.active { border-color: var(--primary); background: var(--primary-bg); }

.circle-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-bg);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.circle-info {
  flex: 1;
  min-width: 0;
}

.circle-name {
  font-size: 14px;
  font-weight: 600;
}

.circle-meta {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(4px);
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 17px;
  font-weight: 600;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.modal-actions .btn { flex: 1; }

/* SOS banner */
.sos-btn {
  background: var(--danger);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.sos-btn:hover { opacity: 0.9; }

/* Invite code */
.invite-code-display {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 12px 0;
}

.invite-code-text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 4px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  flex: 1;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  z-index: 200;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Settings rows */
.settings-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.settings-row:last-child { border-bottom: none; }

.settings-row-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.settings-row-content {
  flex: 1;
}

.settings-row-label {
  font-size: 14px;
  font-weight: 500;
}

.settings-row-value {
  font-size: 12px;
  color: var(--text-secondary);
}

/* Circle selector in header */
.circle-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
}

.circle-selector:hover { border-color: var(--text-muted); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 40px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state p {
  font-size: 14px;
  max-width: 280px;
  margin: 0 auto;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.badge-primary { background: var(--primary-bg); color: var(--primary); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }

/* Loading spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 24px auto;
}

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

.loading-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    bottom: 0;
    z-index: 50;
    transition: left 0.25s;
  }
  .sidebar.open { left: 0; }
  .sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 40;
    display: none;
  }
  .sidebar-backdrop.open { display: block; }
  .map-sidebar { width: 100%; position: absolute; bottom: 0; height: 200px; border-left: none; border-top: 1px solid var(--border); }
  .map-container { height: calc(100% - 200px); }
  .menu-toggle { display: flex !important; }
  .content-grid { grid-template-columns: 1fr; }
}

@media (min-width: 769px) {
  .menu-toggle { display: none !important; }
  .sidebar-backdrop { display: none !important; }
}

/* Driving stats */
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  text-align: center;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.events-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.event-item {
  text-align: center;
  padding: 12px 8px;
  background: var(--bg);
  border-radius: var(--radius);
}

.event-value {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.event-value.event-warn { color: var(--warning); }

.event-label {
  font-size: 11px;
  color: var(--text-muted);
}

@media (max-width: 480px) {
  .stat-row { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat-value { font-size: 22px; }
  .events-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }