:root {
  --bg: #000000;
  --surface: #121212;
  --surface-2: #1e1e1e;
  --text: #ffffff;
  --text-secondary: #a0a0a0;
  --accent: #276EF1;
  --accent-hover: #1a5fd1;
  --success: #00C853;
  --danger: #FF3D00;
  --warning: #FFD600;
  --border: #2a2a2a;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Inter, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent), #00C6FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo span { font-weight: 400; opacity: 0.7; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

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

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: #2a2a2a; }

.btn-success { background: var(--success); color: #000; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 14px 24px; font-size: 16px; width: 100%; }

/* Hero */
.hero {
  padding: 40px 20px;
  text-align: center;
  background: linear-gradient(180deg, rgba(39,110,241,0.1) 0%, transparent 100%);
}

.hero h1 {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 12px;
}

.hero p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 24px;
}

/* Search Box */
.search-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 0 16px 24px;
}

.search-box .row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.search-box select, .search-box input {
  flex: 1;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-size: 15px;
  outline: none;
}

.search-box select:focus, .search-box input:focus {
  border-color: var(--accent);
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 0 16px 12px;
  transition: transform 0.15s, border-color 0.15s;
}

.card:active { transform: scale(0.98); }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.card-title {
  font-size: 17px;
  font-weight: 700;
}

.card-sub {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Status Badge */
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}

.status-available {
  background: rgba(0, 200, 83, 0.15);
  color: var(--success);
}

.status-busy {
  background: rgba(255, 61, 0, 0.15);
  color: var(--danger);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

/* Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.tag {
  background: var(--surface-2);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}

.tag-zone {
  background: rgba(39, 110, 241, 0.15);
  color: var(--accent);
}

/* Listing Detail Grid */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.detail-item {
  background: var(--surface-2);
  padding: 10px;
  border-radius: var(--radius-sm);
}

.detail-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.detail-value {
  font-size: 15px;
  font-weight: 700;
}

/* Bottom Nav */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.9);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
  z-index: 100;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 11px;
  font-weight: 500;
  border: none;
  background: none;
  cursor: pointer;
}

.nav-item.active { color: var(--accent); }
.nav-item svg { opacity: 0.7; }
.nav-item.active svg { opacity: 1; }

/* Sections */
.section { padding: 0 16px 100px; }
.section-title {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 16px;
  margin-top: 8px;
}

/* Form Styles */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-size: 15px;
  outline: none;
  font-family: inherit;
}

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

.form-group textarea {
  min-height: 80px;
  resize: vertical;
}

/* Toggle Switch */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.toggle-label {
  font-size: 15px;
  font-weight: 600;
}

.toggle {
  width: 50px;
  height: 28px;
  background: var(--surface-2);
  border-radius: 14px;
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
  border: 1px solid var(--border);
}

.toggle.on {
  background: var(--success);
  border-color: var(--success);
}

.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 22px;
  height: 22px;
  background: white;
  border-radius: 50%;
  transition: transform 0.2s;
}

.toggle.on::after {
  transform: translateX(22px);
}

/* Empty State */
.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty svg {
  margin-bottom: 16px;
  opacity: 0.5;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease-out;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: 200;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius) var(--radius) 0 0;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 20px;
  transform: translateY(100%);
  transition: transform 0.3s ease-out;
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

/* Responsive */
@media (min-width: 768px) {
  .hero h1 { font-size: 48px; }
  .card, .search-box { max-width: 600px; margin-left: auto; margin-right: auto; }
  .section { max-width: 600px; margin: 0 auto; }
  .bottom-nav { display: none; }
}

@media (max-width: 767px) {
  body { padding-bottom: 70px; }
}