:root {
  --bg-main: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-sidebar: #0B0F19;
  --bg-card: #FFFFFF;
  --border-color: #E2E8F0;
  --border-subtle: #F1F5F9;

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-inverse: #FFFFFF;

  --primary: #0284C7;
  --primary-hover: #0369A1;
  --primary-light: #E0F2FE;
  --primary-glow: rgba(2, 132, 199, 0.25);

  --emerald: #10B981;
  --emerald-light: #D1FAE5;
  --amber: #F59E0B;
  --amber-light: #FEF3C7;
  --rose: #EF4444;
  --rose-light: #FEE2E2;
  --indigo: #6366F1;
  --indigo-light: #EEF2FF;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(2, 132, 199, 0.15);

  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

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

/* App Layout */
.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  color: var(--text-inverse);
  display: flex;
  flex-direction: column;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.sidebar-brand {
  padding: 24px 20px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #0284C7, #38BDF8);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-main);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: #FFFFFF;
}

.brand-badge {
  font-size: 10px;
  font-weight: 700;
  color: #38BDF8;
  letter-spacing: 0.05em;
}

.tenant-badge-card {
  margin: 0 16px 20px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
}

.tenant-label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #94A3B8;
  font-weight: 700;
}

.tenant-name {
  font-size: 13px;
  font-weight: 600;
  color: #F8FAFC;
  margin: 2px 0 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tenant-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: #34D399;
}

.status-dot {
  width: 7px;
  height: 7px;
  background-color: #34D399;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 6px #34D399;
}

.sidebar-nav {
  padding: 0 12px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-section-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #64748B;
  padding: 12px 10px 6px;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: #94A3B8;
  font-family: var(--font-main);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
  text-align: left;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #F8FAFC;
}

.nav-item.active {
  background: #0284C7;
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.nav-count {
  margin-left: auto;
  background: rgba(255, 255, 255, 0.15);
  font-size: 11px;
  padding: 1px 7px;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.nav-pill {
  margin-left: auto;
  background: rgba(56, 189, 248, 0.15);
  color: #38BDF8;
  font-size: 10px;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.nav-pill.pulse {
  background: rgba(16, 185, 129, 0.2);
  color: #34D399;
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.system-health {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.03);
  padding: 8px 12px;
  border-radius: var(--radius-md);
}

.health-icon {
  font-size: 16px;
}

.health-details {
  display: flex;
  flex-direction: column;
}

.health-title {
  font-size: 11px;
  font-weight: 700;
  color: #F8FAFC;
}

.health-sub {
  font-size: 10px;
  color: #94A3B8;
  font-family: var(--font-mono);
}

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

/* Top Navbar */
.top-navbar {
  height: 68px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.search-bar-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #F1F5F9;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  width: 380px;
  border: 1px solid transparent;
  transition: all 0.2s;
}

.search-bar-wrapper:focus-within {
  border-color: var(--primary);
  background: #FFFFFF;
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.search-bar-wrapper input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 13.5px;
  width: 100%;
  color: var(--text-primary);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.user-avatar-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 14px;
  border-left: 1px solid var(--border-color);
}

.avatar-circle {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #0F172A, #334155);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 13px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-info {
  display: flex;
  flex-direction: column;
}

.avatar-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}

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

/* Tabs */
.tab-pane {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 32px;
}

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

/* Page Header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
}

.page-title {
  font-family: var(--font-main);
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.page-subtitle {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
}

.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.25);
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
}

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

.btn-secondary:hover {
  background: #F8FAFC;
  color: var(--text-primary);
  border-color: #CBD5E1;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* Stats Cards Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.stat-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.stat-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon-wrap.cyan { background: var(--primary-light); color: var(--primary); }
.stat-icon-wrap.indigo { background: var(--indigo-light); color: var(--indigo); }
.stat-icon-wrap.emerald { background: var(--emerald-light); color: var(--emerald); }
.stat-icon-wrap.amber { background: var(--amber-light); color: var(--amber); }

.stat-value {
  font-family: var(--font-main);
  font-size: 26px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stat-trend {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  font-weight: 600;
  margin-top: 6px;
}

.stat-trend.positive { color: var(--emerald); }
.stat-trend.neutral { color: var(--text-secondary); }
.stat-trend.warning { color: var(--amber); }

/* Dashboard 2-column Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Schedule List */
.schedule-list {
  padding: 12px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.schedule-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #F8FAFC;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all 0.15s;
}

.schedule-item:hover {
  border-color: var(--border-color);
  background: #FFFFFF;
  box-shadow: var(--shadow-sm);
}

.schedule-time {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.schedule-info {
  flex: 1;
  margin-left: 16px;
}

.schedule-patient {
  font-weight: 700;
  font-size: 13.5px;
  color: var(--text-primary);
}

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

.status-chip {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.status-chip.in-chair { background: var(--emerald-light); color: var(--emerald); }
.status-chip.confirmed { background: var(--primary-light); color: var(--primary); }
.status-chip.scheduled { background: #F1F5F9; color: var(--text-secondary); }

/* Patient Quick List */
.patient-quick-list {
  padding: 12px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.patient-row-quick {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: #F8FAFC;
}

.patient-row-quick:hover {
  background: #F1F5F9;
}

.p-name {
  font-weight: 700;
  font-size: 13.5px;
}

.p-meta {
  font-size: 11.5px;
  color: var(--text-muted);
}

/* Data Table */
.table-controls {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.filter-input {
  width: 400px;
  padding: 8px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13.5px;
  outline: none;
}

.filter-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.table-responsive {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.data-table th {
  background: #F8FAFC;
  padding: 12px 24px;
  font-weight: 700;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.data-table td {
  padding: 14px 24px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.data-table tr:hover td {
  background: #F8FAFC;
}

.allergy-badge {
  display: inline-block;
  background: var(--rose-light);
  color: var(--rose);
  font-weight: 700;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  margin-right: 4px;
}

/* Chair Scheduling Cards */
.chair-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.chair-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

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

.chair-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 6px;
}

.chair-badge.surgical { background: var(--rose-light); color: var(--rose); }
.chair-badge.ortho { background: var(--indigo-light); color: var(--indigo); }
.chair-badge.hygiene { background: var(--emerald-light); color: var(--emerald); }

.chair-card h4 {
  font-size: 14px;
  font-weight: 700;
}

.occupancy-pill {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.occupancy-pill.occupied { background: var(--emerald-light); color: var(--emerald); }
.occupancy-pill.reserved { background: var(--amber-light); color: var(--amber); }
.occupancy-pill.ready { background: #F1F5F9; color: var(--text-muted); }

.chair-current-patient {
  background: #F8FAFC;
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.chair-current-patient .val {
  font-size: 13px;
  font-weight: 700;
}

.chair-current-patient .timer {
  font-size: 11.5px;
  color: var(--text-secondary);
}

.mt-4 { margin-top: 24px; }

/* Gateway Cards */
.gateway-status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gateway-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.gateway-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.gateway-name {
  font-family: var(--font-main);
  font-weight: 800;
  font-size: 16px;
}

.gateway-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.gateway-badge.active { background: var(--emerald-light); color: var(--emerald); }
.gateway-badge.standby { background: #F1F5F9; color: var(--text-secondary); }

.gateway-desc {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.gateway-metric {
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 10px;
}

/* AI Chat Layout */
.ai-chat-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  height: calc(100vh - 200px);
}

.ai-chat-sidebar {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ai-chat-sidebar h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.prompt-chip {
  background: #F8FAFC;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  text-align: left;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
}

.prompt-chip:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

.ai-chat-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-bubble {
  max-width: 80%;
  padding: 14px 18px;
  border-radius: var(--radius-lg);
  font-size: 13.5px;
  line-height: 1.5;
}

.chat-bubble.ai {
  align-self: flex-start;
  background: #F8FAFC;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.chat-bubble.user {
  align-self: flex-end;
  background: var(--primary);
  color: #FFFFFF;
}

.chat-sender {
  font-size: 11px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--primary);
}

.chat-bubble.user .chat-sender {
  color: rgba(255, 255, 255, 0.8);
}

.chat-input-bar {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 12px;
  background: #FFFFFF;
}

.chat-input-bar input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  outline: none;
  font-size: 13.5px;
}

.chat-input-bar input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Modal */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-backdrop.open {
  display: flex;
}

.modal-content {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  width: 520px;
  max-width: 90vw;
  box-shadow: var(--shadow-lg);
  animation: modal-slide 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modal-slide {
  from { transform: translateY(20px) scale(0.97); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-main);
  font-size: 17px;
  font-weight: 700;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.form-group label {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-secondary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-input, .form-textarea {
  padding: 9px 13px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-family: inherit;
  outline: none;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  background: #F8FAFC;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Toast Container */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: #0F172A;
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toast-in 0.25s ease-out;
}

@keyframes toast-in {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}