/* MediCare HMS — Design System */
:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #14b8a6;
  --primary-bg: #ccfbf1;
  --accent: #6366f1;
  --bg: #f0f4f8;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --radius: 12px;
  --radius-sm: 8px;
  --sidebar-w: 260px;
  --topbar-h: 64px;
  --font: 'DM Sans', system-ui, sans-serif;
  --transition: 0.2s ease;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

#app {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  background: linear-gradient(180deg, #0f766e 0%, #115e59 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-icon svg { width: 24px; height: 24px; }

.brand-name {
  display: block;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-tag {
  font-size: 0.7rem;
  opacity: 0.75;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: background var(--transition), color var(--transition);
}

.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }

.nav-item:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.nav-item.active {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.user-mini {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

.user-name { display: block; font-weight: 600; font-size: 0.875rem; }
.user-role { font-size: 0.75rem; opacity: 0.7; }

/* Main */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--text);
}

.menu-toggle svg { width: 24px; height: 24px; }

.search-box {
  flex: 1;
  max-width: 400px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.search-box svg { width: 18px; height: 18px; color: var(--text-muted); flex-shrink: 0; }

.search-box input {
  flex: 1;
  border: none;
  background: none;
  padding: 10px 0;
  font-family: inherit;
  font-size: 0.9375rem;
  outline: none;
}

.topbar-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.date-display {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.btn-icon {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition);
}

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

.btn-icon svg { width: 18px; height: 18px; }

.content {
  flex: 1;
  padding: 24px;
}

/* Page header */
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-header p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-top: 4px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.btn svg { width: 18px; height: 18px; }

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

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

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

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

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

.btn-danger:hover { background: #fee2e2; }

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8125rem;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: 6px 10px;
}

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

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon svg { width: 24px; height: 24px; }

.stat-icon.teal { background: var(--primary-bg); color: var(--primary); }
.stat-icon.indigo { background: #e0e7ff; color: var(--accent); }
.stat-icon.amber { background: var(--warning-bg); color: var(--warning); }
.stat-icon.green { background: var(--success-bg); color: var(--success); }

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Cards & panels */
.panel {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.panel-header h2 {
  font-size: 1rem;
  font-weight: 600;
}

.panel-body { padding: 0; }

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 1024px) {
  .dashboard-grid { grid-template-columns: 1fr; }
}

/* Table */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

th, td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg);
}

tr:last-child td { border-bottom: none; }

tr:hover td { background: #f8fafc; }

.table-actions {
  display: flex;
  gap: 4px;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
}

.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); }
.badge-info { background: var(--primary-bg); color: var(--primary-dark); }
.badge-neutral { background: var(--bg); color: var(--text-muted); }

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }

label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
}

input, select, textarea {
  font-family: inherit;
  font-size: 0.9375rem;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

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

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  opacity: 0.4;
}

/* Room cards */
.rooms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  padding: 20px;
}

.room-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  transition: border-color var(--transition);
}

.room-card.occupied { border-left: 4px solid var(--warning); }
.room-card.available { border-left: 4px solid var(--success); }
.room-card.maintenance { border-left: 4px solid var(--danger); }

.room-number { font-weight: 700; font-size: 1.125rem; }
.room-type { font-size: 0.8125rem; color: var(--text-muted); margin: 4px 0 12px; }

/* Modal */
.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: 200;
  padding: 24px;
  animation: fadeIn 0.2s ease;
}

.modal-overlay[hidden] { display: none; }

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.25s ease;
}

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

.modal-header h2 { font-size: 1.125rem; font-weight: 600; }

.btn-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}

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

.modal-body { padding: 24px; overflow-y: auto; }

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--text);
  color: #fff;
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
  max-width: 320px;
}

.toast.success { background: var(--primary-dark); }
.toast.error { background: var(--danger); }

/* Activity list */
.activity-list { list-style: none; }

.activity-item {
  display: flex;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.activity-item:last-child { border-bottom: none; }

.activity-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 6px;
  flex-shrink: 0;
}

.activity-text { font-size: 0.9375rem; }
.activity-time { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open { transform: translateX(0); }

  .main { margin-left: 0; }

  .menu-toggle { display: flex; }

  .form-grid { grid-template-columns: 1fr; }

  .content { padding: 16px; }

  .search-box { max-width: none; }

  .date-display { display: none; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}