:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --bg-primary: #0b132b;
  --bg-secondary: #1c2541;
  --bg-card: rgba(28, 37, 65, 0.75);
  --bg-card-hover: rgba(36, 48, 83, 0.85);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-focus: #3b82f6;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.35);
  
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --glass-blur: blur(16px);
}

[data-theme="light"] {
  --bg-primary: #f1f5f9;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --border-color: rgba(226, 232, 240, 0.8);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
}

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

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  background-image: 
    radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
.app-header {
  flex-shrink: 0;
  height: 68px;
  z-index: 50;
  backdrop-filter: var(--glass-blur);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #3b82f6, #10b981);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.patient-badge {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--primary);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.patient-badge:hover {
  background: rgba(59, 130, 246, 0.25);
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--primary);
}

.notification-count {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--danger);
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bg-secondary);
}

.user-profile-widget {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
}

.avatar-sm {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
}

/* Layout */
.main-content {
  max-width: 1280px;
  margin: 1.5rem auto;
  padding: 0 1.5rem 3rem 1.5rem;
}

/* Navigation Tabs */
.nav-pills {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-card);
  padding: 0.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 2rem;
  backdrop-filter: var(--glass-blur);
  overflow-x: auto;
}

.nav-pill-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.nav-pill-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-pill-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px var(--primary-glow);
}

/* Cards & Glassmorphism */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  margin-bottom: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

/* Grid Layouts */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-icon.blue { background: rgba(59, 130, 246, 0.15); color: #3b82f6; }
.stat-icon.green { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.stat-icon.amber { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.stat-icon.red { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

.stat-info h4 {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-info p {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0.2rem;
}

/* Tables & Scrollable Window */
.table-container {
  overflow-x: auto;
  overflow-y: auto;
  max-height: clamp(340px, calc(100vh - 350px), 650px);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: rgba(11, 19, 43, 0.4);
  position: relative;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) rgba(0, 0, 0, 0.2);
}

/* Custom sleek scrollbar for table containers */
.table-container::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.table-container::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}

.table-container::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

.table-container::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  text-align: left;
  font-size: 0.9rem;
}

th {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #18223f;
  backdrop-filter: var(--glass-blur);
  color: var(--text-secondary);
  padding: 0.9rem 1.25rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

[data-theme="light"] th {
  background: #e2e8f0;
  color: var(--text-primary);
}

td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-healthy {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
  animation: pulse-border 2s infinite;
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

@keyframes pulse-border {
  0% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4); }
  70% { box-shadow: 0 0 0 6px rgba(245, 158, 11, 0); }
  100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

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

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

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  border-radius: 6px;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.9rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-card);
  transform: scale(0.95);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal-dialog {
  transform: scale(1);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  transition: color 0.2s;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Alerts & Toasts */
#toast-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 380px;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-card);
  color: var(--text-primary);
  font-size: 0.875rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  animation: slide-in 0.3s ease;
}

.toast.warning { border-left-color: var(--warning); }
.toast.danger { border-left-color: var(--danger); }
.toast.success { border-left-color: var(--success); }

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

/* OTP Code Input Boxes */
.otp-input-group {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin: 1.5rem 0;
}

.otp-box {
  width: 48px;
  height: 56px;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid var(--border-color);
  color: var(--text-primary);
}

.otp-box:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 10px var(--primary-glow);
}

/* Hero / Auth Box */
.auth-wrapper {
  max-width: 440px;
  margin: 4rem auto;
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-header h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.auth-tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.auth-tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Days Remaining Indicator */
.days-indicator {
  font-size: 1.15rem;
  font-weight: 800;
  display: inline-flex;
  align-items: baseline;
  gap: 0.25rem;
}

.days-indicator span {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* ================== SIDEBAR LAYOUT ================== */
.app-layout {
  display: flex;
  flex: 1;
  min-height: 0;
  width: 100%;
  overflow: hidden;
  position: relative;
}

.sidebar {
  width: 270px;
  min-width: 270px;
  height: 100%;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--border-color);
  flex-shrink: 0;
  overflow-y: auto;
  transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  z-index: 40;
}

.sidebar.collapsed {
  margin-left: -270px; /* Push off screen on desktop */
}

.sidebar-header-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 1.25rem 1.25rem 0.5rem 1.25rem;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0 0.75rem;
  flex: 1;
}

/* Sidebar navigation buttons */
.sidebar .nav-pill-btn {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-align: left;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.sidebar .nav-pill-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  transform: translateX(3px);
}

.sidebar .nav-pill-btn.active {
  background: var(--primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 14px var(--primary-glow);
  border-color: rgba(255, 255, 255, 0.2);
}

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.15);
}

.sidebar-user-brief {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

.app-content {
  flex: 1;
  min-width: 0;
  height: 100%;
  overflow-y: auto;
  padding: 2rem 2.5rem 4rem 2.5rem;
  background: transparent;
  scroll-behavior: smooth;
}

.sidebar-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-right: 0.75rem;
  transition: all 0.2s ease;
}

.sidebar-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  color: var(--primary);
}

/* Mobile responsive */
@media (max-width: 768px) {
  .app-header {
    padding: 0.75rem 1rem;
  }
  
  .sidebar {
    position: fixed;
    top: 68px;
    left: 0;
    bottom: 0;
    width: 280px;
    min-width: 280px;
    height: calc(100% - 68px);
    z-index: 1000;
    box-shadow: 4px 0 25px rgba(0, 0, 0, 0.6);
    margin-left: 0 !important;
    transform: translateX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .sidebar.collapsed {
    transform: translateX(-100%);
  }
  
  .sidebar-backdrop {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    z-index: 999;
  }
  
  .sidebar-backdrop.active {
    display: block;
  }
  
  .app-content {
    padding: 1.25rem 1rem 3rem 1rem;
  }
}

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