@import url('https://fonts.googleapis.com/css2?family=Ubuntu:ital,wght@0,300;0,400;0,500;0,700;1,400&display=swap');

:root {
  --brand-navy: #052c91;
  --brand-navy-dark: #031b5c;
  --brand-sky: #0088ff;
  --brand-sky-hover: #0077e6;
  --brand-sky-light: #f0f7ff;
  --brand-sky-glow: rgba(0, 136, 255, 0.22);
  --brand-gradient: linear-gradient(135deg, #052c91 0%, #0088ff 100%);
  --brand-gradient-hover: linear-gradient(135deg, #031b5c 0%, #0077e6 100%);
  
  --secondary: #64748b;
  --success: #10b981;
  --success-bg: #d1fae5;
  --warning: #f59e0b;
  --warning-bg: #fef3c7;
  --danger: #ef4444;
  --danger-bg: #fee2e2;
  --info: #0284c7;
  --info-bg: #e0f2fe;

  --dark: #0a192f;
  --light-bg: #f4f8fc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --font-family: 'Ubuntu', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --sidebar-width: 275px;
  --sidebar-collapsed-width: 80px;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 8px rgba(5, 44, 145, 0.04);
  --shadow-md: 0 10px 30px rgba(5, 44, 145, 0.07);
  --shadow-lg: 0 20px 40px rgba(5, 44, 145, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: clamp(14px, 0.8vw + 10px, 16px);
}

body {
  font-family: var(--font-family);
  background-color: var(--light-bg);
  color: var(--text-main);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1 { font-size: clamp(1.4rem, 2vw + 0.8rem, 2.2rem); font-weight: 700; color: var(--brand-navy); }
h2 { font-size: clamp(1.2rem, 1.5vw + 0.7rem, 1.75rem); font-weight: 700; color: var(--brand-navy); }
h3 { font-size: clamp(1rem, 1.2vw + 0.6rem, 1.35rem); font-weight: 700; color: var(--brand-navy); }

/* Layout Containers */
.app-container {
  display: flex;
  width: 100%;
  min-height: 100vh;
}

/* Sidebar Styles */
.app-sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, #031b5c 0%, #052c91 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  box-shadow: 4px 0 20px rgba(5, 44, 145, 0.15);
  transition: var(--transition);
}

.sidebar-header {
  padding: 1rem 1.25rem;
  border-bottom: 2px solid #0088ff;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.95);
  transition: var(--transition);
}

.sidebar-header img {
  max-height: 44px;
  width: auto;
  object-fit: contain;
  transition: var(--transition);
}

.sidebar-menu {
  list-style: none;
  padding: 1rem 0.75rem;
  overflow-y: auto;
  flex-grow: 1;
}

.sidebar-menu li {
  margin-bottom: 0.25rem;
}

.sidebar-menu li a {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1rem;
  color: #93c5fd;
  text-decoration: none;
  font-size: clamp(0.82rem, 0.5vw + 0.7rem, 0.92rem);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition);
  white-space: nowrap;
}

.sidebar-menu li a i {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-menu li a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  transform: translateX(4px);
}

.sidebar-menu li a.active {
  color: #ffffff;
  background: linear-gradient(90deg, var(--brand-sky) 0%, #00b4ff 100%);
  box-shadow: var(--brand-sky-glow);
  font-weight: 600;
}

.sidebar-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.sidebar-footer .user-name {
  font-weight: 700;
  color: #ffffff;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-footer .user-role {
  color: #38bdf8;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 2px;
}

/* SIDEBAR COLLAPSED STATE (ICON-ONLY MODE) */
body.sidebar-collapsed .app-sidebar {
  width: var(--sidebar-collapsed-width);
}

body.sidebar-collapsed .sidebar-header {
  padding: 0.75rem 0.5rem;
}

body.sidebar-collapsed .sidebar-header img {
  max-height: 32px;
}

body.sidebar-collapsed .sidebar-menu {
  padding: 1rem 0.4rem;
}

body.sidebar-collapsed .sidebar-menu li a {
  justify-content: center;
  padding: 0.85rem 0;
}

body.sidebar-collapsed .sidebar-menu li a span {
  display: none;
}

body.sidebar-collapsed .sidebar-footer {
  padding: 1rem 0.5rem;
  text-align: center;
}

body.sidebar-collapsed .sidebar-footer .user-name,
body.sidebar-collapsed .sidebar-footer .user-role,
body.sidebar-collapsed .sidebar-footer a span {
  display: none;
}

body.sidebar-collapsed .sidebar-footer a {
  justify-content: center;
  margin-top: 0;
}

body.sidebar-collapsed .app-main {
  margin-left: var(--sidebar-collapsed-width);
}

/* Main Area & Sticky Navbar */
.app-main {
  margin-left: var(--sidebar-width);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: var(--transition);
}

.app-navbar {
  background-color: #ffffff;
  height: 70px;
  padding: 0 2.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: var(--shadow-sm);
}

.app-content-wrapper {
  padding: clamp(1.25rem, 2vw, 2.25rem);
  flex-grow: 1;
}

/* Stats Cards */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-sky);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.stat-icon.primary { background: var(--brand-sky-light); color: var(--brand-sky); }
.stat-icon.success { background: var(--success-bg); color: var(--success); }
.stat-icon.warning { background: var(--warning-bg); color: var(--warning); }
.stat-icon.info { background: var(--info-bg); color: var(--info); }

.stat-details h3 {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.stat-details .value {
  font-size: clamp(1.35rem, 1.8vw, 1.8rem);
  font-weight: 800;
  color: var(--brand-navy);
  margin-top: 0.2rem;
}

/* Tables & Cards */
.card-table {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-bottom: 2rem;
  transition: var(--transition);
}

.card-header {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(90deg, #f8fafc 0%, #f0f7ff 100%);
  flex-wrap: wrap;
  gap: 1rem;
}

.card-title {
  font-size: clamp(1rem, 1.2vw + 0.5rem, 1.2rem);
  font-weight: 700;
  color: var(--brand-navy);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hms-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: clamp(0.85rem, 0.4vw + 0.75rem, 0.95rem);
}

.hms-table th {
  background-color: #f8fafc;
  padding: 1rem 1.25rem;
  font-weight: 700;
  color: var(--brand-navy);
  border-bottom: 2px solid var(--border-color);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.hms-table td {
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
  transition: background 0.15s ease;
}

.hms-table tbody tr:hover {
  background-color: var(--brand-sky-light);
}

/* DataTables Styling Overrides */
.dataTables_wrapper {
  overflow-x: auto;
}

.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  outline: none;
  font-size: 0.85rem;
}

.dataTables_wrapper .dataTables_filter input:focus {
  border-color: var(--brand-sky);
  box-shadow: 0 0 0 3px var(--brand-sky-glow);
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
  background: var(--brand-gradient) !important;
  color: white !important;
  border: none !important;
  border-radius: var(--radius-sm);
}

/* Buttons & Badges */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 1.35rem;
  font-size: clamp(0.8rem, 0.4vw + 0.7rem, 0.9rem);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);

}

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

.btn-primary {
  background: var(--brand-gradient);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--brand-gradient-hover);
  box-shadow: var(--brand-sky-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #f1f5f9;
  color: var(--brand-navy);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--brand-sky-light);
  color: var(--brand-sky);
  border-color: var(--brand-sky);
}

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }
.btn-warning { background: var(--warning); color: #fff; }

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-success { background: var(--success-bg); color: #065f46; }
.badge-warning { background: var(--warning-bg); color: #92400e; }
.badge-danger { background: var(--danger-bg); color: #991b1b; }
.badge-info { background: var(--brand-sky-light); color: var(--brand-navy); }

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-navy);
}

.form-control {
  padding: 0.7rem 0.95rem;
  font-size: 0.9rem;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: var(--transition);
  width: 100%;
  background-color: #ffffff;
}

.form-control:focus {
  border-color: var(--brand-sky);
  box-shadow: 0 0 0 4px var(--brand-sky-glow);
}

/* Alerts */
.alert {
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-success { background: var(--success-bg); color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: var(--danger-bg); color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: var(--warning-bg); color: #92400e; border: 1px solid #fde68a; }

/* PWA INSTALL BANNER */
.pwa-banner {
  display: none;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(90deg, #031b5c 0%, #052c91 100%);
  color: #ffffff;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-md);
}

/* ========================================================
   COMPREHENSIVE MOBILE-FIRST & CROSS-DEVICE RESPONSIVE SUITE
   ======================================================== */

body {
  overflow-x: hidden;
  max-width: 100vw;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 1rem;
}

/* Scrollable Horizontal Tab Bar for Mobile & Tablet */
.mobile-tab-bar {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 4px;
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--border-color);
}

.mobile-tab-bar::-webkit-scrollbar {
  height: 4px;
}
.mobile-tab-bar::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

/* POS Mobile Catalog vs Cart Switcher */
.pos-tab-switch {
  display: none;
  gap: 0.5rem;
  margin-bottom: 1rem;
  background: #f1f5f9;
  padding: 4px;
  border-radius: 10px;
}

.pos-tab-switch button {
  flex: 1;
  padding: 0.6rem;
  font-weight: 700;
  font-size: 0.85rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--secondary);
  cursor: pointer;
  transition: var(--transition);
}

.pos-tab-switch button.active {
  background: var(--brand-sky);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

@media (max-width: 992px) {
  /* Stack multi-column grids vertically on tablets & phones */
  div[style*="grid-template-columns: 2.1fr 1fr"],
  div[style*="grid-template-columns: 1.8fr 1fr"],
  div[style*="grid-template-columns: 1.5fr 1fr"],
  div[style*="grid-template-columns: 1fr 2.5fr"],
  div[style*="grid-template-columns: 1fr 2fr"],
  div[style*="grid-template-columns: 2fr 1fr"],
  div[style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  .pos-tab-switch {
    display: flex;
  }

  .app-sidebar {
    transform: translateX(-100%);
    width: 275px !important;
  }
  
  body.sidebar-open-mobile {
    overflow: hidden !important; /* Prevent background scrolling when sidebar is open */
  }
  
  body.sidebar-open-mobile .app-sidebar {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10, 25, 47, 0.6);
    backdrop-filter: blur(4px);
    z-index: 95;
  }

  body.sidebar-open-mobile .sidebar-overlay {
    display: block;
  }

  .app-main {
    margin-left: 0 !important;
    width: 100% !important;
  }

  .app-navbar {
    padding: 0.5rem 1rem;
    height: auto;
    min-height: 60px;
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .app-content-wrapper {
    padding: 1rem 0.75rem;
  }
}

@media (max-width: 768px) {
  .stat-grid {
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)) !important;
    gap: 0.75rem !important;
  }

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

  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  /* Prevent auto-zoom on iOS while preserving touch ergonomics */
  .form-control, 
  select.form-control, 
  textarea.form-control {
    font-size: 16px !important;
  }

  form[action*="billing"],
  form[action*="encounters"],
  form[action*="patients"] {
    padding: 0.75rem !important;
  }

  .shortcut-pill {
    padding: 0.4rem 0.75rem !important;
    font-size: 0.8rem !important;
  }

  .modal-content, 
  div[id*="modal"] > div {
    width: 95% !important;
    max-width: 95% !important;
    margin: 1rem auto !important;
    max-height: 90vh !important;
    overflow-y: auto !important;
    padding: 1.25rem !important;
  }

  .btn {
    min-height: 44px; /* Apple Human Interface Guideline for touch target */
    padding: 0.65rem 1.25rem !important;
  }

  .btn-sm {
    min-height: 36px;
  }

  .dataTables_wrapper .dataTables_length,
  .dataTables_wrapper .dataTables_filter {
    float: none !important;
    text-align: left !important;
    margin-bottom: 0.5rem !important;
  }

  .dataTables_wrapper .dataTables_filter input {
    width: 100% !important;
    margin-left: 0 !important;
    margin-top: 0.25rem !important;
  }

  .dataTables_wrapper .dataTables_info,
  .dataTables_wrapper .dataTables_paginate {
    float: none !important;
    text-align: center !important;
    margin-top: 0.5rem !important;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 13px;
  }

  .stat-card {
    padding: 0.85rem !important;
  }

  .card-table {
    padding: 0.85rem !important;
    border-radius: 10px !important;
  }

  .btn-mobile-block {
    width: 100% !important;
    justify-content: center !important;
  }

  table.hms-table th, 
  table.hms-table td {
    padding: 0.6rem 0.5rem !important;
    font-size: 0.78rem !important;
  }

  .pwa-banner {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.75rem !important;
  }
}

/* ========================================================
   GLOBAL PRINT ENGINE RULES & LAYOUT ISOLATION
   ======================================================== */
@media print {
  /* Suppress application shell navigation & layout UI */
  .app-sidebar,
  .app-navbar,
  .alert,
  .pwa-banner,
  .no-print,
  .sidebar-overlay,
  #pwa-install-banner {
    display: none !important;
  }

  body {
    background: #ffffff !important;
    color: #000000 !important;
    margin: 0 !important;
    padding: 0 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  .app-container {
    display: block !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .app-main {
    margin-left: 0 !important;
    padding: 0 !important;
    display: block !important;
  }

  .app-content-wrapper {
    padding: 0 !important;
    margin: 0 !important;
  }
}