/**
 * Smart Health ATM - Modern Medical & IoT Design System
 */

:root {
  --primary: #0d9488;
  --primary-hover: #0f766e;
  --primary-light: #ccfbf1;
  --primary-dark: #115e59;

  --accent-cyan: #0284c7;
  --accent-cyan-light: #e0f2fe;

  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #ef4444;
  --danger-light: #fee2e2;

  --bg-app: #f8fafc;
  --bg-surface: #ffffff;
  --bg-sidebar: #0f172a;
  --bg-sidebar-hover: #1e293b;
  --sidebar-text: #94a3b8;
  --sidebar-active-text: #ffffff;

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --border-color: #e2e8f0;
  --border-light: #f1f5f9;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --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-card: 0 2px 8px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.02);

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
}

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

/* Sidebar */
.app-sidebar {
  width: 270px;
  background-color: var(--bg-sidebar);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 100;
  transition: transform 0.3s ease;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-brand {
  padding: 1.5rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.875rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #0d9488, #0284c7);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.35rem;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.35);
}

.brand-text h2 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.brand-text span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #38bdf8;
  font-weight: 600;
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0.75rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-section-title {
  font-size: 0.68rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #475569;
  padding: 0.75rem 0.75rem 0.35rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.875rem;
  border-radius: var(--radius-sm);
  color: var(--sidebar-text);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.nav-link i {
  font-size: 1.1rem;
  width: 22px;
  text-align: center;
  transition: transform 0.2s ease;
}

.nav-link:hover {
  background-color: var(--bg-sidebar-hover);
  color: #fff;
  transform: translateX(2px);
}

.nav-link.active {
  background: linear-gradient(90deg, rgba(13, 148, 136, 0.25), rgba(13, 148, 136, 0.05));
  color: #5eead4;
  font-weight: 600;
  border-left: 3px solid #14b8a6;
}

.nav-badge {
  margin-left: auto;
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 600;
}

.nav-badge.danger {
  background-color: #ef4444;
  color: #fff;
}

.nav-badge.info {
  background-color: #0284c7;
  color: #fff;
}

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-snippet {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #334155;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
}

.user-meta h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: #f8fafc;
}

.user-meta p {
  font-size: 0.72rem;
  color: #64748b;
}

/* Main Content Area */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-x: hidden;
}

/* Top Navigation Bar */
.app-topbar {
  background-color: var(--bg-surface);
  height: 68px;
  border-bottom: 1px solid var(--border-color);
  padding: 0 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
}

.topbar-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.875rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.status-pill.online {
  background-color: var(--success-light);
  color: #065f46;
}

.status-pill.offline {
  background-color: var(--danger-light);
  color: #991b1b;
}

.status-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  position: relative;
}

.status-pill.online .status-pulse {
  background-color: #10b981;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.4);
  animation: pulse-green 2s infinite;
}

.status-pill.offline .status-pulse {
  background-color: #ef4444;
}

@keyframes pulse-green {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.machine-selector select {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  outline: none;
  cursor: pointer;
  transition: border 0.2s;
}

.machine-selector select:focus {
  border-color: var(--primary);
}

/* Page Content Body */
.page-content {
  padding: 1.75rem;
  flex: 1;
}

/* Modern Metric Cards Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.metric-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.metric-info h5 {
  font-size: 0.8rem;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.metric-info .metric-value {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.metric-info .metric-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.metric-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.metric-icon-box.teal {
  background: #ccfbf1;
  color: #0f766e;
}

.metric-icon-box.blue {
  background: #e0f2fe;
  color: #0369a1;
}

.metric-icon-box.amber {
  background: #fef3c7;
  color: #b45309;
}

.metric-icon-box.purple {
  background: #ede9fe;
  color: #6d28d9;
}

.metric-icon-box.red {
  background: #fee2e2;
  color: #b91c1c;
}

/* Content Panels / Cards */
.card-panel {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  margin-bottom: 1.75rem;
  overflow: hidden;
}

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

.panel-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.panel-body {
  padding: 1.5rem;
}

/* Alert Banner */
.alert-banner {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.alert-banner.warning {
  background-color: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
}

.alert-banner.danger {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.alert-content {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.alert-content i {
  font-size: 1.25rem;
}

/* Data Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.data-table th {
  background-color: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background 0.15s ease;
}

.data-table tbody tr:hover {
  background-color: #f8fafc;
}

/* 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-success {
  background: var(--success-light);
  color: #065f46;
}

.badge-warning {
  background: var(--warning-light);
  color: #92400e;
}

.badge-danger {
  background: var(--danger-light);
  color: #991b1b;
}

.badge-info {
  background: var(--accent-cyan-light);
  color: #0369a1;
}

.badge-neutral {
  background: #f1f5f9;
  color: #475569;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--primary);
  color: #fff;
  box-shadow: 0 2px 6px rgba(13, 148, 136, 0.3);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 10px rgba(13, 148, 136, 0.4);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  background-color: #f1f5f9;
  border-color: #cbd5e1;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
}

.btn-danger {
  background-color: #ef4444;
  color: #fff;
}

.btn-danger:hover {
  background-color: #dc2626;
}

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

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.6rem 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  outline: none;
  background: #fff;
  transition: border 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* Telemetry Diagnostics Grid */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.telemetry-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.telemetry-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
}

.telemetry-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Progress bar */
.progress-bar-wrap {
  background: #e2e8f0;
  border-radius: 9999px;
  height: 8px;
  overflow: hidden;
  margin: 0.5rem 0;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 9999px;
  background: linear-gradient(90deg, #0d9488, #10b981);
  transition: width 0.4s ease;
}

.progress-bar-fill.low {
  background: linear-gradient(90deg, #f59e0b, #ef4444);
}

/* Toast Container */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 9999;
}

.toast {
  background: #0f172a;
  color: #fff;
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  min-width: 280px;
  animation: slideInRight 0.3s ease;
}

.toast.success { border-left: 4px solid #10b981; }
.toast.danger  { border-left: 4px solid #ef4444; }
.toast.warning { border-left: 4px solid #f59e0b; }

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

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 540px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.2s ease;
}

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

.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-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
}

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

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background: #f8fafc;
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .app-sidebar {
    position: fixed;
    transform: translateX(-100%);
  }
  .app-sidebar.open {
    transform: translateX(0);
  }
  .mobile-toggle-btn {
    display: block;
  }
}

@media (max-width: 640px) {
  .page-content {
    padding: 1rem;
  }
  .app-topbar {
    padding: 0 1rem;
  }
  .metric-card {
    padding: 1rem;
  }
  .metric-info .metric-value {
    font-size: 1.4rem;
  }
}