@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-primary: #0A1628;
  --bg-secondary: #0F1D35;
  --bg-card: #13213D;
  --accent: #00D4AA;
  --accent-hover: #00BF99;
  --danger: #FF4444;
  --warning: #FFB347;
  --success: #00C851;
  --text-primary: #FFFFFF;
  --text-secondary: #A0AEC0;
  --text-muted: #6B7B9D;
  --border: #1E2D4A;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: var(--accent);
  transition: var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  outline: none;
  transition: var(--transition);
}

input, select, textarea {
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(0, 212, 170, 0.3);
}

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

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

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

.btn-danger:hover {
  background: #cc3333;
  transform: translateY(-1px);
}

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

.btn-warning:hover {
  background: #e69e30;
  transform: translateY(-1px);
}

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

.btn-success:hover {
  background: #00a844;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 12px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(0, 212, 170, 0.2);
}

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

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.form-input::placeholder {
  color: var(--text-muted);
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23A0AEC0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

textarea.form-input {
  resize: vertical;
  min-height: 100px;
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(0, 212, 170, 0.05);
}

.drop-zone-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.drop-zone-text {
  color: var(--text-secondary);
  font-size: 14px;
}

.drop-zone-text strong {
  color: var(--accent);
}

.drop-zone-hint {
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 8px;
}

/* Thumbnails */
.thumbnail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.thumbnail-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}

.thumbnail-item img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  display: block;
}

.thumbnail-info {
  padding: 8px;
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.thumbnail-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--danger);
  color: white;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.thumbnail-item:hover .thumbnail-remove {
  opacity: 1;
}

/* Loading States */
.loading-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  color: var(--text-muted);
  font-size: 14px;
}

.loading-step.active {
  color: var(--accent);
}

.loading-step.done {
  color: var(--success);
}

.loading-step .step-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

.loading-step.done .step-icon {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.loading-step.active .step-icon {
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Alerts & Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-danger {
  background: rgba(255, 68, 68, 0.15);
  color: var(--danger);
}

.badge-warning {
  background: rgba(255, 179, 71, 0.15);
  color: var(--warning);
}

.badge-success {
  background: rgba(0, 200, 81, 0.15);
  color: var(--success);
}

.badge-info {
  background: rgba(0, 212, 170, 0.15);
  color: var(--accent);
}

.alert {
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.alert-danger {
  background: rgba(255, 68, 68, 0.1);
  border: 1px solid rgba(255, 68, 68, 0.2);
  color: var(--danger);
}

.alert-warning {
  background: rgba(255, 179, 71, 0.1);
  border: 1px solid rgba(255, 179, 71, 0.2);
  color: var(--warning);
}

.alert-success {
  background: rgba(0, 200, 81, 0.1);
  border: 1px solid rgba(0, 200, 81, 0.2);
  color: var(--success);
}

.alert-info {
  background: rgba(0, 212, 170, 0.1);
  border: 1px solid rgba(0, 212, 170, 0.2);
  color: var(--accent);
}

/* Status indicator */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
}

.status-dot.critical { background: var(--danger); }
.status-dot.warning { background: var(--warning); }
.status-dot.normal { background: var(--success); }
.status-dot.pending { background: var(--warning); animation: pulse 1s infinite; }

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

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

tr:hover td {
  background: rgba(0, 212, 170, 0.02);
}

/* Progress bar */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease;
  background: var(--accent);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: rgba(0, 212, 170, 0.2);
  transform: translateY(-2px);
}

.stat-card-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.stat-card-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-card-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.stat-card-change {
  font-size: 12px;
  margin-top: 8px;
}

.stat-card-change.positive { color: var(--success); }
.stat-card-change.negative { color: var(--danger); }

/* Header/Nav */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-user {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 24px;
  overflow-x: auto;
}

.tab {
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  border: none;
}

.tab.active {
  background: var(--bg-card);
  color: var(--accent);
}

.tab:hover:not(.active) {
  color: var(--text-primary);
}

/* Page sections */
.section {
  display: none;
}

.section.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Layout with sidebar */
.app-layout {
  display: flex;
  min-height: calc(100vh - 73px);
}

.sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  flex-shrink: 0;
  position: sticky;
  top: 73px;
  height: calc(100vh - 73px);
  overflow-y: auto;
}

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

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
}

.sidebar-link:hover {
  background: rgba(0, 212, 170, 0.08);
  color: var(--text-primary);
}

.sidebar-link.active {
  background: rgba(0, 212, 170, 0.12);
  color: var(--accent);
  font-weight: 600;
}

.sidebar-link .sidebar-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: 12px 16px;
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 16px 4px;
}

.main-content {
  flex: 1;
  padding: 24px 32px;
  min-width: 0;
}

@media (max-width: 768px) {
  .app-layout {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
  }
  .sidebar-nav {
    flex-direction: row;
    overflow-x: auto;
    padding: 0 16px;
    -webkit-overflow-scrolling: touch;
  }
  .sidebar-link {
    white-space: nowrap;
    padding: 10px 16px;
  }
  .main-content {
    padding: 16px;
  }
}

/* Page header */
.page-header {
  margin-bottom: 24px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 4px;
}

.page-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Auth page */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
}

.auth-logo {
  text-align: center;
  margin-bottom: 32px;
}

.auth-logo h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
}

.auth-logo p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

/* Dashboard layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.dashboard-full {
  grid-column: 1 / -1;
}

/* Doctor leaderboard */
.leaderboard-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

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

.leaderboard-rank {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  flex-shrink: 0;
}

.leaderboard-item:nth-child(1) .leaderboard-rank {
  background: rgba(255, 179, 71, 0.2);
  color: var(--warning);
}

.leaderboard-item:nth-child(2) .leaderboard-rank {
  background: rgba(192, 192, 192, 0.15);
  color: #C0C0C0;
}

.leaderboard-item:nth-child(3) .leaderboard-rank {
  background: rgba(205, 127, 50, 0.15);
  color: #CD7F32;
}

.leaderboard-info {
  flex: 1;
}

.leaderboard-name {
  font-size: 14px;
  font-weight: 600;
}

.leaderboard-spec {
  font-size: 12px;
  color: var(--text-muted);
}

.leaderboard-count {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

/* Results page */
.result-section {
  margin-bottom: 24px;
}

.result-section h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.value-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.value-row:last-child {
  border-bottom: none;
}

.value-name {
  font-size: 14px;
  font-weight: 500;
}

.value-result {
  display: flex;
  align-items: center;
  gap: 12px;
}

.value-number {
  font-size: 14px;
  font-weight: 600;
}

.value-unit {
  font-size: 12px;
  color: var(--text-muted);
}

/* Login page */
.login-error {
  color: var(--danger);
  font-size: 13px;
  text-align: center;
  margin-top: 12px;
  display: none;
}

/* Auto-refresh indicator */
.refresh-indicator {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.refresh-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

/* Section divider */
.section-divider {
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

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

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

  .header-content {
    flex-direction: column;
    gap: 12px;
  }

  .auth-card {
    padding: 24px;
  }

  .page-title {
    font-size: 22px;
  }

  .tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tab {
    padding: 8px 16px;
    font-size: 13px;
  }

  .stat-card-value {
    font-size: 28px;
  }

  .table-container {
    margin: 0 -16px;
    padding: 0 16px;
  }

  .thumbnail-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .auth-card {
    padding: 20px;
  }
}

/* Print styles for PDF export */
@media print {
  body { background: white !important; color: black !important; }
  .header, .sidebar, .tabs, .btn, .no-print { display: none !important; }
  .app-layout { display: block !important; }
  .main-content { padding: 0 !important; max-width: 100% !important; }
  .card { background: white !important; border: 1px solid #ddd !important; box-shadow: none !important; break-inside: avoid; }
  .card:hover { border-color: #ddd !important; }
  .result-section h3 { color: #333 !important; border-bottom-color: #ddd !important; }
  .value-name, .value-number { color: #222 !important; }
  .value-unit { color: #666 !important; }
  .alert { border: 1px solid #ddd !important; }
  .alert-success { color: #155724 !important; background: #d4edda !important; }
  .page-title { color: #111 !important; }
  .page-subtitle { color: #555 !important; }
  .stat-card { background: #f8f9fa !important; border-color: #dee2e6 !important; }
  .stat-card-value { color: #111 !important; }
  .stat-card-label { color: #555 !important; }
  .step-indicator, .loading-overlay { display: none !important; }
  @page { margin: 20mm; }
}