/* ==========================================================================
   VKU FIELD SURVEY PWA - STYLESHEET
   Offline-first modern responsive CSS with VKU branding & Touch-First UI
   ========================================================================== */

:root {
  --primary-navy: #1E3A8A;
  --primary-blue: #2563EB;
  --accent-orange: #EA580C;
  --accent-yellow: #D97706;
  --success-green: #059669;
  --danger-red: #DC2626;
  --emergency-darkred: #991B1B;

  --bg-main: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-subtle: #F1F5F9;
  
  --text-main: #0F172A;
  --text-muted: #64748B;
  --text-inverse: #FFFFFF;

  --border-color: #E2E8F0;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================
   HEADER
   ========================================== */
.app-header {
  background: linear-gradient(135deg, var(--primary-navy) 0%, #1E40AF 100%);
  color: var(--text-inverse);
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.header-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.logo-badge {
  background: var(--accent-orange);
  color: #FFF;
  font-weight: 900;
  font-size: 18px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
}

.brand-text p {
  font-size: 11px;
  opacity: 0.85;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.status-badge.online {
  background-color: rgba(5, 150, 105, 0.2);
  color: #34D399;
  border: 1px solid #059669;
}

.status-badge.offline {
  background-color: rgba(220, 38, 38, 0.2);
  color: #FCA5A5;
  border: 1px solid #DC2626;
}

.status-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-badge.online .dot {
  background-color: #34D399;
  box-shadow: 0 0 8px #34D399;
}

.status-badge.offline .dot {
  background-color: #FCA5A5;
}

.btn-install {
  background-color: var(--accent-orange);
  color: white;
  border: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
}

/* ==========================================
   NAVIGATION
   ========================================== */
.app-nav {
  background-color: var(--bg-card);
  display: flex;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 60px;
  z-index: 90;
}

.nav-tab {
  flex: 1;
  padding: 12px 8px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.nav-tab.active {
  color: var(--primary-navy);
  border-bottom-color: var(--accent-orange);
  background-color: rgba(30, 58, 138, 0.03);
}

/* ==========================================
   MAIN CONTENT
   ========================================== */
.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  width: 100%;
  flex: 1;
}

.tab-page {
  display: none;
}

.tab-page.active {
  display: block;
}

/* ==========================================
   METRICS GRID
   ========================================== */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.metric-card {
  background: var(--bg-card);
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.metric-card .metric-value {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.2;
}

.metric-card .metric-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: 500;
}

.metric-card.total .metric-value { color: var(--primary-navy); }
.metric-card.success .metric-value { color: var(--success-green); }
.metric-card.warning .metric-value { color: var(--accent-yellow); }
.metric-card.danger .metric-value { color: var(--danger-red); }
.metric-card.pending .metric-value { color: var(--accent-orange); }

/* ==========================================
   FILTER & SEARCH
   ========================================== */
.filter-card {
  background: var(--bg-card);
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.search-box input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
}

.search-box input:focus {
  border-color: var(--primary-blue);
}

.filter-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.filter-controls select {
  flex: 1;
  min-width: 140px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 13px;
  background-color: var(--bg-card);
}

/* Section Title */
.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.section-title h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-navy);
}

.badge {
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
}

.badge-warning {
  background: #FEF3C7;
  color: #92400E;
}

/* ==========================================
   SURVEY LIST & CARDS
   ========================================== */
.survey-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.survey-item-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.card-top-bar {
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--bg-subtle);
  font-size: 12px;
}

.condition-tag {
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  font-size: 11px;
}

.condition-tag.good { background: #D1FAE5; color: #065F46; }
.condition-tag.warning { background: #FEF3C7; color: #92400E; }
.condition-tag.danger { background: #FEE2E2; color: #991B1B; }
.condition-tag.emergency { background: #7F1D1D; color: #FFFFFF; }

.sync-status-tag {
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.sync-status-tag.synced { color: var(--success-green); }
.sync-status-tag.pending { color: var(--accent-orange); }

.card-main-body {
  padding: 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.survey-info h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 4px;
}

.survey-info p {
  font-size: 12px;
  color: var(--text-muted);
}

.items-sub-list {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sub-item-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-subtle);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
}

.sub-item-name {
  font-weight: 600;
}

.card-actions-bar {
  padding: 8px 14px;
  background-color: var(--bg-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ==========================================
   DYNAMIC MULTI-ITEM INSPECTION FORM
   ========================================== */
.form-card {
  background: var(--bg-card);
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  max-width: 750px;
  margin: 0 auto;
}

.form-header {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.form-header h2 {
  font-size: 20px;
  color: var(--primary-navy);
}

.form-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.form-section-header {
  margin: 24px 0 12px 0;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--primary-blue);
}

.form-section-header h3 {
  font-size: 16px;
  color: var(--primary-navy);
}

.form-section-header p {
  font-size: 12px;
  color: var(--text-muted);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.req {
  color: var(--danger-red);
}

.form-group input[type="text"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  background-color: var(--bg-card);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Individual Item Card in Form */
.inspection-item-entry {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.item-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.item-entry-title {
  font-weight: 700;
  font-size: 14px;
  color: var(--primary-navy);
}

.btn-remove-item {
  background: rgba(220, 38, 38, 0.1);
  color: var(--danger-red);
  border: 1px solid var(--danger-red);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.add-item-btn {
  border: 2px dashed var(--primary-blue);
  color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.04);
  font-weight: 700;
  padding: 12px;
}
.add-item-btn:hover {
  background: rgba(37, 99, 235, 0.1);
}

/* Condition Choice Cards */
.condition-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.condition-option {
  position: relative;
  cursor: pointer;
}

.condition-option input[type="radio"] {
  position: absolute;
  opacity: 0;
}

.condition-content {
  padding: 10px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  background: var(--bg-card);
  transition: all 0.2s ease;
}

.condition-content .icon {
  font-size: 18px;
  display: block;
}

.condition-content .title {
  display: block;
  font-weight: 700;
  font-size: 12px;
  margin-top: 2px;
}

.condition-content .sub {
  display: block;
  font-size: 10px;
  color: var(--text-muted);
}

.condition-option input:checked + .condition-content {
  border-color: var(--primary-blue);
  background-color: rgba(37, 99, 235, 0.05);
}

.condition-option.good input:checked + .condition-content { border-color: var(--success-green); background-color: rgba(5, 150, 105, 0.05); }
.condition-option.warning input:checked + .condition-content { border-color: var(--accent-yellow); background-color: rgba(217, 119, 6, 0.05); }
.condition-option.danger input:checked + .condition-content { border-color: var(--danger-red); background-color: rgba(220, 38, 38, 0.05); }
.condition-option.emergency input:checked + .condition-content { border-color: var(--emergency-darkred); background-color: rgba(153, 27, 27, 0.1); }

/* Camera & Upload */
.camera-uploader {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.photo-preview-container {
  position: relative;
  width: 140px;
  height: 140px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid var(--border-color);
}

.photo-preview-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.btn-remove-photo {
  position: absolute;
  top: 6px;
  right: 6px;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  font-weight: bold;
}

/* GPS */
.gps-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.gps-display {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-subtle);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-family: monospace;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, opacity 0.2s ease;
}

.btn-sm {
  padding: 6px 10px;
  font-size: 12px;
}

.btn-lg {
  padding: 14px 20px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background-color: var(--primary-navy);
  color: white;
}
.btn-primary:hover { background-color: #1E40AF; }

.btn-secondary {
  background-color: var(--primary-blue);
  color: white;
}

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

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover { background: var(--bg-subtle); }

.btn-danger-outline {
  background: transparent;
  border: 1px solid var(--danger-red);
  color: var(--danger-red);
}

/* ==========================================
   SYNC & TAB 3
   ========================================== */
.sync-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: 14px 16px;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
  font-size: 15px;
  color: var(--primary-navy);
}

.card-body {
  padding: 16px;
}

.sync-actions, .export-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.sync-log {
  margin-top: 16px;
  background: #0F172A;
  color: #38BDF8;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  font-size: 12px;
  max-height: 150px;
  overflow-y: auto;
}

.log-entry {
  margin-bottom: 4px;
}

.storage-info-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-color);
  font-size: 13px;
}

/* ==========================================
   MODAL & TOAST
   ========================================== */
.modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 550px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
}

.modal-body {
  padding: 16px;
  overflow-y: auto;
}

.modal-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border-color);
  text-align: right;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  grid-column: 1 / -1;
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 10px;
}

.hidden {
  display: none !important;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: #1E293B;
  color: white;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.3s ease;
  border-left: 4px solid var(--primary-blue);
}

.toast.success { border-left-color: var(--success-green); }
.toast.error { border-left-color: var(--danger-red); }

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