/* ===== CSS Custom Properties (Theme) ===== */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-danger: #dc2626;
  --color-warning: #f59e0b;
  --color-success: #16a34a;
  --color-bg: #f0f2f5;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;
  --nav-width: 220px;
  --nav-height-mobile: 64px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
}

/* ===== App Shell ===== */
#shell {
  display: flex;
  min-height: 100vh;
}

#shell.no-nav #main-nav {
  display: none;
}

#shell.no-nav #app {
  margin-left: 0;
  width: 100%;
}

/* ===== Sidebar Navigation (Desktop) ===== */
#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--nav-width);
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: 1rem 0;
  overflow-y: auto;
  z-index: 100;
}

#app {
  margin-left: var(--nav-width);
  flex: 1;
  padding: 1.5rem;
  width: calc(100% - var(--nav-width));
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.nav-link.active {
  color: var(--color-primary);
  background: #eff6ff;
  font-weight: 600;
}

.nav-icon {
  font-size: 1.2rem;
  width: 1.5rem;
  text-align: center;
}

.nav-logout {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
}

/* ===== Mobile: Bottom Navigation ===== */
@media (max-width: 768px) {
  #main-nav {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height-mobile);
    flex-direction: row;
    border-right: none;
    border-top: 1px solid var(--color-border);
    padding: 0;
    overflow-x: auto;
    overflow-y: hidden;
  }

  #app {
    margin-left: 0;
    width: 100%;
    padding: 1rem;
    padding-bottom: calc(var(--nav-height-mobile) + 1rem);
  }

  .nav-link {
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.7rem;
    min-width: 0;
    flex: 1;
    justify-content: center;
    text-align: center;
  }

  .nav-icon {
    font-size: 1.3rem;
  }

  .nav-logout {
    margin-top: 0;
    border-top: none;
    border-left: 1px solid var(--color-border);
  }
}

/* ===== Login Page ===== */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 80vh;
}

.login-card {
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 400px;
}

.login-card h1 {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

/* ===== Forms ===== */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
}

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

.btn-danger:hover {
  background: #b91c1c;
}

.btn-secondary {
  background: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: #d1d5db;
}

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

/* ===== Cards ===== */
.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

/* ===== Page Header ===== */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-header h2 {
  font-size: 1.4rem;
}

/* ===== Tables ===== */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

th.sortable {
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

th.sortable:hover {
  color: var(--color-text);
}

.sort-icon {
  font-size: 0.65rem;
  margin-left: 0.2rem;
  opacity: 0.5;
}

th.sortable:hover .sort-icon {
  opacity: 1;
}

.table-filter {
  padding: 0.5rem 0 0.75rem;
}

.table-filter input {
  width: 100%;
  max-width: 400px;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  background: var(--color-bg);
  color: var(--color-text);
}

/* ===== Collapsible cards ===== */
.card-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}
.card-header-row h3 { margin: 0; }
.card-collapsible-body { margin-top: 1rem; }
.card-collapsed .card-collapsible-body { display: none; }
.card-chevron {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  display: inline-block;
  transition: transform 0.15s;
  margin-left: 0.25rem;
}
.card-collapsed .card-chevron { transform: rotate(180deg); }

/* ===== Tabs ===== */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 1rem;
}
.tab-btn {
  padding: 0.5rem 1.25rem;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s;
}
.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ===== Badges ===== */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-info    { background: #dbeafe; color: #1e40af; }

/* ===== Error / Messages ===== */
.error-message {
  color: var(--color-danger);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

/* ===== Page loading spinner ===== */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.page-loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 5rem 1rem;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}

.error-page {
  text-align: center;
  padding: 3rem 1rem;
}

/* ===== Utilities ===== */
.text-secondary { color: var(--color-text-secondary); }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.flex-gap { display: flex; gap: 0.5rem; flex-wrap: wrap; }

/* ===== Modal ===== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 200;
  padding: 1rem;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.5rem;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.modal-header h3 {
  font-size: 1.15rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 0;
  line-height: 1;
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

/* ===== Fuel Quick-Add (mobile optimized) ===== */
.fuel-quick-add {
  border-left: 4px solid var(--color-primary);
}

.fuel-quick-add h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

/* ===== Dashboard ===== */
.db-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.db-stat-link {
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.15s;
}

.db-stat-link:hover {
  box-shadow: 0 0 0 2px var(--color-primary);
}

.stat-card {
  text-align: center;
  padding: 1.25rem 1rem;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  margin-top: 0.35rem;
}

.db-month-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.65rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.db-month-sep {
  color: var(--color-border);
  margin: 0 0.25rem;
}

.db-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: start;
}

/* ── Cistern bar ── */
.cistern-bar-wrap { display: flex; flex-direction: column; gap: 0.4rem; }
.cistern-bar-track {
  height: 16px;
  background: var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}
.cistern-bar-fill {
  height: 100%;
  border-radius: 8px;
  transition: width 0.3s ease;
}
.cistern-bar-label { font-size: 0.85rem; color: var(--color-text-secondary); }

/* ── Activity feed ── */
.activity-list { display: flex; flex-direction: column; gap: 0.6rem; }
.activity-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--color-border);
}
.activity-item:last-child { border-bottom: none; }
.activity-icon { font-size: 1.1rem; flex-shrink: 0; }
.activity-body { flex: 1; display: flex; flex-direction: column; gap: 0.1rem; font-size: 0.9rem; }
.activity-when { font-size: 0.8rem; flex-shrink: 0; }

/* ── Stats page ── */
.stat-sub {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  margin-top: 0.2rem;
}

.stats-bar-chart {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.stats-bar-row {
  display: grid;
  grid-template-columns: 3.5rem 1fr 4rem;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
}

.stats-bar-label {
  text-align: right;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.stats-bar-track {
  height: 14px;
  background: var(--color-border);
  border-radius: 7px;
  overflow: hidden;
}

.stats-bar-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 7px;
  transition: width 0.3s ease;
}

.stats-bar-value {
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  white-space: nowrap;
}

/* ── Equipment category/type/tile layout ── */
.eq-category {
  margin-bottom: 1.5rem;
}
.eq-category-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-primary);
}
.eq-category-name {
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
}
.eq-type-group {
  margin-bottom: 1rem;
  padding-left: 0.5rem;
}
.eq-type-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.4rem;
}
.eq-tile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  margin-bottom: 0.35rem;
  flex-wrap: wrap;
  background: var(--color-surface);
}
.eq-tile-code {
  font-family: monospace;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary);
  min-width: 2.2rem;
}
.eq-tile-info {
  flex: 1;
  min-width: 80px;
  font-size: 0.92rem;
}
.eq-tile-actions {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}
/* Category manager modal list */
.cat-manager-list { display: flex; flex-direction: column; gap: 1rem; }
.cat-manager-item { border: 1px solid var(--color-border); border-radius: 8px; padding: 0.75rem; }
.cat-manager-row { display: flex; align-items: center; gap: 0.5rem; }
.cat-manager-row span { flex: 1; font-weight: 600; }
.cat-type-list { margin-top: 0.5rem; padding-left: 1rem; display: flex; flex-direction: column; gap: 0.3rem; }
.cat-type-row { display: flex; align-items: center; gap: 0.4rem; font-size: 0.9rem; }
.cat-type-row span { flex: 1; }

.badge-secondary { background: #e2e8f0; color: #475569; }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.95rem;
}

/* External fuel toggle card */
.external-fuel-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.external-fuel-toggle:has(input:checked) {
  border-color: var(--color-warning);
  background: #fffbeb;
}
.external-fuel-toggle input[type="checkbox"] {
  flex-shrink: 0;
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--color-warning);
  cursor: pointer;
}
.external-fuel-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.external-fuel-title {
  font-weight: 600;
  font-size: 0.92rem;
}
.external-fuel-desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* ── Operatore page ── */
.op-fuel-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

@media (max-width: 900px) {
  .db-stats   { grid-template-columns: repeat(2, 1fr); }
  .db-grid-2  { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .db-stats   { grid-template-columns: repeat(2, 1fr); }
  .stat-number { font-size: 1.5rem; }
}

/* keep old .dashboard-grid for any legacy reference */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

/* ===== Document sections in vehicle modal ===== */
.doc-section {
  border-top: 1px solid var(--color-border);
  padding: 0.75rem 0;
}
.doc-section:first-child {
  border-top: none;
  padding-top: 0;
}
.doc-section h4 {
  margin: 0 0 0.5rem 0;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.doc-item {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 0.25rem;
}

/* ===== Cistern Tank Gauge ===== */
.cistern-layout {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.cistern-gauge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.cistern-tank {
  width: 100px;
  height: 200px;
  border: 3px solid #334155;
  border-radius: 8px 8px 5px 5px;
  position: relative;
  overflow: hidden;
  background: #f1f5f9;
}

.cistern-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, var(--color-primary-dark), #60a5fa);
  transition: height 0.6s ease;
}

.cistern-fill.level-warning {
  background: linear-gradient(to top, #b45309, #fbbf24);
}

.cistern-fill.level-danger {
  background: linear-gradient(to top, var(--color-danger), #f87171);
}

.cistern-pct-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-weight: 700;
  font-size: 1rem;
  color: #1e293b;
  text-shadow: 0 0 6px rgba(255, 255, 255, 0.9);
  z-index: 1;
}

.cistern-tank-label {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.cistern-stats {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 0.25rem;
}

.cistern-stats .stat-row {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.cistern-stats .stat-row strong {
  color: var(--color-text);
}

.btn-link {
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0 0.25rem;
  text-decoration: underline;
}

/* ===== Vehicle Detail Page ===== */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
}

.detail-grid > div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.detail-grid > div span {
  font-size: 0.8rem;
}

.detail-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.link-primary {
  color: var(--color-primary);
  text-decoration: none;
}

.link-primary:hover {
  text-decoration: underline;
}

/* ===== Modal footer (alias for modal-actions) ===== */
.modal-footer {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

/* ===== Insurance detail list ===== */
.insurance-dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
  font-size: 0.9rem;
}
.insurance-dl dt { color: var(--color-text-secondary); }
.insurance-dl dd { font-weight: 500; }

/* ===== Vehicle Detail: info + photo layout ===== */
.vehicle-detail-layout {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.vehicle-detail-info {
  flex: 1;
  min-width: 260px;
}

.vehicle-photo-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.vehicle-photo {
  width: 200px;
  height: 150px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.vehicle-photo-placeholder {
  width: 200px;
  height: 150px;
  border-radius: var(--radius);
  border: 2px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  font-size: 0.85rem;
}

.vehicle-photo-form {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: stretch;
  width: 200px;
}

.vehicle-photo-form input[type="file"] {
  font-size: 0.8rem;
  width: 100%;
}

@media (max-width: 600px) {
  .vehicle-detail-layout {
    flex-direction: column-reverse;
  }
  .vehicle-photo-wrap {
    width: 100%;
    flex-direction: row;
    align-items: flex-start;
  }
  .vehicle-photo, .vehicle-photo-placeholder {
    width: 120px;
    height: 90px;
  }
  .vehicle-photo-form {
    width: auto;
  }
}