:root {
  --green: #2D6A2E;
  --green-light: #4CAF50;
  --green-pale: #e8f5e9;
  --bg: #f8f9fa;
  --card: #ffffff;
  --border: #dee2e6;
  --text: #212529;
  --text-muted: #6c757d;
  --danger: #dc3545;
  --warning: #fd7e14;
  --warning-pale: #fff3cd;
  --info: #0dcaf0;
  --sidebar-w: 220px;
  --header-h: 60px;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ── */
#app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
#sidebar {
  width: var(--sidebar-w);
  background: var(--green);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform .25s ease;
}

#sidebar-logo {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255,255,255,.15);
}

#sidebar-logo h1 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .5px;
}

#sidebar-logo p {
  font-size: 11px;
  opacity: .75;
  margin-top: 2px;
}

#sidebar nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

#sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: rgba(255,255,255,.85);
  font-size: 13.5px;
  border-left: 3px solid transparent;
  transition: background .15s, color .15s, border-color .15s;
}

#sidebar nav a:hover {
  background: rgba(255,255,255,.12);
  color: #fff;
  text-decoration: none;
}

#sidebar nav a.active {
  background: rgba(255,255,255,.18);
  color: #fff;
  border-left-color: #fff;
  font-weight: 600;
}

#sidebar nav a .nav-icon { font-size: 16px; width: 20px; text-align: center; }

#sidebar-footer {
  padding: 14px 20px;
  border-top: 1px solid rgba(255,255,255,.15);
  font-size: 12px;
  opacity: .7;
}

#btn-logout {
  background: rgba(255,255,255,.15);
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  margin-top: 6px;
  width: 100%;
  text-align: left;
  transition: background .15s;
}

#btn-logout:hover { background: rgba(255,255,255,.25); }

/* ── Main ── */
#main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

#top-bar {
  height: var(--header-h);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

#top-bar-title { font-size: 16px; font-weight: 600; }

#hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  padding: 4px;
  color: var(--text);
}

#page-content {
  flex: 1;
  padding: 24px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

/* ── Cards / Sections ── */
.section { margin-bottom: 28px; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  border: 1px solid var(--border);
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--green);
}

/* ── Stats ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  border-left: 4px solid var(--green);
  border: 1px solid var(--border);
  border-left: 4px solid var(--green);
}

.stat-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--green); line-height: 1.2; margin-top: 4px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s, box-shadow .15s;
  white-space: nowrap;
}

.btn-primary   { background: var(--green); color: #fff; border-color: var(--green); }
.btn-primary:hover { background: #235924; }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg); }
.btn-danger    { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #b02a37; }
.btn-sm        { padding: 5px 10px; font-size: 12px; }
.btn-icon      { padding: 6px 8px; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; padding: 9px 12px; background: var(--bg); font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--text-muted); border-bottom: 2px solid var(--border); white-space: nowrap; }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #f3f8f3; }

/* ── Flight type badges ── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
}

.badge-agri       { background: #d1e7dd; color: #0a3622; }
.badge-thermo     { background: #ffe0b2; color: #7a3d00; }
.badge-sar        { background: #f8d7da; color: #58151c; }
.badge-bos        { background: #cfe2ff; color: #0a3069; }
.badge-recon      { background: #e2d9f3; color: #3d2171; }
.badge-viticulture{ background: #c6ddf0; color: #0c2d4e; }
.badge-other      { background: #e2e3e5; color: #41464b; }

/* ── Auto-Tags ── */
.tag-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .2px;
  margin-left: 4px;
  vertical-align: middle;
}
.tag-nachtflug { background: #1a237e; color: #fff; }
.tag-hoehe_100 { background: #bf360c; color: #fff; }
.tag-langflug  { background: #00695c; color: #fff; }

/* ── Forms ── */
.form-section {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  overflow: hidden;
}

.form-section-header {
  padding: 12px 20px;
  background: var(--green);
  color: #fff;
  font-weight: 600;
  font-size: 13.5px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.form-section-header .toggle-icon { margin-left: auto; transition: transform .2s; }
.form-section-header.collapsed .toggle-icon { transform: rotate(-90deg); }

.form-section-body { padding: 20px; }
.form-section-body.hidden { display: none; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.form-grid.cols-1 { grid-template-columns: 1fr; }
.span-2 { grid-column: span 2; }

.form-group { display: flex; flex-direction: column; gap: 5px; }

label { font-size: 12.5px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .3px; }

input[type="text"],
input[type="date"],
input[type="time"],
input[type="number"],
input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  font-family: inherit;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--green-light);
  box-shadow: 0 0 0 3px rgba(76,175,80,.15);
}

input.missing, select.missing, textarea.missing {
  border-color: #ffc107;
  background: #fffbec;
}

textarea { resize: vertical; min-height: 80px; }

.checkbox-group { display: flex; flex-direction: column; gap: 10px; }
.checkbox-item { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.checkbox-item input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--green);
  cursor: pointer;
}

/* ── Zones dynamic list ── */
.zone-list { display: flex; flex-direction: column; gap: 12px; }

.zone-entry {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
  background: var(--bg);
  position: relative;
}

.zone-entry .btn-remove-zone {
  position: absolute;
  top: 10px;
  right: 10px;
}

/* ── Alerts ── */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 13.5px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.alert-warning { background: var(--warning-pale); color: #664d03; border: 1px solid #ffc107; }
.alert-danger   { background: #f8d7da; color: #58151c; border: 1px solid #f1aeb5; }
.alert-success  { background: var(--green-pale); color: #0a3622; border: 1px solid #a3cfbb; }
.alert-info     { background: #cff4fc; color: #055160; border: 1px solid #9eeaf9; }
.alert-orange   { background: #fff3e0; color: #7a3d00; border: 1px solid #ffcc80; }

/* ── Collapsible flight cards ── */
.flight-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.flight-card-header {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
  flex-wrap: wrap;
}

.flight-card-header:hover { background: #f3f8f3; }

.flight-card-date { font-weight: 700; min-width: 100px; color: var(--green); }
.flight-card-meta { color: var(--text-muted); font-size: 13px; flex: 1; }
.flight-card-actions { display: flex; gap: 6px; margin-left: auto; }

.flight-card-body {
  padding: 16px;
  border-top: 1px solid var(--border);
  background: #fafff9;
  display: none;
}

.flight-card-body.open { display: block; }

.flight-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px 20px;
  font-size: 13.5px;
}

.flight-detail-item label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .3px;
  margin-bottom: 2px;
}

.flight-detail-item span { color: var(--text); }

/* ── Filter bar ── */
.filter-bar {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.filter-bar .form-group { min-width: 140px; }
.filter-bar label { font-size: 11.5px; }

/* ── Import ── */
.dropzone {
  border: 2px dashed var(--green-light);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: background .15s, border-color .15s;
  background: var(--green-pale);
}

.dropzone:hover, .dropzone.drag-over {
  background: #c8e6c9;
  border-color: var(--green);
}

.dropzone p { color: var(--green); font-size: 15px; font-weight: 500; margin-bottom: 6px; }
.dropzone small { color: var(--text-muted); }

/* ── Login page ── */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green);
}

.login-card {
  background: #fff;
  border-radius: 12px;
  padding: 36px 40px;
  width: 360px;
  max-width: calc(100vw - 32px);
  box-shadow: 0 8px 32px rgba(0,0,0,.2);
}

.login-logo { text-align: center; margin-bottom: 24px; }
.login-logo h1 { color: var(--green); font-size: 26px; font-weight: 800; }
.login-logo p { color: var(--text-muted); font-size: 13px; margin-top: 4px; }

.login-card .form-group { margin-bottom: 16px; }
.login-card label { font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 4px; display: block; }
.login-card input { font-size: 14px; }
.login-card .btn-primary { width: 100%; justify-content: center; padding: 10px; font-size: 15px; margin-top: 8px; }

#login-error { display: none; }

/* ── Pagination ── */
.pagination {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  margin-top: 14px;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

.pagination button {
  padding: 5px 10px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  font-size: 13px;
}

.pagination button:hover { background: var(--bg); }
.pagination button:disabled { opacity: .4; cursor: default; }
.pagination .page-info { padding: 5px 8px; }

/* ── Utility ── */
.text-muted { color: var(--text-muted); }
.text-green { color: var(--green); }
.text-danger { color: var(--danger); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.hidden { display: none !important; }
.w-100 { width: 100%; }
.spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ── */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 18px;
  border-radius: 8px;
  color: #fff;
  font-size: 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
  animation: slideIn .2s ease;
  max-width: 320px;
}

.toast-success { background: var(--green); }
.toast-error   { background: var(--danger); }
.toast-info    { background: #0d6efd; }

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

/* ── Responsive ── */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid.cols-3 { grid-template-columns: 1fr; }
  .span-2 { grid-column: span 1; }
  .flight-detail-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  :root { --sidebar-w: 0px; }

  #sidebar {
    transform: translateX(-220px);
    width: 220px;
  }

  #sidebar.open {
    transform: translateX(0);
  }

  #main-content { margin-left: 0; }
  #hamburger { display: block; }
  #page-content { padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-value { font-size: 22px; }
  .filter-bar { gap: 8px; }
  .filter-bar .form-group { min-width: 120px; }
  .flight-detail-grid { grid-template-columns: 1fr; }
}

#sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 99;
}

#sidebar-overlay.active { display: block; }