:root {
  --bg: #0f1520;
  --panel: #171f2e;
  --panel2: #1d2738;
  --border: #2a3650;
  --text: #dde6f5;
  --muted: #8b9ab5;
  --accent: #3b82f6;
  --ok: #22c55e;
  --warn: #f59e0b;
  --err: #ef4444;
}

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

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

/* ---------- Login ---------- */
.overlay {
  position: fixed; inset: 0;
  background: rgba(8, 12, 20, .85);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.login-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px;
  width: 360px;
  display: flex; flex-direction: column; gap: 12px;
  text-align: center;
}
.login-box h1 { font-size: 24px; }
.login-box input {
  background: var(--panel2); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 12px; color: var(--text);
}

/* ---------- Layout ---------- */
header {
  display: flex; align-items: center; gap: 18px;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 17px; white-space: nowrap; }
nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
nav button {
  background: none; border: none; color: var(--muted);
  padding: 8px 14px; cursor: pointer; border-radius: 8px; font-size: 14px;
}
nav button:hover { background: var(--panel2); color: var(--text); }
nav button.active { background: var(--accent); color: #fff; }
.userbox { display: flex; align-items: center; gap: 10px; color: var(--muted); }

main { padding: 20px; max-width: 1500px; margin: 0 auto; }
.tab { display: none; }
.tab.active { display: block; }
h2 { margin-bottom: 14px; font-size: 19px; }
h3 { margin: 20px 0 10px; }
.muted { color: var(--muted); margin-bottom: 12px; }

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px;
}
.card .value { font-size: 26px; font-weight: 700; margin-top: 4px; }
.card .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }

.station-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}
.station-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px;
}
.station-card .name { font-weight: 700; display: flex; justify-content: space-between; align-items: center; }
.station-card .meta { color: var(--muted); font-size: 12px; margin-top: 6px; line-height: 1.6; }

/* ---------- Tables ---------- */
.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.table-wrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; min-width: 700px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .4px; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--panel2); }

/* ---------- Pills / status ---------- */
.pill {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
}
.pill.ok { background: rgba(34,197,94,.15); color: var(--ok); }
.pill.err { background: rgba(239,68,68,.15); color: var(--err); }
.pill.warn { background: rgba(245,158,11,.15); color: var(--warn); }
.pill.info { background: rgba(59,130,246,.15); color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 16px; cursor: pointer; font-size: 14px;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.danger { color: var(--err); }
.btn.small { padding: 4px 10px; font-size: 12px; }

/* ---------- Events ---------- */
.events { display: flex; flex-direction: column; gap: 6px; }
.event {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 12px;
  display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap;
}
.event .ts { color: var(--muted); font-size: 12px; font-family: Consolas, monospace; }

.code {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px; overflow-x: auto; font-family: Consolas, monospace; font-size: 12px;
  line-height: 1.6;
}

/* ---------- Ρυθμίσεις ---------- */
.settings-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 1020px;
}
.settings-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px 18px;
}
.settings-card h3 {
  margin: 0 0 14px;
  font-size: 15px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px 18px;
  align-items: end;
}
.settings-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}
.settings-grid label.full { grid-column: 1 / -1; }
.settings-grid label.chk {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text);
  min-height: 37px;
}
.settings-grid input {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--text);
  font-size: 14px;
  width: 100%;
}
.settings-grid input[type=checkbox] {
  width: 18px;
  height: 18px;
  padding: 0;
  flex: 0 0 auto;
}

/* ---------- Χάρτης ---------- */
#map {
  height: 72vh;
  min-height: 420px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
}
.leaflet-popup-content { color: #1a2333; font-size: 13px; line-height: 1.5; }

/* ---------- Modal ---------- */
.modal {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 24px; width: 640px; max-width: 95vw; max-height: 90vh; overflow-y: auto;
}
.modal-body { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 18px 0; }
.modal-body label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.modal-body label.full { grid-column: 1 / -1; }
.modal-body input, .modal-body select {
  background: var(--panel2); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; color: var(--text); font-size: 14px;
}
.modal-body input[type=checkbox] { width: 18px; height: 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }
.error { color: var(--err); min-height: 18px; margin-top: 8px; font-size: 13px; }

/* ---------- Κινητά (PWA) ---------- */
@media (max-width: 700px) {
  body { font-size: 13px; }

  /* Header: μαρκίζα σταθερή πάνω, tabs σε οριζόντια κύλιση με μεγάλα targets */
  header {
    position: sticky; top: 0; z-index: 50;
    padding: 8px 10px calc(0px + env(safe-area-inset-top, 0px) * 0) 10px;
    padding-top: calc(8px + env(safe-area-inset-top, 0px));
    gap: 8px;
  }
  .brand { font-size: 15px; }
  .brand #buildInfo { display: none; }
  nav {
    flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch;
    order: 3; flex-basis: 100%; scrollbar-width: none; gap: 2px; padding-bottom: 2px;
  }
  nav::-webkit-scrollbar { display: none; }
  nav button { padding: 10px 12px; font-size: 13px; white-space: nowrap; flex: 0 0 auto; }
  .userbox { margin-left: auto; gap: 6px; font-size: 12px; }
  .userbox .btn { padding: 6px 10px; font-size: 12px; }

  main { padding: 10px; padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px)); }
  h2 { font-size: 17px; }

  /* Κάρτες: 2 ανά σειρά στο κινητό */
  .cards { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .card { padding: 10px 12px; }
  .card .value { font-size: 20px; }
  .card .label { font-size: 10px; }
  .station-grid { grid-template-columns: 1fr; gap: 8px; }

  /* Πίνακες: κύλιση μέσα στο πλαίσιο, πιο πυκνοί */
  .toolbar { flex-wrap: wrap; gap: 8px; }
  table { min-width: 560px; }
  th, td { padding: 7px 8px; font-size: 12.5px; }

  /* Ρυθμίσεις & modals: μία στήλη, σχεδόν πλήρης οθόνη */
  .settings-grid { grid-template-columns: 1fr; }
  .modal { width: 100%; max-width: 100vw; max-height: 96vh; padding: 16px; border-radius: 12px 12px 0 0; }
  .modal-body { grid-template-columns: 1fr; }

  /* Χάρτης: λίγο χαμηλότερος ώστε να χωρά το υπόμνημα */
  #map { height: 58vh; min-height: 320px; }

  .login-box { width: 92vw; padding: 24px; }

  /* Μεγαλύτερα κουμπιά αφής παντού */
  .btn { padding: 10px 14px; }
  .btn.small { padding: 6px 10px; font-size: 12px; }
}

/* Πολύ στενές οθόνες (π.χ. παλιά iPhone SE): κάρτες μία-μία */
@media (max-width: 340px) {
  .cards { grid-template-columns: 1fr; }
}