/* =============================================================
   waterroute — nautical passage planner UI
   Vanilla CSS, no build step. Nautical-but-minimal palette.
   ============================================================= */

:root {
  --navy:        #0d2438;
  --navy-2:      #14324a;
  --navy-3:      #1c4160;
  --ink:         #0a1a28;
  --paper:       #f4f7f9;
  --paper-2:     #e7eef3;
  --line:        #d5e0e8;
  --sea:         #1c7ed6;
  --sea-dark:    #1565b0;
  --accent:      #ffb300;   /* buoy amber */
  --src:         #2f9e44;   /* green start pin */
  --dst:         #e03131;   /* red destination pin */
  --marina:      #d6336c;
  --harbour:     #1971c2;
  --muted:       #6c7a86;
  --danger-bg:   #fff4e6;
  --danger-line: #ffa94d;
  --ok:          #2f9e44;

  --card-fastest: #e03131;
  --card-calmest: #1c7ed6;
  --card-econ:    #2f9e44;

  --shadow: 0 2px 10px rgba(9, 26, 40, 0.12);
  --radius: 10px;
  --sidebar-w: 360px;

  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  color: var(--ink);
  background: var(--paper);
  -webkit-text-size-adjust: 100%;
}

/* ---------------- Layout shell ---------------- */
#app {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

#sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  height: 100%;
  overflow-y: auto;
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  border-right: 1px solid var(--line);
  padding: 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scrollbar-width: thin;
}

#mapWrap {
  position: relative;
  flex: 1 1 auto;
  height: 100%;
}

#map { position: absolute; inset: 0; }

/* ---------------- Brand ---------------- */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px 12px;
  background: var(--navy);
  color: #fff;
}
.brand-mark { font-size: 30px; line-height: 1; }
.brand-text h1 { margin: 0; font-size: 20px; letter-spacing: 0.5px; font-weight: 700; }
.tagline { margin: 2px 0 0; font-size: 12px; color: #9fc3dd; }

/* ---------------- Disclaimer ---------------- */
.disclaimer {
  margin: 0 14px;
  padding: 8px 12px;
  background: var(--danger-bg);
  border: 1px solid var(--danger-line);
  border-radius: var(--radius);
  color: #9a5a00;
  font-size: 12px;
  font-weight: 600;
  text-align: center;
}

/* ---------------- Status strip ---------------- */
.status-strip {
  margin: 0 14px;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  border: 1px solid transparent;
}
.status-strip.err  { background: #fff0f0; border-color: #ffc9c9; color: #b02a2a; }
.status-strip.ok   { background: #ebfbee; border-color: #b2f2bb; color: #2b8a3e; }
.status-strip.info { background: #e7f5ff; border-color: #a5d8ff; color: #1864ab; }

/* ---------------- Panels ---------------- */
.panel {
  margin: 0 14px;
  padding: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.panel h2 {
  margin: 0 0 10px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--navy-3);
}
.hint { margin: 0 0 10px; font-size: 12.5px; color: var(--muted); line-height: 1.45; }

.tag {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 5px;
  font-size: 11px;
  color: #fff;
}
.tag-src { background: var(--src); }
.tag-dst { background: var(--dst); }

/* ---------------- Endpoint readout ---------------- */
.endpoint-readout { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.endpoint { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.endpoint-label { width: 44px; color: var(--muted); font-size: 11px; text-transform: uppercase; }
.endpoint-name { font-weight: 600; }
.pin {
  width: 13px; height: 13px; border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  border: 2px solid #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.35);
  flex: 0 0 auto;
}
.pin-src { background: var(--src); }
.pin-dst { background: var(--dst); }

/* ---------------- Buttons ---------------- */
.btn-row { display: flex; gap: 8px; }
.btn-row-stack { flex-direction: column; }
.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, box-shadow .15s, transform .05s;
  flex: 1 1 auto;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary   { background: var(--sea); color: #fff; }
.btn-primary:hover:not(:disabled)   { background: var(--sea-dark); }
.btn-secondary { background: var(--navy-3); color: #fff; }
.btn-secondary:hover:not(:disabled) { background: var(--navy-2); }
.btn-ghost     { background: #fff; color: var(--navy-3); border-color: var(--line); }
.btn-ghost:hover:not(:disabled)     { background: var(--paper-2); }

/* ---------------- Boat form ---------------- */
.grid-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.grid-form label {
  display: flex;
  flex-direction: column;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .4px;
  color: var(--muted);
  gap: 4px;
}
.grid-form input,
.grid-form select,
.scenario-select select {
  font-size: 14px;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  text-transform: none;
}
.grid-form input:focus,
.grid-form select:focus,
.scenario-select select:focus {
  outline: 2px solid var(--sea);
  outline-offset: 0;
  border-color: var(--sea);
}
.scenario-select {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .4px;
  color: var(--muted);
}

/* ---------------- Result metrics ---------------- */
.result-grid { display: flex; gap: 8px; }
.metric {
  flex: 1;
  text-align: center;
  padding: 10px 4px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.metric-val { display: block; font-size: 20px; font-weight: 700; color: var(--navy); }
.metric-lbl { display: block; font-size: 10.5px; color: var(--muted); text-transform: uppercase; margin-top: 2px; }
.reason {
  margin: 10px 0 0;
  font-size: 13px;
  color: #b02a2a;
  background: #fff0f0;
  border: 1px solid #ffc9c9;
  border-radius: 8px;
  padding: 8px 10px;
}

/* ---------------- Route-option cards ---------------- */
.cards { display: flex; flex-direction: column; gap: 10px; }
.card {
  border: 1px solid var(--line);
  border-left: 5px solid var(--muted);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  cursor: pointer;
  transition: box-shadow .15s, opacity .15s;
}
.card:hover { box-shadow: var(--shadow); }
.card.off { opacity: .45; }
.card.dominated { background: repeating-linear-gradient(45deg, #fff, #fff 8px, #f5f7f9 8px, #f5f7f9 16px); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.card-title { font-weight: 700; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.card-swatch { width: 12px; height: 12px; border-radius: 3px; flex: 0 0 auto; }
.card-toggle { font-size: 11px; color: var(--muted); }
.card-metrics {
  display: flex; flex-wrap: wrap; gap: 6px 14px;
  margin-top: 8px; font-size: 12.5px; color: var(--navy-2);
}
.card-metrics b { color: var(--navy); }
.wins { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 8px; }
.win-badge {
  font-size: 10.5px; font-weight: 700; text-transform: uppercase;
  padding: 2px 7px; border-radius: 20px;
  background: #fff3bf; color: #8a6d00; border: 1px solid #ffe066;
}
.dominated-note { font-size: 11px; color: var(--muted); margin-top: 6px; font-style: italic; }

/* ---------------- Legend ---------------- */
.legend { display: flex; flex-direction: column; gap: 8px; }
.legend-swatches { flex-direction: row; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.chk { display: flex; align-items: center; gap: 8px; font-size: 13px; cursor: pointer; }
.chk input { width: 16px; height: 16px; accent-color: var(--sea); }
.sw { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--navy-2); }
.dot { width: 14px; height: 14px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 11px; }
.dot-marina  { background: var(--marina); }
.dot-harbour { background: var(--harbour); }
.dot-bridge, .dot-lock { background: none; border-radius: 0; }

/* ---------------- Side footer ---------------- */
.side-footer { margin: 4px 14px 0; font-size: 11px; color: var(--muted); text-align: center; }

/* ---------------- Loading overlay ---------------- */
.loading {
  position: absolute;
  inset: 0;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(13, 36, 56, 0.35);
  backdrop-filter: blur(1px);
  color: #fff;
  font-weight: 600;
  letter-spacing: .5px;
}
.spinner {
  width: 44px; height: 44px;
  border: 4px solid rgba(255,255,255,.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- Map marker icons (divIcon) ---------------- */
.wr-pin {
  width: 18px; height: 18px;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.4);
}
.wr-pin.src { background: var(--src); }
.wr-pin.dst { background: var(--dst); }

.wr-dot {
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.4);
}

.wr-emoji {
  font-size: 18px;
  line-height: 1;
  text-shadow: 0 1px 2px rgba(255,255,255,.9), 0 0 3px rgba(255,255,255,.9);
  text-align: center;
}

/* ---------------- Popups ---------------- */
.wr-popup h3 { margin: 0 0 4px; font-size: 14px; color: var(--navy); }
.wr-popup .kind { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
.wr-popup dl { margin: 6px 0 0; display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; font-size: 12.5px; }
.wr-popup dt { color: var(--muted); }
.wr-popup dd { margin: 0; font-weight: 600; }
.wr-vhf {
  display: inline-block; margin-top: 6px;
  background: var(--accent); color: #4a3400;
  font-weight: 700; font-size: 12.5px;
  padding: 3px 9px; border-radius: 6px;
}

/* ---------------- Mobile panel toggle ---------------- */
.panel-toggle {
  display: none;
  position: absolute;
  top: 10px; left: 10px;
  z-index: 800;
  width: 42px; height: 42px;
  border: none; border-radius: 10px;
  background: var(--navy); color: #fff;
  font-size: 20px; cursor: pointer;
  box-shadow: var(--shadow);
}

/* ---------------- Responsive ---------------- */
@media (max-width: 820px) {
  #app { flex-direction: column; }
  #sidebar {
    position: absolute;
    z-index: 1000;
    width: 88%;
    max-width: 360px;
    min-width: 0;
    height: 100%;
    box-shadow: 4px 0 20px rgba(0,0,0,.25);
    transform: translateX(-102%);
    transition: transform .25s ease;
  }
  #sidebar.open { transform: translateX(0); }
  #mapWrap { flex: 1 1 auto; height: 100%; width: 100%; }
  .panel-toggle { display: block; }
}

/* Buoy popup extras */
.pop-sub { color: #5a6b7a; font-size: 12px; margin: 2px 0 4px; text-transform: capitalize; }
.pop-hazard { color: #c0392b; font-weight: 600; margin-top: 4px; }

/* Utility: actually hide elements toggled with .hidden (was missing) */
.hidden { display: none !important; }