/* ---------------------------------------------------------------------------
 * SNAP-1 — sonar tactical display
 * Near-black hull, lit navy-blue instrumentation. Bordered panels, corner brackets,
 * monospace throughout. Bright marks on black — not a dark-themed web page.
 * ------------------------------------------------------------------------- */

:root {
  --bg:        #020813;   /* hull black, navy cast */
  --panel:     #061224;   /* panel body */
  --panel-2:   #0a1a30;   /* inset / field */
  --panel-3:   #0e233f;   /* hover */
  --header:    rgba(77, 143, 224, 0.10);

  --line:      #1b3557;   /* panel border, dim */
  --line-2:    #2a5183;   /* lit edge */

  --text:      #cbdcf5;   /* primary readout */
  --text-2:    #7d9bc4;   /* secondary */
  --text-3:    #4a6489;   /* labels / tertiary */

  --accent:    #4d8fe0;   /* navy instrument light */
  --accent-2:  #2f6bb5;   /* second rank */
  --accent-bg: rgba(77, 143, 224, 0.10);

  --alert:     #e05a4a;
  --warn:      #d99a2b;
  --ok:        #3fb37a;

  /* Chart: the sea stays true black regardless of the hull tint. */
  --sea:       #000000;
  --coast:     #16334f;
  --contour:   #14384f;   /* altitude lines, just under the coastline */

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "DejaVu Sans Mono", monospace;

  /* Gentle tint only. Deliberately NOT crushing terrain to black — that
     forced a cascade of workarounds (blown-out labels, white water, bright
     river veins) and each fix needed another. */
  --map-filter: grayscale(1) sepia(1) hue-rotate(178deg) saturate(1.9) brightness(0.78) contrast(1.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  overscroll-behavior: none;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #020813; }

#app { display: flex; height: 100%; }

/* ---------------------------------------------------------------- panel --- */

#panel {
  width: 340px;
  flex: 0 0 340px;
  background: var(--bg);
  border-right: 1px solid var(--line);
  padding: 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 9px;
  position: relative;
  z-index: 2;
}

#panel::-webkit-scrollbar { width: 9px; }
#panel::-webkit-scrollbar-track { background: var(--bg); }
#panel::-webkit-scrollbar-thumb { background: var(--line); border: 2px solid var(--bg); }

/* --------------------------------------------------------------- header --- */

#titlebar { display: flex; flex-direction: column; gap: 6px; }

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--line-2);
  background: var(--header);
  padding: 7px 10px;
}

.brand-mark {
  width: 4px;
  height: 22px;
  background: var(--accent);
  flex: 0 0 auto;
}

.brand h1 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2.4px;
  color: var(--accent);
  text-transform: uppercase;
}

.brand-sub {
  margin: 0;
  font-size: 9.5px;
  color: var(--text-3);
  letter-spacing: 1.1px;
  text-transform: uppercase;
}

.ao-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 10px;
  border: 1px solid var(--line);
  font-size: 9.5px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text-3);
}
.ao-strip strong { color: var(--accent); font-weight: 600; letter-spacing: 1.8px; }

/* ---------------------------------------------------- instrument panels --- */

.group, .results:not([hidden]) {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0 0 9px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Corner brackets, top-left and bottom-right. */
.group::before, .group::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border: 1px solid var(--accent);
  pointer-events: none;
}
.group::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.group::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.group > *:not(.group-label) { margin: 0 9px; }

.group-label {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--header);
  border-bottom: 1px solid var(--line);
  padding: 5px 9px;
  margin: 0 0 1px;
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--accent);
}
.group-label::before {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--accent);
  flex: 0 0 auto;
}

/* --------------------------------------------------------------- inputs --- */

textarea, input[type="number"] {
  /* No width:100% — these are stretch children of a flex column that also
     carries side margins, so 100% overflows the panel by the margin width. */
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 7px 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.5;
  resize: none;
}

textarea::placeholder { color: var(--text-3); }

textarea:focus, input:focus, .gauge:focus-visible {
  outline: none;
  border-color: var(--accent);
  background: var(--panel-3);
}

input[type="number"] { -moz-appearance: textfield; appearance: textfield; }
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.hint {
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: .6px;
  text-transform: uppercase;
}

/* ------------------------------------------------- radios & checkboxes --- */

.opts { display: flex; flex-direction: column; gap: 0; }

.opts label, label.check {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 7px;
  color: var(--text-2);
  cursor: pointer;
  user-select: none;
  font-size: 12px;
  letter-spacing: .3px;
  border: 1px solid transparent;
}
.opts label:hover, label.check:hover { background: var(--panel-3); color: var(--text); }

input[type="radio"], input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0; height: 0; margin: 0;
  pointer-events: none;
}

.opts label span, label.check span { display: flex; align-items: center; gap: 9px; }

.opts label span::before, label.check span::before {
  content: "";
  width: 10px; height: 10px;
  border: 1px solid var(--line-2);
  flex: 0 0 auto;
}
.opts label input:checked + span::before,
label.check input:checked + span::before {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: inset 0 0 0 2px var(--panel);
}

.opts label:has(input:checked), label.check:has(input:checked) {
  color: var(--accent);
  border-color: var(--line);
  background: var(--accent-bg);
}
input:focus-visible + span::before { border-color: var(--accent); }

/* --------------------------------------------------------------- radius --- */

.radius-row { display: flex; align-items: stretch; gap: 5px; }

.radius-value {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--panel-2);
  border: 1px solid var(--line);
  padding-right: 9px;
}
.radius-value input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  text-align: right;
  padding-right: 6px;
  font-size: 14px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.radius-value input:focus { background: transparent; }
.radius-value:focus-within { border-color: var(--accent); }
.unit { color: var(--text-3); font-size: 10px; letter-spacing: 1px; text-transform: uppercase; }

.step {
  width: 32px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text-2);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
}
.step:hover, .step:active { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); }

/* Segmented bar meter, as on the reference displays. */
.gauge {
  position: relative;
  height: 16px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  overflow: hidden;
  cursor: ew-resize;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
.gauge-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 50%;
  background:
    repeating-linear-gradient(to right,
      var(--accent) 0 3px,
      transparent 3px 5px);
  opacity: .85;
  border-right: 1px solid var(--accent);
}

.presets { display: flex; gap: 4px; }
.presets button {
  flex: 1;
  padding: 4px 0;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .4px;
  text-transform: uppercase;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text-3);
  cursor: pointer;
}
.presets button:hover, .presets button:active {
  background: var(--accent-bg);
  border-color: var(--accent);
  color: var(--accent);
}

/* -------------------------------------------------------------- buttons --- */

.actions-row { flex-direction: row; gap: 6px; border: 0; background: none; padding: 0; }
.actions-row::before, .actions-row::after { display: none; }
.actions-row > * { margin: 0 !important; }

button { font-family: var(--mono); }

.primary {
  flex: 1;
  padding: 9px;
  background: var(--accent-bg);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
}
.primary:hover { background: var(--accent); color: #020813; }

.primary.aborting { border-color: var(--alert); color: var(--alert); background: rgba(224,90,74,.12); }
.primary.aborting:hover { background: var(--alert); color: #020813; }

.ghost {
  padding: 9px 12px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text-2);
  font-size: 12px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  cursor: pointer;
}
.ghost:hover { border-color: var(--line-2); color: var(--text); }

/* ------------------------------------------------------------------ log --- */

.log {
  height: 140px;
  overflow-y: auto;
  background: var(--panel-2);
  border: 1px solid var(--line);
  padding: 6px 8px;
  font-size: 10.5px;
  line-height: 1.6;
  color: var(--text-2);
}
.log::-webkit-scrollbar { width: 8px; }
.log::-webkit-scrollbar-track { background: var(--panel-2); }
.log::-webkit-scrollbar-thumb { background: var(--line); border: 2px solid var(--panel-2); }

.log .line { white-space: pre-wrap; word-break: break-word; }
.log .line .ts { color: var(--text-3); }
.log .ok   { color: var(--ok); }
.log .warn { color: var(--warn); }
.log .err  { color: var(--alert); }

/* -------------------------------------------------------------- results --- */

.results { gap: 6px; }
.results > * { margin: 0 9px; }
.results:not([hidden])::before, .results:not([hidden])::after { display: none; }

.card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent-2);
  padding: 7px 9px;
  cursor: pointer;
}
.card:hover { background: var(--panel-3); border-left-color: var(--accent); }
.card.active { border-color: var(--line-2); border-left-color: var(--accent); background: var(--panel-3); }
.card.failed { border-left-color: var(--alert); cursor: default; }

.card .name {
  color: var(--text);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.card .meta { color: var(--text-3); font-size: 10px; margin-top: 2px; text-transform: uppercase; letter-spacing: .4px; }
.card .snapped { color: var(--accent); font-size: 11.5px; margin-top: 5px; user-select: all; }
.card .actions { display: flex; gap: 4px; margin-top: 7px; flex-wrap: wrap; }
.card .actions button, .card .actions a {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .6px;
  text-transform: uppercase;
  padding: 3px 7px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-3);
  text-decoration: none;
  cursor: pointer;
}
.card .actions button:hover, .card .actions a:hover { color: var(--accent); border-color: var(--accent); }

.tag { color: var(--text-3); font-size: 9.5px; margin-left: 6px; text-transform: uppercase; letter-spacing: .6px; }

footer .credit { display: block; margin-top: 4px; color: var(--text-2); }

footer {
  margin-top: auto;
  padding: 6px 2px 0;
  border-top: 1px solid var(--line);
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ------------------------------------------------------------------ map --- */

#map-wrap { flex: 1; position: relative; overflow: hidden; }
#map { position: absolute; inset: 0; background: var(--bg); }

.leaflet-tile-pane { filter: var(--map-filter); }
.leaflet-container { background: var(--bg); font-family: var(--mono); font-size: 11px; }

.leaflet-control-zoom { border: none !important; box-shadow: none !important; }
.leaflet-control-zoom a {
  background: rgba(6,18,36,.92) !important;
  color: var(--accent) !important;
  border: 1px solid var(--line) !important;
  border-radius: 0 !important;
  margin-bottom: 4px;
  width: 28px !important;
  height: 28px !important;
  line-height: 26px !important;
  font-size: 15px !important;
}
.leaflet-control-zoom a:hover { background: var(--accent-bg) !important; border-color: var(--accent) !important; }

.leaflet-control-attribution {
  background: rgba(2,8,19,.88) !important;
  color: var(--text-3) !important;
  font-size: 9px !important;
  padding: 2px 7px !important;
}
.leaflet-control-attribution a { color: var(--text-2) !important; }

.pin-label {
  background: rgba(6,18,36,.95);
  color: var(--accent);
  border: 1px solid var(--line-2);
  border-radius: 0;
  padding: 3px 7px;
  font-size: 10.5px;
  letter-spacing: .4px;
  white-space: nowrap;
}
.pin-label::before { display: none; }

.hud {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 500;
  background: rgba(6,18,36,.92);
  border: 1px solid var(--line-2);
  padding: 6px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 212px;
}
.hud-row { display: flex; gap: 14px; justify-content: space-between; align-items: baseline; }
.hud-label { color: var(--text-3); font-size: 9px; letter-spacing: 1.4px; text-transform: uppercase; }
#cursor-readout, #env-readout { color: var(--accent); font-size: 11px; font-variant-numeric: tabular-nums; }

.panel-toggle {
  display: none;
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 1100;
  padding: 8px 13px;
  background: rgba(6,18,36,.94);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  cursor: pointer;
  touch-action: manipulation;
}
.panel-toggle:active { background: var(--accent); color: #020813; }

/* -------------------------------------------------------- touch targets --- */

@media (pointer: coarse) {
  .opts label, label.check { padding: 9px 7px; }
  .presets button { padding: 9px 0; font-size: 10.5px; }
  .step { width: 42px; }
  .gauge { height: 26px; }
  .primary, .ghost { padding: 12px; }
  .card .actions button, .card .actions a { padding: 6px 10px; font-size: 10.5px; }
  .log { height: 120px; }
}

/* -------------------------------------------------------------- narrow --- */

@media (max-width: 760px) {
  #panel {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: min(336px, 90vw);
    z-index: 1000;
    transform: translateX(-102%);
    transition: transform .18s linear;
    box-shadow: 8px 0 28px rgba(0,0,0,.85);
  }
  body.panel-open #panel { transform: translateX(0); }
  .panel-toggle { display: block; }
  body.panel-open .panel-toggle { left: calc(min(336px, 90vw) + 10px); }
  .hud { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  #panel { transition: none !important; }
}

/* ------------------------------------------------------- dart acquisition --- */

.dartfx {
  position: absolute;
  inset: 0;
  z-index: 490;
  pointer-events: none;
  overflow: hidden;
}

/* Phase 1 — scan lines sweep the whole display, each dragging a soft wake */
.fx-scan-h, .fx-scan-v { position: absolute; opacity: 0; }
.fx-scan-h {
  left: 0; right: 0; height: 2px;
  background: linear-gradient(to right, transparent, var(--accent) 12%, #dbeaff 50%, var(--accent) 88%, transparent);
  box-shadow: 0 0 16px 3px var(--accent);
}
.fx-scan-v {
  top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, transparent, var(--accent) 12%, #dbeaff 50%, var(--accent) 88%, transparent);
  box-shadow: 0 0 16px 3px var(--accent);
}
/* the wake trailing behind each line */
.fx-scan-h::before {
  content: ""; position: absolute; left: 0; right: 0; bottom: 100%; height: 90px;
  background: linear-gradient(to top, rgba(77,143,224,.30), transparent);
}
.fx-scan-v::before {
  content: ""; position: absolute; top: 0; bottom: 0; right: 100%; width: 90px;
  background: linear-gradient(to left, rgba(77,143,224,.30), transparent);
}
.dartfx.scanning .fx-scan-h { animation: scanY .98s cubic-bezier(.45,0,.25,1) forwards; }
.dartfx.scanning .fx-scan-v { animation: scanX .98s cubic-bezier(.45,0,.25,1) forwards; }
@keyframes scanY { 0% { top: -4%; opacity: 0; } 8% { opacity: 1; } 82% { opacity: 1; } 100% { top: 104%; opacity: 0; } }
@keyframes scanX { 0% { left: -4%; opacity: 0; } 8% { opacity: 1; } 82% { opacity: 1; } 100% { left: 104%; opacity: 0; } }

/* whole-display wash while scanning, so it reads as a sweep not a stray line */
.dartfx.scanning::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(77,143,224,.14), transparent 68%);
  animation: fxwash .98s ease-out forwards;
}
@keyframes fxwash { 0% { opacity: 0; } 25% { opacity: 1; } 100% { opacity: 0; } }

/* during the sweep the label sits centre-screen */
.dartfx.scanning .fx-status {
  opacity: 1;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  animation: fxblink .5s steps(2) infinite;
}
@keyframes fxblink { 50% { opacity: .45; } }

/* Phase 2 — reticle locks onto the point */
.fx-reticle {
  position: absolute;
  width: 132px; height: 132px;
  margin: -66px 0 0 -66px;
  opacity: 0;
}
.fx-reticle .c { position: absolute; width: 15px; height: 15px; border: 1px solid var(--accent); }
.fx-reticle .tl { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.fx-reticle .tr { top: 0; right: 0; border-left: 0; border-bottom: 0; }
.fx-reticle .bl { bottom: 0; left: 0; border-right: 0; border-top: 0; }
.fx-reticle .br { bottom: 0; right: 0; border-left: 0; border-top: 0; }
.fx-reticle .tick { position: absolute; background: var(--accent); opacity: .8; }
.fx-reticle .tick.x { left: 50%; top: 46%; width: 1px; height: 8%; }
.fx-reticle .tick.y { top: 50%; left: 46%; height: 1px; width: 8%; }
.dartfx.locking .fx-reticle { animation: lock .45s cubic-bezier(.2,.9,.3,1) forwards; }
@keyframes lock {
  0%   { opacity: 0; transform: scale(2.6) rotate(-12deg); }
  55%  { opacity: 1; }
  100% { opacity: 1; transform: scale(1) rotate(0deg); }
}

/* Phase 3 — sonar rings */
.fx-ping {
  position: absolute;
  width: 24px; height: 24px;
  margin: -12px 0 0 -12px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  opacity: 0;
}
.dartfx.pinging .fx-ping { animation: ping 1.5s cubic-bezier(.15,.6,.3,1) forwards; }
.dartfx.pinging .p2 { animation-delay: .22s; }
.dartfx.pinging .p3 { animation-delay: .44s; }
@keyframes ping {
  0%   { opacity: .95; transform: scale(1); }
  100% { opacity: 0;   transform: scale(15); }
}

.fx-status {
  position: absolute;
  transform: translate(-50%, -76px);
  padding: 3px 9px;
  background: rgba(6,18,36,.92);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
}
.dartfx.locking .fx-status, .dartfx.pinging .fx-status { opacity: 1; }

.primary.throw { letter-spacing: 2.6px; }
.primary.throw[disabled] { opacity: .5; cursor: wait; }

@media (prefers-reduced-motion: reduce) {
  .dartfx .fx-scan-h, .dartfx .fx-scan-v, .dartfx .fx-reticle, .dartfx .fx-ping { animation: none !important; }
}

/* --------------------------------------------------------- map status bar --- */

.statusbar {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 500;
  display: flex;
  align-items: center;
  gap: 9px;
  max-width: min(460px, calc(100% - 24px));
  padding: 7px 12px;
  background: rgba(6,18,36,.94);
  border: 1px solid var(--line-2);
  border-left: 2px solid var(--accent);
  color: var(--text);
  font-size: 11.5px;
  letter-spacing: .3px;
}

.status-dot {
  width: 7px; height: 7px;
  flex: 0 0 auto;
  background: var(--accent);
}
.statusbar.busy .status-dot { animation: statuspulse .9s steps(2) infinite; }
@keyframes statuspulse { 50% { opacity: .25; } }

.statusbar.ok   { border-left-color: var(--ok); }
.statusbar.ok   .status-dot { background: var(--ok); animation: none; }
.statusbar.warn { border-left-color: var(--warn); }
.statusbar.warn .status-dot { background: var(--warn); animation: none; }
.statusbar.err  { border-left-color: var(--alert); }
.statusbar.err  .status-dot { background: var(--alert); animation: none; }

#status-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 760px) {
  .statusbar { left: 8px; right: 8px; bottom: 8px; max-width: none; font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  .statusbar .status-dot { animation: none !important; }
}

/* multi-line result label */
.pin-label .pl-name { color: var(--text); font-size: 11.5px; margin-bottom: 2px; }
.pin-label .pl-row { color: var(--text-2); font-size: 10px; letter-spacing: .3px; }
.pin-label .pl-coords { color: var(--accent); font-size: 10.5px; margin: 2px 0 1px; }

.pin-label { pointer-events: auto; }
.pin-label .pl-sv {
  display: block;
  margin-top: 6px;
  padding: 4px 7px;
  border: 1px solid var(--line-2);
  color: var(--accent);
  font-size: 10px;
  letter-spacing: .8px;
  text-transform: uppercase;
  text-align: center;
  text-decoration: none;
}
.pin-label .pl-sv:hover { background: var(--accent); color: #020813; border-color: var(--accent); }