/* AUV project site — interactive demo.
   A dark marine band holding a small mission dashboard: stage strip,
   grid survey map, coverage, alert, target observation view (reference imagery),
   analysis panel, detection timeline and target log. */

.demo {
  position: relative;
  padding-block: var(--space-9);
  background:
    repeating-radial-gradient(circle at 12% 0%, rgb(255 255 255 / 0.05) 0 1px, transparent 1px 52px),
    var(--deep);
  color: var(--on-deep);
  scroll-margin-top: var(--header-h);
}
.demo h2, .demo h3 { color: #fff; }

.demo__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-5) var(--space-6);
  margin-bottom: var(--space-6);
}
.demo__head p { margin-top: var(--space-3); max-width: 52ch; font-family: var(--font-prose); font-size: 1.15rem; line-height: 1.55; color: color-mix(in srgb, var(--on-deep) 82%, transparent); }

.demo__controls { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }

.demo .btn { border-color: rgb(255 255 255 / 0.55); color: #fff; }
.demo .btn:hover { background: #fff; color: var(--deep); }
.demo .btn:disabled:hover { background: transparent; color: #fff; }
.demo .btn--go { background: var(--hull); border-color: var(--hull); color: var(--deep); }
.demo .btn--go:hover { background: #d8ac4a; border-color: #d8ac4a; color: var(--deep); }
.demo .btn--go:disabled:hover { background: var(--hull); color: var(--deep); }

.demo-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 46px;
  padding: 0 var(--space-4);
  border: 1px solid rgb(255 255 255 / 0.25);
  border-radius: var(--radius);
  font-weight: 600;
}
.demo-status i { width: 9px; height: 9px; border-radius: 50%; background: #7fd6e6; }
.demo-status[data-state="alert"] i { background: var(--hull); }
.demo-status[data-state="done"] i { background: #9fb0bd; }

/* stage strip */
.demo-stages { display: grid; gap: var(--space-2); margin-bottom: var(--space-4); grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (min-width: 600px) { .demo-stages { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 1040px) { .demo-stages { grid-template-columns: repeat(8, minmax(0, 1fr)); } }
.demo-stages li {
  padding: var(--space-3) var(--space-3);
  border-top: 3px solid rgb(255 255 255 / 0.22);
  font-weight: 600;
  font-size: 0.86rem;
  line-height: 1.3;
  color: color-mix(in srgb, var(--on-deep) 60%, transparent);
  transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}
.demo-stages li.is-done { color: color-mix(in srgb, var(--on-deep) 85%, transparent); border-top-color: #7fd6e6; }
.demo-stages li.is-active { color: #fff; border-top-color: var(--hull); background: rgb(255 255 255 / 0.09); }

/* layout */
.demo__grid { display: grid; gap: var(--space-5); }
@media (min-width: 980px) { .demo__grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); align-items: start; } }
.demo__main { display: grid; gap: var(--space-5); min-width: 0; }
.demo__side { min-width: 0; }
.demo__side { display: grid; gap: var(--space-5); }

.demo-card {
  padding: var(--space-4);
  background: var(--sheet);
  color: var(--ink);
  border-radius: var(--radius-lg);
}
.demo-card h3 { color: var(--ink); font-size: 1rem; margin-bottom: var(--space-3); }
.demo-card__head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-3); }
.demo-card__head h3 { margin: 0; }
.demo-card__head span { font-size: var(--text-small); color: var(--ink-soft); }

/* map */
.map-screen { border-radius: var(--radius); overflow: hidden; background: #071a26; }
.map-screen svg { display: block; width: 100%; height: auto; }
.map-legend { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); margin-top: var(--space-3); font-size: var(--text-small); color: var(--ink-soft); }
.map-legend span { display: inline-flex; align-items: center; gap: var(--space-2); }
.map-legend i { width: 10px; height: 10px; display: inline-block; }
.map-legend .k-auv { background: var(--hull); border-radius: 2px; transform: rotate(45deg) scale(0.9); }
.map-legend .k-track { height: 3px; width: 16px; background: #3fa9bf; }
.map-legend .k-cover { background: rgb(127 214 230 / 0.45); border: 1px solid #5fb8cc; }
.map-legend .k-safe { background: #34b27a; border-radius: 50%; }
.map-legend .k-hazard { background: var(--hull); border-radius: 1px; }
.map-legend .k-high { background: #ef6b5b; transform: rotate(45deg) scale(0.9); }
.map-legend .k-unknown { background: #a9b6c2; border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--risk-unknown); }
.map-note { margin-top: var(--space-2); font-size: var(--text-small); color: var(--ink-soft); }
#demo-ticks text { stroke: none; }
#demo-ticks line { stroke-width: 1; }
#demo-ticks .scale { stroke-width: 2; }

/* target observation view (simulation / reference imagery) */
.camera { position: relative; aspect-ratio: 3 / 2; overflow: hidden; border-radius: var(--radius); background: #071a26; }
.camera__stage { position: absolute; inset: 0; transition: transform 1.6s ease; }
.camera__stage.is-closeup { transform: scale(1.45); }
.camera__scene { position: absolute; inset: 0; opacity: 0; transition: opacity 0.3s ease; }
.camera__scene.is-visible { opacity: 1; }
.camera__scene img, .camera__scene svg { width: 100%; height: 100%; display: block; object-fit: cover; }

.det-box {
  position: absolute;
  border: 2px dashed #fff;
  border-radius: 4px;
  box-shadow: 0 0 0 1px rgb(10 37 54 / 0.5);
  pointer-events: none;
}
.det-box[hidden] { display: none; }
.det-box.is-classified { border-style: solid; border-color: var(--hull); }
.det-box__label {
  position: absolute;
  left: -2px;
  bottom: 100%;
  margin-bottom: 4px;
  padding: 3px 9px;
  border-radius: 4px 4px 4px 0;
  background: var(--hull);
  color: var(--deep);
  font-weight: 700;
  font-size: 0.78rem;
  white-space: nowrap;
}
.det-box:not(.is-classified) .det-box__label { display: none; }
.det-box.is-flip .det-box__label { bottom: auto; top: 100%; margin: 4px 0 0; border-radius: 0 4px 4px 4px; }
.det-box.is-right .det-box__label { left: auto; right: -2px; border-radius: 4px 4px 0 4px; }
.det-box[data-level="high"] { border-color: #ef6b5b; }
.det-box[data-level="high"] .det-box__label { background: #ef6b5b; color: var(--deep); }
.det-box[data-level="unknown"] { border-color: #c9d3dc; }
.det-box[data-level="unknown"] .det-box__label { background: #c9d3dc; }
.det-box[data-level="safe"] { border-color: #5fd29a; }
.det-box[data-level="safe"] .det-box__label { background: #5fd29a; }

/* The sonar reference image carries its own credits and scale bar: show it whole */
.camera__scene--contain { background: #071a26; }
.camera__scene--contain img { object-fit: contain; }
.obs-credit { margin-top: var(--space-2); min-height: 3.6em; font-size: 0.78rem; line-height: 1.45; color: var(--ink-soft); }

.camera__chip {
  position: absolute;
  left: 10px;
  top: 10px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgb(10 37 54 / 0.72);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
}

/* analysis: a decision trail that builds up while the mission runs */
.analysis { min-height: 12rem; max-height: 34rem; overflow-y: auto; padding-right: 2px; }
.analysis__empty { display: grid; place-content: center; min-height: 10rem; text-align: center; color: var(--ink-soft); }

.trail__block { padding: var(--space-3) 0 var(--space-3) var(--space-4); border-left: 3px solid var(--line); }
.trail__block + .trail__block { margin-top: var(--space-2); }
.trail__block.is-current { border-left-color: var(--hull); }
.trail__block.is-new { animation: reveal 0.4s ease both; }
.trail__block h4 { margin: 0 0 var(--space-2); font-size: 0.82rem; font-weight: 700; color: var(--sea); letter-spacing: 0.01em; }
.trail__id { font-weight: 800; font-size: 1.25rem; line-height: 1.2; }
.trail__meta { margin-top: 4px; font-size: var(--text-small); color: var(--ink-soft); }
.trail__meta strong { color: var(--ink); }
.trail__text { font-size: 0.95rem; line-height: 1.5; }
.trail__decision { margin-bottom: var(--space-2); }

.demo .chip { display: inline-block; padding: 4px 14px; border: 0; border-radius: 999px; background: var(--sea-soft); color: var(--sea); font-weight: 700; font-size: 0.95rem; }
.demo .chip--safe { background: var(--risk-safe-soft); color: var(--risk-safe-ink); }
.demo .chip--hazard { background: var(--risk-hazard-soft); color: var(--risk-hazard-ink); box-shadow: inset 0 0 0 1.5px var(--risk-hazard); }
.demo .chip--high { background: var(--risk-high-soft); color: var(--risk-high-ink); box-shadow: inset 0 0 0 1.5px var(--risk-high); }
.demo .chip--unknown { background: var(--risk-unknown-soft); color: var(--risk-unknown-ink); box-shadow: inset 0 0 0 1.5px var(--risk-unknown); }

.evidence { display: grid; gap: 6px; }
.evidence li { display: flex; justify-content: space-between; align-items: center; gap: var(--space-3); padding-bottom: 6px; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
.evidence li:last-child { border-bottom: 0; }
.trail__block h4 .tag { margin-left: 4px; }

.kv > div { display: flex; justify-content: space-between; gap: var(--space-4); padding: 5px 0; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
.kv > div:last-child { border-bottom: 0; }
.kv dt { color: var(--ink-soft); }
.kv dd { font-weight: 650; text-align: right; }


.inspect-steps { margin-top: var(--space-3); display: grid; gap: 6px; }
.inspect-steps li { position: relative; padding-left: 26px; font-size: 0.92rem; color: var(--ink-soft); }
.inspect-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 14px;
  height: 14px;
  border: 2px solid var(--line-strong);
  border-radius: 50%;
}
.inspect-steps li.is-active { color: var(--ink); font-weight: 650; }
.inspect-steps li.is-active::before { border-color: var(--hull); background: var(--hull-soft); }
.inspect-steps li.is-done { color: var(--ink); }
.inspect-steps li.is-done::before { border-color: var(--sea); background: var(--sea); }

.summary { border-left-color: var(--sea); }
.summary h4 { font-size: 1.05rem; color: var(--ink); }
.summary__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: var(--space-3); margin: var(--space-3) 0 var(--space-4); }
.summary__grid > div { padding: var(--space-3); border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
.summary__grid strong { display: block; font-size: 1.6rem; line-height: 1.1; }
.summary__grid span { font-size: var(--text-small); color: var(--ink-soft); }

@keyframes reveal { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* the marker on the map: highlighted when it is placed and while it is inspected */
.marker .halo { opacity: 0; transform-box: fill-box; transform-origin: center; }
.marker.is-active .halo { opacity: 0.9; animation: pulse 1.6s ease-out 3; }
.marker.is-inspecting .halo { opacity: 0.9; animation: pulse 1.6s ease-out infinite; }
@keyframes pulse { from { transform: scale(0.6); opacity: 0.9; } to { transform: scale(1.5); opacity: 0; } }

/* cards flash when a target is marked: detection > analysis > decision > map marker > target log */
.demo-card.is-flash { animation: card-flash 1.6s ease-out; }
@keyframes card-flash { 0% { box-shadow: 0 0 0 4px var(--hull); } 100% { box-shadow: 0 0 0 0 rgb(196 152 55 / 0); } }

@media (prefers-reduced-motion: reduce) {
  .trail__block.is-new, .marker .halo, .demo-card.is-flash, .demo-alert.is-flash, .log-table tr.is-new td { animation: none !important; }
  .camera__scene, .camera__stage, .demo-stages li { transition: none; }
}

/* Pause freezes every animation as well */
.demo.is-paused *, .demo.is-paused *::before, .demo.is-paused *::after { animation-play-state: paused !important; }

/* log */
.demo-log { margin-top: var(--space-5); }
.demo-log .demo-card__head { flex-wrap: wrap; row-gap: var(--space-2); }
.demo-log__stats { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); font-size: var(--text-small); color: var(--ink-soft); }
.demo-log__stats span { white-space: nowrap; }
.demo-log__stats strong { color: var(--ink); font-size: 1rem; }
.log-scroll { overflow-x: auto; }
.log-table { width: 100%; min-width: 1040px; border-collapse: collapse; font-size: 0.9rem; }
.log-table th, .log-table td { padding: 9px 12px 9px 0; text-align: left; border-bottom: 1px solid var(--line); }
.log-table thead th { font-size: var(--text-small); font-weight: 650; color: var(--ink-soft); border-bottom: 2px solid var(--ink); }
.log-table .is-empty td { color: var(--ink-soft); text-align: center; padding: var(--space-5) 0; }
.log-table .is-alert { color: var(--hull-ink); font-weight: 650; }
.log-table tr.is-new td { animation: row-flash 2.4s ease-out; }
@keyframes row-flash { 0% { background: var(--hull-soft); } 100% { background: transparent; } }

/* Full-screen demo: fills the window so it can be screen-recorded without page chrome */
.demo-locked { overflow: hidden; }
.demo.is-recording {
  position: fixed;
  inset: 0;
  z-index: 60;
  overflow-y: auto;
  padding-block: var(--space-5) var(--space-6);
}
.demo.is-recording .demo__head { margin-bottom: var(--space-4); }
.demo.is-recording .demo__head p { display: none; }

/* scenario picker */
.scenario { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-small); font-weight: 600; color: color-mix(in srgb, var(--on-deep) 85%, transparent); }
.scenario select {
  min-height: 46px;
  padding: 0 var(--space-3);
  border: 1px solid rgb(255 255 255 / 0.45);
  border-radius: var(--radius);
  background: var(--deep);
  color: #fff;
  font: inherit;
  font-weight: 600;
}
.scenario select:disabled { opacity: 0.55; }
.scenario select:focus-visible { outline: 3px solid #7fd6e6; outline-offset: 2px; }

/* simulated alert: always present, so the layout never jumps while recording */
.demo-alert {
  margin-bottom: var(--space-5);
  padding: var(--space-3) var(--space-4);
  background: var(--sheet);
  color: var(--ink);
  border-radius: var(--radius-lg);
  border-left: 6px solid var(--line-strong);
  min-height: 96px;
}
.demo-alert__head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-2) var(--space-4); margin-bottom: var(--space-2); }
.demo-alert__head strong { font-size: 1.02rem; }
.demo-alert__body { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px var(--space-4); font-size: 0.9rem; }
@media (max-width: 719px) { .demo-alert__body > div:nth-child(n+4) { grid-column: 1 / -1; } }
@media (min-width: 720px) { .demo-alert__body { grid-template-columns: auto auto minmax(0, 1.2fr) minmax(0, 1.3fr) minmax(0, 1.6fr); } }
.demo-alert__body dt { font-size: 0.76rem; color: var(--ink-soft); }
.demo-alert__body dd { font-weight: 650; }
.demo-alert__idle { grid-column: 1 / -1; }
.demo-alert__body .demo-alert__idle dd { font-weight: 400; color: var(--ink-soft); }
.demo-alert[data-kind="safe"] { border-left-color: var(--risk-safe); }
.demo-alert[data-kind="safe"] strong { color: var(--risk-safe-ink); }
.demo-alert[data-kind="hazard"] { border-left-color: var(--risk-hazard); background: var(--risk-hazard-soft); }
.demo-alert[data-kind="hazard"] strong { color: var(--risk-hazard-ink); }
.demo-alert[data-kind="high"] { border-left-color: var(--risk-high); background: var(--risk-high-soft); }
.demo-alert[data-kind="high"] strong { color: var(--risk-high-ink); }
.demo-alert[data-kind="unknown"] { border-left-color: var(--risk-unknown); background: var(--risk-unknown-soft); }
.demo-alert[data-kind="unknown"] strong { color: var(--risk-unknown-ink); }
.demo-alert.is-flash { animation: card-flash 1.6s ease-out; }

/* survey coverage */
.coverage__info { margin-bottom: var(--space-3); }
.coverage__info > div { display: flex; justify-content: space-between; gap: var(--space-4); padding: 5px 0; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
.coverage__info dt { color: var(--ink-soft); }
.coverage__info dd { font-weight: 650; text-align: right; }
.coverage__live { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2); }
@media (min-width: 560px) { .coverage__live { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.coverage__live > div { padding: var(--space-2) var(--space-3); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); }
.coverage__live span { display: block; font-size: 0.76rem; color: var(--ink-soft); }
.coverage__live strong { font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.coverage__bar { height: 8px; margin: var(--space-3) 0; border-radius: 4px; background: var(--line); overflow: hidden; }
.coverage__bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--sea), #4fb6c9); }

/* detection timeline above the target log */
.timeline { position: relative; height: 34px; margin: var(--space-2) 0 var(--space-3); border-bottom: 2px solid var(--line); }
.timeline__fill { position: absolute; left: 0; bottom: -2px; height: 2px; width: 0; background: var(--sea); }
.timeline__mark {
  position: absolute;
  bottom: 4px;
  transform: translateX(-50%);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.timeline__mark::after { content: ""; position: absolute; left: 50%; bottom: -8px; width: 2px; height: 6px; background: currentColor; }
.timeline__mark--safe { background: var(--risk-safe-soft); color: var(--risk-safe-ink); }
.timeline__mark--hazard { background: var(--risk-hazard-soft); color: var(--risk-hazard-ink); }
.timeline__mark--high { background: var(--risk-high-soft); color: var(--risk-high-ink); }
.timeline__mark--unknown { background: var(--risk-unknown-soft); color: var(--risk-unknown-ink); }
.log-table td { vertical-align: top; }
.timeline__time { margin-left: 4px; }
@media (max-width: 599px) { .timeline__time { display: none; } }