:root {
  --accent: #14cbb4;
  --accent-strong: #079f8d;
  --accent-soft: #d9fbf4;
  --accent-ink: #063f3b;
  --bg: #f3f7f6;
  --surface: #ffffff;
  --surface-2: #edf4f2;
  --surface-3: #e5eeec;
  --text: #122522;
  --muted: #60716e;
  --border: #ccdad7;
  --shadow: 0 18px 55px rgba(17, 52, 47, .12);
  --danger: #c84444;
  --warning: #a86500;
  --focus: 0 0 0 4px rgba(20, 203, 180, .25);
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 28px;
  --content: 1220px;
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #081412;
  --surface: #10211e;
  --surface-2: #152a26;
  --surface-3: #1a342f;
  --text: #ecfffb;
  --muted: #a8bbb7;
  --border: #2b4540;
  --accent-soft: #143b35;
  --accent-ink: #dffff8;
  --shadow: 0 22px 65px rgba(0, 0, 0, .36);
  --danger: #ff7979;
  --warning: #ffc15c;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  html[data-theme="system"] {
    --bg: #081412;
    --surface: #10211e;
    --surface-2: #152a26;
    --surface-3: #1a342f;
    --text: #ecfffb;
    --muted: #a8bbb7;
    --border: #2b4540;
    --accent-soft: #143b35;
    --accent-ink: #dffff8;
    --shadow: 0 22px 65px rgba(0, 0, 0, .36);
    --danger: #ff7979;
    --warning: #ffc15c;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}
button, input, select, textarea { font: inherit; }
button, a, summary, label { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
img, svg { max-width: 100%; }
[hidden], .hidden { display: none !important; }

:focus-visible { outline: none; box-shadow: var(--focus); }
.section-shell { width: min(var(--content), calc(100% - 40px)); margin-inline: auto; }
.section-block { padding: 96px 0; }

.topbar {
  position: sticky;
  z-index: 1000;
  top: 0;
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 72px;
  padding: 10px max(20px, calc((100vw - var(--content)) / 2));
  border-bottom: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 850; letter-spacing: -.02em; }
.brand small { padding: 2px 7px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-strong); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
.brand-mark { position: relative; display: inline-block; width: 32px; height: 32px; border-radius: 10px; background: var(--accent); overflow: hidden; box-shadow: inset 0 0 0 1px rgba(255,255,255,.35); }
.brand-mark span { position: absolute; display: block; width: 7px; height: 7px; border-radius: 99px; background: #063f3b; }
.brand-mark span:nth-child(1) { left: 6px; bottom: 6px; }
.brand-mark span:nth-child(2) { left: 13px; top: 12px; }
.brand-mark span:nth-child(3) { right: 5px; top: 5px; }
.brand-mark::after { content: ""; position: absolute; inset: 7px 8px; border-left: 3px solid #063f3b; border-top: 3px solid #063f3b; transform: rotate(38deg); border-radius: 4px; opacity: .85; }
.desktop-nav { display: flex; align-items: center; gap: 24px; margin-left: auto; color: var(--muted); font-weight: 650; }
.desktop-nav a:hover { color: var(--text); }
.top-actions { display: flex; align-items: center; gap: 8px; }

.btn, .icon-btn, .text-button {
  border: 0;
  cursor: pointer;
  font-weight: 750;
  transition: transform .16s ease, background .16s ease, border-color .16s ease, opacity .16s ease;
}
.btn {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--accent);
  border-radius: 13px;
  background: var(--accent);
  color: #063f3b;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); filter: saturate(1.08); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { cursor: not-allowed; opacity: .46; }
.btn-small { min-height: 40px; padding: 8px 14px; }
.btn-large { min-height: 54px; padding: 14px 22px; font-size: 17px; border-radius: 15px; }
.btn-full { width: 100%; }
.btn-ghost { border-color: var(--border); background: var(--surface); color: var(--text); }
.btn-warning { border-color: #f0b348; background: #f0b348; color: #342000; }
.btn-danger { border-color: color-mix(in srgb, var(--danger) 55%, var(--border)); background: color-mix(in srgb, var(--danger) 14%, var(--surface)); color: var(--danger); }
.icon-btn { display: inline-grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 13px; background: var(--surface); font-size: 20px; }
.icon-btn.subtle { border-color: transparent; background: transparent; color: var(--muted); }
.text-button { padding: 8px 0; background: transparent; color: var(--accent-strong); text-align: left; }
.file-button { position: relative; overflow: hidden; }
.file-button input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

.hero { display: grid; min-height: 680px; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 76px; padding-top: 72px; padding-bottom: 86px; }
.hero-copy h1 { max-width: 720px; margin: 12px 0 22px; font-size: clamp(48px, 7vw, 84px); line-height: .98; letter-spacing: -.065em; }
.hero-copy h1 span { color: var(--accent-strong); }
.eyebrow { color: var(--accent-strong); font-size: 13px; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.lead { max-width: 660px; color: var(--muted); font-size: clamp(19px, 2.2vw, 24px); line-height: 1.45; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 26px; color: var(--muted); font-size: 14px; font-weight: 680; }
.hero-visual { position: relative; min-height: 470px; display: grid; place-items: center; }
.visual-glow { position: absolute; width: 360px; height: 360px; border-radius: 50%; background: var(--accent); filter: blur(90px); opacity: .16; }
.route-card { border: 1px solid color-mix(in srgb, var(--border) 80%, transparent); border-radius: 22px; background: color-mix(in srgb, var(--surface) 94%, transparent); box-shadow: var(--shadow); }
.route-card-main { position: relative; z-index: 2; width: min(100%, 500px); padding: 24px; transform: rotate(-1.2deg); }
.route-card-head { display: flex; justify-content: space-between; gap: 20px; }
.route-card-head span { color: var(--muted); font-weight: 700; }
.route-card-head strong { font-size: 22px; }
.mini-route { margin: 18px 0; border-radius: 16px; background: var(--surface-2); overflow: hidden; }
.mini-route svg { display: block; }
.mini-grid { fill: none; stroke: var(--border); stroke-width: 1; }
.mini-path-shadow { fill: none; stroke: var(--accent-ink); stroke-width: 11; stroke-linecap: round; opacity: .5; }
.mini-path { fill: none; stroke: var(--accent); stroke-width: 6; stroke-linecap: round; }
.mini-route circle { fill: var(--surface); stroke: var(--accent-strong); stroke-width: 5; }
.route-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.route-pills span, .status-pill { padding: 6px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-ink); font-size: 12px; font-weight: 800; }
.floating-card { position: absolute; z-index: 3; display: grid; gap: 3px; padding: 14px 17px; font-size: 13px; }
.floating-card span { color: var(--muted); }
.fc-one { right: -12px; top: 45px; transform: rotate(3deg); }
.fc-two { left: -12px; bottom: 42px; transform: rotate(-4deg); }

.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 36px; margin-bottom: 34px; }
.section-heading.narrow { display: block; max-width: 760px; }
.section-heading h2 { margin: 8px 0 0; font-size: clamp(34px, 5vw, 58px); line-height: 1.06; letter-spacing: -.045em; }
.section-heading p { color: var(--muted); font-size: 19px; }
.usecase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.usecase-card { display: flex; min-height: 300px; flex-direction: column; align-items: flex-start; padding: 28px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.usecase-card.featured { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); background: linear-gradient(160deg, var(--surface), var(--accent-soft)); }
.usecase-card h3 { margin: 18px 0 10px; font-size: 25px; }
.usecase-card p { color: var(--muted); }
.usecase-card .text-button { margin-top: auto; }
.uc-icon { display: grid; width: 52px; height: 52px; place-items: center; border-radius: 16px; background: var(--accent-soft); color: var(--accent-strong); font-size: 28px; font-weight: 900; }

.workspace-section { padding: 90px 0; background: color-mix(in srgb, var(--surface-2) 65%, var(--bg)); border-block: 1px solid var(--border); }
.workspace-shell { max-width: 1420px; }
.workspace-header { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.workspace-header h2 { margin: 5px 0 0; font-size: clamp(36px, 5vw, 58px); line-height: 1; }
.workspace-status { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.status-pill.offline { background: color-mix(in srgb, var(--warning) 18%, var(--surface)); color: var(--warning); }
.status-pill.neutral { background: var(--surface); color: var(--muted); border: 1px solid var(--border); }
.status-pill.saving { color: var(--accent-strong); }
.workspace-tabs { display: flex; gap: 7px; margin-bottom: 14px; overflow-x: auto; scrollbar-width: thin; }
.workspace-tab { flex: 0 0 auto; min-height: 48px; padding: 11px 17px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); color: var(--muted); cursor: pointer; font-weight: 780; }
.workspace-tab.active { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-ink); }
.workspace-grid { display: grid; min-height: 700px; grid-template-columns: minmax(330px, 430px) 1fr; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow); }
.control-panel { min-height: 700px; padding: 26px; border-right: 1px solid var(--border); overflow-y: auto; }
.tool-panel { display: none; }
.tool-panel.active { display: block; }
.tool-panel h3 { margin: 5px 0 8px; font-size: 29px; letter-spacing: -.035em; }
.tool-panel h4 { margin: 0 0 12px; font-size: 18px; }
.panel-title-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.step-label { color: var(--accent-strong); font-size: 12px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.muted, .fine-print { color: var(--muted); }
.fine-print { font-size: 13px; line-height: 1.48; }
.form-divider { height: 1px; margin: 24px 0; background: var(--border); }
.or-divider { display: flex; align-items: center; gap: 10px; margin: 17px 0; color: var(--muted); font-size: 12px; text-transform: uppercase; }
.or-divider::before, .or-divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }

label { display: grid; gap: 7px; margin-top: 15px; }
label > span, .field-label { color: var(--text); font-size: 14px; font-weight: 760; }
input, select, textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 12px;
  outline: none;
  background: var(--surface);
  color: var(--text);
}
textarea { min-height: 92px; resize: vertical; }
input::placeholder, textarea::placeholder { color: color-mix(in srgb, var(--muted) 75%, transparent); }
input:focus, select:focus, textarea:focus { border-color: var(--accent-strong); box-shadow: var(--focus); }
.search-row, .copy-row { display: flex; gap: 8px; }
.search-row input, .copy-row input { flex: 1; min-width: 0; }
.two-col-fields { display: grid; grid-template-columns: 1.2fr .8fr; gap: 12px; }
.button-stack, .toggle-list { display: grid; gap: 10px; margin-top: 15px; }
.segmented { display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; padding: 5px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface-2); }
.segmented button { min-height: 43px; padding: 8px; border: 0; border-radius: 10px; background: transparent; color: var(--muted); cursor: pointer; font-size: 14px; font-weight: 780; }
.segmented button.active { background: var(--surface); color: var(--text); box-shadow: 0 3px 12px rgba(8, 44, 38, .10); }
.segmented.compact button { min-height: 38px; font-size: 12px; }
.route-mode-picker { grid-template-columns: 1fr; }
.route-integrity { margin-top: 18px; padding: 15px; border: 1px solid color-mix(in srgb, var(--accent) 42%, var(--border)); border-radius: 15px; background: var(--accent-soft); }
.switch-row { grid-template-columns: 1fr auto; align-items: center; gap: 15px; margin: 0; padding: 14px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); cursor: pointer; }
.switch-row span { display: grid; gap: 2px; }
.switch-row small { color: var(--muted); font-weight: 500; }
.switch-row input { position: absolute; opacity: 0; pointer-events: none; }
.switch-row i { position: relative; width: 48px; height: 28px; border-radius: 999px; background: var(--surface-3); border: 1px solid var(--border); }
.switch-row i::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--surface); box-shadow: 0 2px 7px rgba(0,0,0,.18); transition: left .16s ease; }
.switch-row input:checked + i { background: var(--accent); border-color: var(--accent); }
.switch-row input:checked + i::after { left: 23px; background: #063f3b; }

.waypoint-list { display: grid; gap: 8px; margin: 17px 0; }
.waypoint-row { display: grid; grid-template-columns: 36px 1fr 40px; align-items: center; gap: 10px; padding: 11px 8px; border: 1px solid var(--border); border-radius: 13px; background: var(--surface); }
.waypoint-number { display: grid; width: 31px; height: 31px; place-items: center; border-radius: 10px; background: var(--accent-soft); color: var(--accent-strong); font-size: 13px; font-weight: 900; }
.waypoint-row div { min-width: 0; }
.waypoint-row b, .waypoint-row small { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.waypoint-row small { color: var(--muted); font-size: 11px; }
.empty-state { margin: 10px 0; padding: 16px; border-radius: 13px; background: var(--surface-2); color: var(--muted); font-size: 14px; }
.drop-zone { min-height: 170px; place-items: center; align-content: center; padding: 24px; border: 2px dashed var(--border); border-radius: 18px; background: var(--surface-2); text-align: center; cursor: pointer; }
.drop-zone.dragging { border-color: var(--accent); background: var(--accent-soft); }
.drop-zone input { display: none; }
.drop-zone small { color: var(--muted); }
.drop-icon { font-size: 35px; color: var(--accent-strong); }
.analysis-box, .summary-card, .invite-box, .settings-card, .gps-readout { margin-top: 15px; padding: 15px; border: 1px solid var(--border); border-radius: 15px; background: var(--surface-2); }
.analysis-box ul { margin: 8px 0; padding-left: 20px; }
.warning-text { color: var(--warning); }
.summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.summary-grid span { padding: 12px; border-radius: 12px; background: var(--surface); }
.summary-grid small, .summary-grid strong { display: block; }
.summary-grid small { color: var(--muted); }
.priority-picker { margin-top: 17px; }
.collaborator-list { display: grid; gap: 8px; }
.collaborator-list > div { padding: 11px; border-radius: 12px; background: var(--surface-2); }
.settings-card { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.settings-card p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.navigation-preview { display: grid; grid-template-columns: 78px 1fr; align-items: center; gap: 13px; margin: 18px 0; padding: 17px; border-radius: 18px; background: var(--accent-ink); color: white; }
.nav-arrow { display: grid; width: 68px; height: 68px; place-items: center; border-radius: 18px; background: var(--accent); color: #063f3b; font-size: 44px; font-weight: 900; }
.navigation-preview div { display: grid; }
.navigation-preview small { opacity: .7; }
.navigation-preview strong { font-size: 19px; }
.navigation-preview div span { color: var(--accent); font-weight: 800; }

.map-panel { position: relative; min-width: 0; min-height: 700px; background: #dbe8e4; }
#map { position: absolute; inset: 0; }
.map-toolbar { position: absolute; z-index: 5; top: 14px; left: 14px; right: 14px; display: flex; align-items: center; justify-content: space-between; gap: 12px; pointer-events: none; }
.map-toolbar > * { pointer-events: auto; }
.map-status-copy { display: grid; max-width: min(70%, 520px); padding: 10px 13px; border: 1px solid rgba(22,47,42,.15); border-radius: 13px; background: rgba(255,255,255,.91); color: #122522; box-shadow: 0 8px 25px rgba(0,0,0,.12); backdrop-filter: blur(12px); }
.map-status-copy small { color: #556965; }
.map-toolbar > div:last-child { display: flex; gap: 7px; }
.map-offline-note { position: absolute; z-index: 5; left: 50%; bottom: 42px; transform: translateX(-50%); max-width: calc(100% - 40px); padding: 9px 13px; border-radius: 12px; background: #152a26; color: white; font-size: 13px; text-align: center; }
.map-attribution-custom { position: absolute; z-index: 4; right: 5px; bottom: 2px; padding: 2px 5px; border-radius: 5px; background: rgba(255,255,255,.82); color: #435653; font-size: 10px; }
.map-fallback { position: absolute; inset: 0; display: grid; place-content: center; gap: 6px; padding: 30px; background: var(--surface-2); text-align: center; }
.waypoint-marker { display: grid; min-width: 36px; height: 36px; place-items: center; padding: 0 8px; border: 3px solid #063f3b; border-radius: 12px 12px 12px 3px; background: var(--accent); color: #063f3b; box-shadow: 0 5px 15px rgba(0,0,0,.22); font-weight: 900; transform: rotate(-8deg); }
.waypoint-marker span { transform: rotate(8deg); }

.architecture-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.architecture-grid div { padding: 24px; border: 1px solid var(--border); border-radius: 20px; background: var(--surface); }
.architecture-grid span { color: var(--accent-strong); font-size: 12px; font-weight: 900; }
.architecture-grid b { display: block; margin-top: 18px; font-size: 19px; }
.architecture-grid p { color: var(--muted); }
.faq-list { display: grid; max-width: 900px; gap: 10px; }
details { border: 1px solid var(--border); border-radius: 17px; background: var(--surface); }
summary { min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 19px; cursor: pointer; font-weight: 780; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent-strong); font-size: 25px; }
details[open] summary::after { content: "–"; }
details p { margin: 0; padding: 0 19px 19px; color: var(--muted); }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 34px; padding-bottom: 34px; color: var(--muted); }
.footer p { text-align: center; }

.toast-region { position: fixed; z-index: 3000; right: 18px; bottom: 18px; display: grid; width: min(390px, calc(100% - 36px)); gap: 9px; pointer-events: none; }
.toast { padding: 14px 16px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); color: var(--text); box-shadow: var(--shadow); font-weight: 650; }
.toast.success { border-color: color-mix(in srgb, var(--accent) 65%, var(--border)); }
.toast.warning { border-color: color-mix(in srgb, var(--warning) 65%, var(--border)); }
.toast.error { border-color: color-mix(in srgb, var(--danger) 65%, var(--border)); }

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 30px; min-height: auto; padding-top: 58px; }
  .hero-visual { min-height: 390px; }
  .usecase-grid, .architecture-grid { grid-template-columns: repeat(2, 1fr); }
  .workspace-grid { grid-template-columns: 1fr; }
  .control-panel { min-height: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  .map-panel { min-height: 620px; }
}

@media (max-width: 650px) {
  .section-shell { width: min(100% - 24px, var(--content)); }
  .section-block { padding: 66px 0; }
  .topbar { min-height: 64px; padding: 8px 12px; }
  .brand small { display: none; }
  .top-actions .btn:last-child { display: none; }
  .hero { padding-top: 42px; padding-bottom: 60px; }
  .hero-copy h1 { font-size: clamp(45px, 15vw, 66px); }
  .hero-visual { min-height: 330px; }
  .floating-card { max-width: 190px; }
  .fc-one { right: 0; top: 16px; }
  .fc-two { left: 0; bottom: 10px; }
  .route-card-main { padding: 17px; }
  .usecase-grid, .architecture-grid { grid-template-columns: 1fr; }
  .workspace-section { padding: 62px 0; }
  .workspace-header { align-items: flex-start; flex-direction: column; }
  .workspace-status { justify-content: flex-start; }
  .control-panel { padding: 19px 15px; }
  .map-panel { min-height: 62vh; }
  .map-toolbar { top: 8px; left: 8px; right: 8px; align-items: flex-start; }
  .map-status-copy { max-width: calc(100% - 94px); font-size: 13px; }
  .map-toolbar .icon-btn { width: 42px; height: 42px; }
  .two-col-fields { grid-template-columns: 1fr; }
  .search-row { display: grid; }
  .search-row .btn { width: 100%; }
  .segmented { overflow-x: auto; grid-template-columns: repeat(3, minmax(100px, 1fr)); }
  .route-mode-picker { grid-template-columns: 1fr; }
  .footer { align-items: flex-start; flex-direction: column; }
  .footer p { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

/* offline GPS and advanced controls */
.offline-cockpit { margin-top: 14px; padding: 16px; border: 1px solid color-mix(in srgb, var(--accent) 42%, var(--border)); border-radius: 16px; background: linear-gradient(145deg, var(--surface-2), var(--accent-soft)); }
.coordinate-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 12px 0; }
.coordinate-grid span { min-width: 0; padding: 11px; border-radius: 12px; background: var(--surface); }
.coordinate-grid small, .coordinate-grid strong { display: block; }
.coordinate-grid small { color: var(--muted); font-size: 11px; }
.coordinate-grid strong { overflow: hidden; font-size: 16px; text-overflow: ellipsis; }
.advanced-box { margin-top: 18px; padding: 13px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface-2); }
.advanced-box summary { cursor: pointer; font-weight: 800; }
@media (max-width: 440px) { .coordinate-grid { grid-template-columns: 1fr; } }

/* v0.3 chapters, stage profiles, elevation and autonomy */
.three-col-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.unit-input { position: relative; }
.unit-input input { padding-right: 48px; }
.unit-input em { position: absolute; right: 13px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 12px; font-style: normal; font-weight: 800; pointer-events: none; }
.summary-grid.three { grid-template-columns: repeat(3, 1fr); }
.vehicle-profile-box > summary { padding: 4px 2px 10px; }
.chapter-list { display: grid; gap: 12px; margin-top: 14px; }
.chapter-card { padding: 14px; border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--border)); border-radius: 17px; background: color-mix(in srgb, var(--surface-2) 78%, var(--accent-soft)); }
.chapter-head { display: grid; grid-template-columns: 1fr 40px; align-items: end; gap: 8px; }
.chapter-head label { margin: 0; }
.chapter-head input { min-height: 43px; font-size: 16px; font-weight: 820; }
.chapter-stats { display: flex; flex-wrap: wrap; gap: 7px; margin: 10px 0; }
.chapter-stats span { padding: 5px 8px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); color: var(--muted); font-size: 11px; font-weight: 800; }
.stage-list { display: grid; gap: 9px; }
.stage-card { padding: 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); }
.stage-title, .stage-footer, .chapter-actions { display: flex; align-items: center; justify-content: space-between; gap: 9px; }
.stage-title b { font-size: 14px; }
.stage-point-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.stage-card label { margin-top: 9px; }
.stage-card select { min-height: 42px; padding: 8px 10px; font-size: 12px; }
.stage-footer { margin-top: 11px; }
.stage-footer span { color: var(--muted); font-size: 11px; font-weight: 750; }
.chapter-actions { margin-top: 10px; justify-content: flex-start; flex-wrap: wrap; }

@media (max-width: 650px) {
  .three-col-fields, .summary-grid.three { grid-template-columns: 1fr; }
  .stage-point-grid { grid-template-columns: 1fr; }
  .stage-footer { align-items: stretch; flex-direction: column; }
  .stage-footer .btn { width: 100%; }
}
.elevation-profile { display: block; width: 100%; height: 90px; margin-top: 12px; border-radius: 12px; background: var(--surface); }
.elevation-fill { fill: color-mix(in srgb, var(--accent) 20%, transparent); }
.elevation-line { fill: none; stroke: var(--accent-strong); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.map-marker { display: grid; min-width: 36px; height: 36px; place-items: center; padding: 0 8px; border: 3px solid #063f3b; border-radius: 12px 12px 12px 3px; background: var(--accent); color: #063f3b; box-shadow: 0 5px 15px rgba(0,0,0,.22); font-weight: 900; cursor: grab; }
.map-marker.start { background: #fff; }
.map-marker.end { background: #ffd166; }

/* v0.4 prepper/security additions */
.prepper-banner{position:sticky;top:64px;z-index:35;display:flex;gap:12px;align-items:center;justify-content:center;padding:10px 18px;background:#062f2c;color:#effffb;border-bottom:1px solid rgba(20,203,180,.45);font-size:14px}.prepper-banner b{color:#39e7cd}.prepper-banner span{opacity:.92}.prepper-card{border:1px solid rgba(20,203,180,.45);background:linear-gradient(135deg,rgba(20,203,180,.12),rgba(20,203,180,.04))}.prepper-card.active{border-color:#14cbb4;box-shadow:0 0 0 3px rgba(20,203,180,.11)}.compact-switch{min-width:58px;padding:0!important;background:none!important;border:0!important}.privacy-box{display:block;margin:10px 0 16px}.privacy-box ul{margin:8px 0 0 18px;padding:0}.privacy-box li{margin:4px 0}.privacy-box .blocked{color:#d84949}.privacy-box .available{color:#078e7f}.offline-map-card{align-items:flex-start}.offline-map-card .file-button{width:auto;min-width:100px}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.network-disabled{opacity:.48;pointer-events:none;filter:grayscale(.2)}.status-pill.prepper{background:#073d38;color:#dcfff9;border-color:#14cbb4}.status-pill.online-features{background:rgba(20,203,180,.12);color:var(--text)}
@media(max-width:720px){.prepper-banner{top:58px;align-items:flex-start;justify-content:flex-start;padding:9px 14px}.prepper-banner span{line-height:1.35}.offline-map-card{display:block}.offline-map-card .file-button{margin-top:10px;width:100%}}

.privacy-disclosure{margin:12px 0 18px;border:1px solid var(--line);border-radius:16px;padding:12px 14px;background:var(--surface-2)}
.privacy-disclosure summary{cursor:pointer;font-weight:800}
.privacy-table{display:grid;gap:10px;margin-top:12px}
.privacy-table p{display:grid;grid-template-columns:minmax(120px,.42fr) 1fr;gap:12px;margin:0;padding-bottom:10px;border-bottom:1px solid var(--line)}
.privacy-table p:last-child{border-bottom:0}
.privacy-table span{font-size:.9rem;line-height:1.45;color:var(--muted)}
@media(max-width:620px){.privacy-table p{grid-template-columns:1fr;gap:3px}}
.pack-list{display:grid;gap:.55rem;margin:.65rem 0}.pack-item{display:flex;justify-content:space-between;gap:.75rem;align-items:center;padding:.65rem .75rem;border:1px solid var(--border);border-radius:12px;background:var(--surface-2)}.pack-item small{display:block;color:var(--muted)}.country-checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.35rem .75rem;margin-top:.75rem}.country-checklist label{display:flex;gap:.45rem;align-items:center;margin:0}.country-checklist input{width:auto}.network-disabled{opacity:.62}.signal-code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.72rem}@media(min-width:720px){.country-checklist{grid-template-columns:repeat(3,minmax(0,1fr))}}