:root {
    color-scheme: light;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #20302b;
    background: #f4f7f5;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    --terrain-ink: #20302b;
    --terrain-muted: #64736c;
    --terrain-line: #dce5df;
    --terrain-paper: #fff;
    --terrain-green: #216b4b;
    --terrain-green-dark: #19563b;
    --terrain-green-soft: #e8f3ec;
    --terrain-red: #a53d36;
    --terrain-shadow: 0 12px 32px rgb(25 61 44 / 7%);
}

*, *::before, *::after { box-sizing: border-box; }
body.tracktract-terrain { min-width: 320px; min-height: 100vh; margin: 0; background: #f4f7f5; color: var(--terrain-ink); font-size: 15px; line-height: 1.55; }
.terrain-header { position: relative; z-index: 500; display: flex; min-height: 60px; align-items: center; justify-content: space-between; gap: 16px; padding: 0 max(20px, calc((100vw - 1120px) / 2)); border-bottom: 1px solid var(--terrain-line); background: rgb(255 255 255 / 96%); }
.terrain-brand { color: var(--terrain-ink) !important; font-size: 20px; font-weight: 750; letter-spacing: -.04em; text-decoration: none; }
.terrain-header nav { display: flex; align-items: center; gap: 12px; }
.terrain-header nav > a { color: var(--terrain-muted); font-size: 14px; font-weight: 600; text-decoration: none; }
.terrain-header form { margin: 0; }
.terrain-header button { min-height: 38px; padding: 7px 12px; border: 1px solid var(--terrain-line); border-radius: 8px; background: #fff; color: #42534b; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; }
.terrain-header button:hover { border-color: #aec6b7; background: #f7faf8; color: var(--terrain-green-dark); }
.terrain-main { width: min(1120px, 100%); margin: 0 auto; padding: 28px 20px 40px; }
h1, h2, p { margin-top: 0; }
h1 { color: var(--terrain-ink); font-size: clamp(23px, 3vw, 30px); font-weight: 720; letter-spacing: -.035em; line-height: 1.2; }
.terrain-eyebrow { margin-bottom: 8px; color: var(--terrain-green); font-size: 12px; font-weight: 750; letter-spacing: .09em; text-transform: uppercase; }
.terrain-page-heading { margin: 8px 0 22px; }
.terrain-page-heading > p:last-child { margin: 8px 0 0; color: var(--terrain-muted); }
.terrain-flash { margin: 14px auto; padding: 12px 15px; border: 1px solid #ecd18c; border-radius: 10px; background: #fff8e4; color: #674f16; }
.terrain-flash[role="alert"] { border-color: #efc2be; background: #fff1ef; color: #8b302b; }

.terrain-login { width: min(100%, 420px); margin: clamp(42px, 10vh, 100px) auto 30px; padding: 32px; border: 1px solid #e7ede9; border-radius: 16px; background: var(--terrain-paper); box-shadow: var(--terrain-shadow); }
.terrain-login h1 { margin: 0 0 6px; font-size: 30px; }
.terrain-login-intro { margin-bottom: 24px; color: var(--terrain-muted); }
.terrain-login form { display: grid; gap: 9px; }
.terrain-login label { margin-top: 7px; color: #34473e; font-size: 14px; font-weight: 650; }
.terrain-login input { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid #cbd8d0; border-radius: 9px; outline: 0; background: #fff; color: var(--terrain-ink); font: inherit; transition: border-color .15s, box-shadow .15s; }
.terrain-login input:focus, .tracktract-terrain textarea:focus { border-color: #4c9270; box-shadow: 0 0 0 3px rgb(33 107 75 / 13%); }
.terrain-login > p:last-child { margin: 18px 0 0; color: var(--terrain-muted); font-size: 13px; }

.terrain-button, .tracktract-terrain .btn, .terrain-primary { display: inline-flex; min-height: 42px; align-items: center; justify-content: center; gap: 8px; padding: 9px 15px; border: 1px solid transparent; border-radius: 9px; font: inherit; font-size: 14px; font-weight: 650; line-height: 1.25; text-align: center; text-decoration: none; cursor: pointer; transition: background .15s, border-color .15s, color .15s, box-shadow .15s, transform .15s; }
.terrain-button-primary, .terrain-primary, .tracktract-terrain .btn-primary { border-color: var(--terrain-green); background: var(--terrain-green); color: #fff; }
.terrain-button-primary:hover, .terrain-primary:hover, .tracktract-terrain .btn-primary:hover { border-color: var(--terrain-green-dark); background: var(--terrain-green-dark); color: #fff; }
.terrain-button-secondary { border-color: var(--terrain-line); background: #fff; color: #41534a; }
.terrain-button-secondary:hover { border-color: #aec6b7; background: #f8fbf9; color: var(--terrain-green-dark); }
.terrain-button:hover { transform: translateY(-1px); }
.tracktract-terrain .btn-default, .tracktract-terrain .btn-secondary { border-color: var(--terrain-line); background: #fff; color: #41534a; }
.tracktract-terrain .btn-default:hover, .tracktract-terrain .btn-secondary:hover { border-color: #aec6b7; background: #f8fbf9; color: var(--terrain-green-dark); }
.tracktract-terrain .btn-warning { border-color: #e7c77d; background: #fff8e4; color: #705516; }
.tracktract-terrain button:disabled, .tracktract-terrain .btn:disabled { opacity: .52; cursor: not-allowed; transform: none; }
.tracktract-terrain button:focus-visible, .tracktract-terrain a:focus-visible, .tracktract-terrain summary:focus-visible { outline: 3px solid rgb(33 107 75 / 28%); outline-offset: 2px; }

.terrain-campaign-list { display: grid; gap: 12px; max-width: 820px; }
.terrain-campaign-card { display: flex; align-items: center; justify-content: space-between; gap: 22px; padding: 20px 22px; border: 1px solid #e1e9e4; border-radius: 13px; background: var(--terrain-paper); box-shadow: 0 3px 12px rgb(25 61 44 / 3%); }
.terrain-campaign-copy { min-width: 0; }
.terrain-campaign-card h2 { margin: 0 0 5px; font-size: 18px; font-weight: 700; letter-spacing: -.02em; }
.terrain-campaign-card p { max-width: 620px; margin: 0 0 8px; color: var(--terrain-muted); font-size: 14px; }
.terrain-campaign-meta { display: flex; flex-wrap: wrap; gap: 6px 14px; color: var(--terrain-muted); font-size: 12px; }
.terrain-campaign-meta span + span::before { content: "·"; margin-right: 14px; color: #a0aea6; }
.terrain-campaign-card .terrain-button { flex: 0 0 auto; }
.terrain-empty-state { padding: 18px; border: 1px solid var(--terrain-line); border-radius: 12px; background: #fff; color: var(--terrain-muted); }

.terrain-map-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 8px; }
.terrain-map-heading h1 { margin: 0; font-size: 22px; }
.terrain-map-heading a { color: var(--terrain-green); font-size: 14px; font-weight: 650; text-decoration: none; }
.terrain-map-campaign { margin: 0 0 14px; color: var(--terrain-muted); font-size: 13px; }
.terrain-map-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 9px; margin: 14px 0 8px; }
.terrain-map-toolbar > a { text-decoration: none; }
.tracktract-map-tools { display: flex; max-width: calc(100vw - 90px); flex-wrap: wrap; gap: 6px; padding: 5px; border: 1px solid #dce5df; border-radius: 10px; background: rgb(255 255 255 / 96%); box-shadow: 0 2px 8px rgb(25 61 44 / 16%); }
.tracktract-map-tools .btn { display: inline-flex; width: 44px; min-width: 44px; height: 44px; min-height: 44px; align-items: center; justify-content: center; padding: 0; }
.tracktract-map-tools .btn .fa { font-size: 18px; line-height: 1; }
.tracktract-map-tools .fa[hidden] { display: none; }
.tracktract-map-tools .tracktract-location-toggle[aria-pressed="true"] { border-color: #2b6d9d; background: #2b6d9d; color: #fff; }
.tracktract-map-tools .tracktract-fullscreen-toggle[aria-pressed="true"] { border-color: #216b4b; background: #e8f3ec; color: #19563b; }
.tracktract-map-tools .tracktract-map-status,
.tracktract-map-tools .tracktract-progress-status { flex: 1 0 100%; width: 100%; margin: 0; padding: 6px 7px; font-size: 11px; line-height: 1.35; }
/* Keep the terrain controls above map features, but below Leaflet's segment popup (pane 700). */
.tracktract-terrain .leaflet-top.leaflet-right { z-index: 699; }
.tracktract-map-view:fullscreen,
.tracktract-map-view.is-fullscreen-fallback {
    position: fixed !important;
    inset: 0 !important;
    z-index: 1500 !important;
    display: block !important;
    width: 100vw !important;
    height: 100vh !important;
    height: 100dvh !important;
    max-width: none !important;
    min-height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden;
    border: 0 !important;
    border-radius: 0 !important;
    background: #e8efeb;
}
.tracktract-map-status, .tracktract-progress-status { min-height: 0; margin: 6px 0 10px; padding: 8px 11px; border-radius: 8px; background: #edf3ef; color: #52635a; font-size: 13px; }
.tracktract-map-status:empty, .tracktract-progress-status:empty { display: none; }
.tracktract-map-status.is-error, .tracktract-progress-status.is-error { border: 1px solid #efc2be; background: #fff1ef; color: var(--terrain-red); }
.tracktract-map-status.is-success, .tracktract-progress-status.is-success { border: 1px solid #c8e1d0; background: #edf8f0; color: #245c3d; }
.terrain-map-view, .tracktract-terrain .tracktract-map-view { width: 100%; height: min(70vh, 740px); min-height: 430px; overflow: hidden; border: 1px solid #d8e2dc; border-radius: 13px; background: #e8efeb; box-shadow: 0 5px 18px rgb(25 61 44 / 5%); }
.tracktract-map-road-hint { margin: 12px 0 8px; color: #485950; font-size: 13px; }
.tracktract-terrain .tracktract-map-legend { margin: 10px 0; padding: 0; overflow: hidden; border: 1px solid var(--terrain-line); border-radius: 10px; background: #fff; }
.terrain-legend-toggle { padding: 9px 13px; color: #46584f; font-size: 13px; font-weight: 650; cursor: pointer; }
.tracktract-terrain .tracktract-map-legend ul { padding: 0 13px 12px; }
.tracktract-terrain .tracktract-map-legend li { color: #46584f; font-size: 13px; }
.tracktract-terrain .tracktract-map-attribution-note { margin: 8px 0 0; color: #748178; font-size: 11px; line-height: 1.5; }
.tracktract-terrain .tracktract-map-attribution-note a { color: #466d57; }
.tracktract-terrain .leaflet-container { font: inherit; }
.tracktract-terrain .tracktract-road-popup { width: min(280px, calc(100vw - 74px)); color: var(--terrain-ink); font: inherit; }
.tracktract-terrain .tracktract-road-popup > strong { display: block; margin: 0 0 3px; font-size: 16px; }
.tracktract-terrain .tracktract-road-popup > div, .tracktract-terrain .tracktract-road-popup > small { color: #607168; font-size: 12px; }
.tracktract-terrain .tracktract-road-permission { display: block; margin-top: 5px; color: #8b302b; font-size: 12px; }
.tracktract-terrain .tracktract-road-permission[hidden],
.tracktract-terrain .tracktract-road-error[hidden] { display: none; }
.tracktract-terrain .tracktract-road-state { margin: 9px 0; padding: 7px 9px; border-radius: 7px; background: var(--terrain-green-soft); color: #285b40; font-size: 13px; }
.tracktract-terrain .tracktract-road-popup-actions { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 9px; }
.tracktract-terrain .tracktract-road-popup-actions .btn { display: inline-flex; width: 44px; min-width: 44px; height: 44px; min-height: 44px; flex: 0 0 44px; align-items: center; justify-content: center; padding: 0; font-size: 18px; }
.tracktract-terrain .tracktract-road-error { margin-top: 8px; color: var(--terrain-red); font-size: 13px; font-weight: 600; }
.terrain-invitations { margin: 0 0 22px; padding: 17px 19px; border: 1px solid #d4e4d9; border-radius: 12px; background: #fff; box-shadow: 0 4px 14px rgb(25 61 44 / 5%); }
.terrain-invitations h2 { margin: 0 0 12px; color: var(--terrain-ink); font-size: 17px; }
.terrain-invitations ul { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.terrain-invitations li { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px; border: 1px solid var(--terrain-line); border-radius: 9px; background: #f9fbfa; }
.terrain-invitations p { margin: 2px 0; color: var(--terrain-muted); font-size: 13px; }
.terrain-invitations small { color: var(--terrain-muted); font-size: 12px; }
.terrain-invitation-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.terrain-invitation-actions form { margin: 0; }
.tracktract-terrain .tracktract-road-invitation-actions { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 8px; }
.tracktract-terrain .tracktract-road-invitation-actions form { margin: 0; }
.tracktract-terrain .tracktract-road-invitation-actions .terrain-button { min-height: 40px; padding: 8px 12px; }

@media (max-width: 640px) {
    .terrain-header { min-height: 54px; padding: 0 14px; }
    .terrain-header nav { gap: 7px; }
    .terrain-header button { min-height: 40px; padding: 7px 9px; }
    .terrain-main { padding: 20px 14px 28px; }
    .terrain-login { margin: 7vh auto 20px; padding: 24px 21px; }
    .terrain-login h1 { font-size: 27px; }
    .terrain-campaign-card { align-items: stretch; flex-direction: column; gap: 14px; padding: 17px; }
    .terrain-campaign-card .terrain-button { width: 100%; min-height: 46px; }
    .terrain-invitations { padding: 14px; }
    .terrain-invitations li { align-items: stretch; flex-direction: column; gap: 11px; }
    .terrain-invitation-actions { display: grid; grid-template-columns: 1fr 1fr; }
    .terrain-invitation-actions .terrain-button { width: 100%; min-height: 44px; }
    .terrain-map-heading h1 { font-size: 19px; }
    .terrain-map-toolbar { align-items: stretch; flex-direction: column; }
    .terrain-map-toolbar > a, .terrain-map-toolbar > button { width: 100%; min-height: 44px; }
    .terrain-map-view, .tracktract-terrain .tracktract-map-view { height: calc(100dvh - 340px); min-height: 330px; margin: 0 -14px; width: calc(100% + 28px); border-right: 0; border-left: 0; border-radius: 0; }
    .tracktract-terrain .leaflet-popup-content-wrapper { border-radius: 11px; }
    .tracktract-terrain .leaflet-popup-content { margin: 13px; }
    .tracktract-terrain .tracktract-road-popup { width: min(270px, calc(100vw - 82px)); }
    .tracktract-terrain .tracktract-road-popup-actions .btn { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}