:root {
    --ocean: #b3d9ec;
    --ocean-deep: #9fcbe2;
    --land: #f3efe6;
    --land-stroke: #cdbfa6;
    --ink: #1c2b36;
    --panel: #ffffff;
    --accent: #ffd24a;
    --topbar-h: 60px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--ink);
    background: var(--ocean);
    overflow: hidden;
}

#app { display: flex; flex-direction: column; height: 100vh; }

/* ---------- Top bar ---------- */
#topbar {
    min-height: var(--topbar-h);
    flex: 0 0 auto;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 8px 12px;
    padding: 8px 12px;
    background: var(--ink);
    color: #fff;
    z-index: 50;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    flex-wrap: wrap;
    align-content: flex-start;
    max-width: 100%;
    overflow: visible;
}

.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 1.1rem; white-space: nowrap; }
.brand .logo { width: 30px; height: 30px; flex: 0 0 auto; filter: drop-shadow(0 1px 2px rgba(0,0,0,0.35)); }
.brand .brand-text span { color: var(--accent); }

.search-wrap { position: relative; width: 250px; flex: 1 1 180px; min-width: 120px; max-width: 420px; }

#search {
    width: 100%;
    padding: 9px 14px;
    border: none;
    border-radius: 8px;
    font-size: 0.92rem;
    background: #2c3e4c;
    color: #fff;
    outline: none;
    transition: box-shadow 0.15s, background 0.15s;
}
#search::placeholder { color: #93a6b2; }
#search:focus { background: #34495a; box-shadow: 0 0 0 2px var(--accent); }

.suggestions {
    position: absolute;
    top: calc(100% + 6px);
    left: 0; right: 0;
    background: var(--panel);
    color: var(--ink);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    max-height: 320px;
    overflow-y: auto;
    display: none;
    z-index: 60;
}
.suggestions.open { display: block; }
.suggestion {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
    gap: 10px;
}
.suggestion small { color: #8a97a0; font-variant-numeric: tabular-nums; }
.suggestion:hover, .suggestion.active { background: #eef4f8; }

/* ---------- Chips ---------- */
.chips {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1 1 100%;
    width: 100%;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    flex-wrap: nowrap;
    padding: 2px 0 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}
.chips:empty { display: none; }

.chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 5px 8px 5px 11px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}
.chip .chip-area { font-weight: 400; opacity: 0.92; font-variant-numeric: tabular-nums; }
.chip .chip-remove {
    display: inline-flex; align-items: center; justify-content: center;
    width: 18px; height: 18px; border-radius: 50%;
    background: rgba(0, 0, 0, 0.25); cursor: pointer; font-size: 0.9rem; line-height: 1;
}
.chip .chip-remove:hover { background: rgba(0, 0, 0, 0.45); }

.chip-more {
    background: #2c3e4c;
    color: #e6eef3;
    border: 1px solid #3f5666;
    cursor: pointer;
}
.chip-more:hover { background: #38505f; }
.chip-more .caret { opacity: 0.8; }

.chips-menu {
    min-width: 220px;
    max-height: 320px;
    overflow-y: auto;
    padding: 4px 0;
}
.chips-menu-row {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 12px;
    font-size: 0.85rem;
    color: var(--ink);
}
.chips-menu-row:hover { background: #eef4f8; }
.chips-menu-row .dot { width: 11px; height: 11px; border-radius: 50%; flex: 0 0 auto; }
.chips-menu-row .nm { font-weight: 600; }
.chips-menu-row .ar { margin-left: auto; color: #8a97a0; font-variant-numeric: tabular-nums; }
.chips-menu-row .chip-remove {
    display: inline-flex; align-items: center; justify-content: center;
    width: 18px; height: 18px; border-radius: 50%;
    background: #e7edf1; color: #5a6b76; cursor: pointer; font-size: 0.95rem; line-height: 1;
}
.chips-menu-row .chip-remove:hover { background: #e6194b; color: #fff; }

/* ---------- Toolbar ---------- */
.toolbar {
    display: flex; flex-direction: column; gap: 8px;
    flex: 1 1 100%; width: 100%; min-width: 0;
    max-width: 100%;
}
.toolbar-primary {
    display: flex; flex-wrap: wrap; align-items: flex-end; gap: 8px;
    width: 100%; min-width: 0;
}
.toolbar-primary > * { flex: 0 0 auto; }

.sel { display: flex; flex-direction: column; font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.06em; color: #93a6b2; gap: 3px; }
.sel select {
    background: #2c3e4c; color: #fff; border: 1px solid #3f5666;
    border-radius: 7px; padding: 7px 10px; font-size: 0.82rem; line-height: 1.2; cursor: pointer; outline: none;
    width: auto;
    max-width: 11rem;
}
.sel select:focus { box-shadow: 0 0 0 2px var(--accent); }

.tbtn {
    padding: 7px 10px;
    border: 1px solid #3f5666;
    background: #2c3e4c;
    color: #e6eef3;
    border-radius: 7px;
    font-size: 0.82rem;
    line-height: 1.2;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    white-space: nowrap;
}
.tbtn:hover { background: #38505f; }
/* Toggle on (Borders, By continent, Compare, Animate…) — not the brand yellow */
.tbtn.active {
    background: #4d6578; color: #fff; border-color: #6a8fa8;
    box-shadow: inset 0 -3px 0 var(--accent);
}
.tbtn.outline { background: transparent; }
.tbtn.outline:hover { background: #2c3e4c; }

.menu-wrap { position: relative; }
.menu {
    position: absolute; top: calc(100% + 6px); right: 0;
    background: var(--panel); color: var(--ink);
    border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,0.25);
    overflow: hidden; display: none; z-index: 70; min-width: 150px;
}
.menu.open { display: block; }
.menu div { padding: 10px 14px; cursor: pointer; font-size: 0.85rem; }
.menu div:hover { background: #eef4f8; }

/* Desktop: one header row (logo + search + controls); chips only when needed */
@media (min-width: 900px) {
    #topbar {
        display: grid;
        grid-template-columns: auto minmax(140px, 1fr) minmax(0, auto);
        grid-template-areas: "brand search tools";
        align-items: center;
        padding: 6px 12px;
        gap: 6px 10px;
    }
    .brand { grid-area: brand; }
    .search-wrap { grid-area: search; width: 100%; max-width: none; }
    .toolbar { grid-area: tools; width: auto; flex: none; }
    .chips:not(:empty) {
        grid-area: chips;
        grid-column: 1 / -1;
        width: 100%;
    }
    #topbar:has(.chips:not(:empty)) {
        grid-template-areas:
            "brand search tools"
            "chips chips chips";
    }
    .toolbar-primary { flex-wrap: nowrap; }
}

/* ---------- Map ---------- */
#map-wrap { position: relative; flex: 1 1 auto; min-height: 0; overflow: hidden; }

.raster-layer {
    position: absolute; inset: 0; z-index: 0; overflow: hidden;
    pointer-events: none; display: none; transform-origin: 0 0;
}
#map { position: relative; z-index: 1; }

#map-wrap.map-style-paper { --ocean: #e8e2d4; --ocean-deep: #ddd6c6; --land: #f7f3ea; --land-stroke: #c4b8a0; }
#map-wrap.map-style-dark { --ocean: #2a3d4f; --ocean-deep: #243545; --land: #3d5163; --land-stroke: #5a7085; }
#map-wrap.map-style-midnight { --ocean: #0f1820; --ocean-deep: #0a1218; --land: #2c3a48; --land-stroke: #4a6278; }

#map-wrap.map-style-dark #map,
#map-wrap.map-style-midnight #map { background: radial-gradient(ellipse at 50% 0%, var(--ocean) 0%, var(--ocean-deep) 100%); }
#map-wrap.map-style-dark #map.proj-orthographic,
#map-wrap.map-style-midnight #map.proj-orthographic {
    background: radial-gradient(ellipse at 50% 40%, #243545 0%, #0a1218 100%);
}

#map-wrap.tiles-active .country { fill-opacity: 0.22; stroke-width: 0.6; }
#map-wrap.tiles-active .graticule { stroke-opacity: 0.12; }
#map-wrap.tiles-active .ocean-sphere { fill-opacity: 0.15; }

.credit #tile-credit:empty { display: none; }

/* ---------- Compare projections mode ---------- */
#compare-wrap { display: none; position: absolute; inset: 0; background: #0a121a; z-index: 5; }
#compare-wrap.show { display: flex; gap: 2px; }
#map-wrap.comparing #map,
#map-wrap.comparing #info,
#map-wrap.comparing #hint,
#map-wrap.comparing .credit { display: none; }
.cmp-panel { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; }
.cmp-head { display: flex; align-items: center; justify-content: center; padding: 6px; background: #16242e; }
.cmp-proj {
    background: #2c3e4c; color: #fff; border: 1px solid #3f5666;
    border-radius: 7px; padding: 6px 10px; font-size: 0.82rem; cursor: pointer; outline: none;
}
.cmp-svg { flex: 1 1 auto; width: 100%; min-height: 0; display: block; }
@media (max-width: 700px) { #compare-wrap.show { flex-direction: column; } }

#map {
    width: 100%; height: 100%; display: block; cursor: grab;
    background: radial-gradient(ellipse at 50% 0%, var(--ocean) 0%, var(--ocean-deep) 100%);
}
#map.panning { cursor: grabbing; }
#map.proj-orthographic {
    background: radial-gradient(ellipse at 50% 40%, #20364a 0%, #0d1722 100%);
}
#map.rotating { cursor: grabbing; }

.ocean-sphere { fill: var(--ocean); stroke: #7fb2cc; stroke-width: 0.75; }
.graticule { fill: none; stroke: #ffffff; stroke-opacity: 0.45; stroke-width: 0.5; }
.proj-orthographic .graticule { stroke-opacity: 0.25; }

.country { fill: var(--land); stroke: var(--land-stroke); stroke-width: 0.4; cursor: pointer; transition: fill 0.12s; }
#map:not(.borders-off) .country { stroke: #9a8b72; stroke-width: 0.85; }
#map.borders-off .country { stroke-width: 0.2; stroke-opacity: 0.3; }
.country:hover { fill: #fffdf6; }

.ghost { fill: none; stroke-width: 1; stroke-dasharray: 4 3; pointer-events: none; opacity: 0.85; }

.movable { cursor: grab; stroke: #ffffff; stroke-width: 1; fill-opacity: 0.72; }
.movable.dragging { cursor: grabbing; fill-opacity: 0.85; }

.movable-label {
    pointer-events: none; font-size: 12px; font-weight: 700; fill: #ffffff;
    paint-order: stroke; stroke: rgba(0, 0, 0, 0.55); stroke-width: 3px; text-anchor: middle;
}

/* ---------- Overlays ---------- */
.hint {
    position: absolute; left: 16px; bottom: 16px; max-width: 320px;
    background: rgba(28, 43, 54, 0.9); color: #fff; padding: 12px 14px;
    border-radius: 10px; font-size: 0.82rem; line-height: 1.45;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3); transition: opacity 0.4s;
    z-index: 4;
}
.hint.hidden { opacity: 0; pointer-events: none; }
.hint-btn {
    display: block; margin-top: 10px; width: 100%;
    padding: 8px 12px; border: 1px solid rgba(255, 213, 74, 0.55); border-radius: 8px;
    background: rgba(255, 213, 74, 0.15); color: var(--accent); font-size: 0.82rem;
    font-weight: 700; cursor: pointer; text-align: center;
}
.hint-btn:hover { background: rgba(255, 213, 74, 0.28); }

/* More tools: fixed panel below header — snug buttons, wraps to content width */
.toolbar-advanced {
    display: none;
    position: fixed;
    top: var(--topbar-offset, 56px);
    left: 12px;
    right: auto;
    z-index: 90;
    width: max-content;
    max-width: calc(100vw - 24px);
    flex-wrap: wrap;
    gap: 6px;
    align-items: flex-end;
    padding: 8px 10px;
    background: #1a2832;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 10px;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
    max-height: min(11rem, 32vh);
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}
body.show-advanced-tools .toolbar-advanced { display: flex; }
.toolbar-advanced .menu-wrap { position: relative; flex: 0 0 auto; }
.toolbar-advanced .tbtn {
    width: auto;
    padding: 6px 10px;
    font-size: 0.76rem;
    min-height: 0;
}
.toolbar-advanced .sel { flex: 0 0 auto; font-size: 0.55rem; }
.toolbar-advanced .sel select {
    width: auto;
    max-width: 9rem;
    padding: 6px 10px;
    font-size: 0.76rem;
    min-height: 0;
}
.toolbar-advanced-end {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: flex-end;
    margin-left: auto;
}

/* Compare mode: slim header — projection pickers are in the compare panels */
body.compare-mode .chips { display: none; }
body.compare-mode .search-wrap { flex: 1 1 140px; max-width: 280px; }
body.compare-mode .toolbar-primary > *:not(#compare-btn):not(#more-tools-btn) { display: none !important; }
body.compare-mode .toolbar-advanced { display: none !important; }
body.compare-mode #compare-btn::after { content: ' ✕'; font-weight: 700; opacity: 0.85; }

#examples-menu { min-width: 240px; }
#examples-menu strong { display: block; font-size: 0.88rem; }
#examples-menu small { color: #6b7a85; font-size: 0.75rem; }

.info {
    position: absolute; left: 16px; bottom: 16px; width: 290px; max-height: 60vh; overflow-y: auto;
    background: rgba(255, 255, 255, 0.96); color: var(--ink);
    padding: 12px 14px; border-radius: 10px; font-size: 0.82rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3); display: none; z-index: 5;
}
.info.show { display: block; }
.info h4 { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: #7a8a95; margin: 2px 0 8px; }
.info-head { display: flex; align-items: center; gap: 10px; }
.info-head h4 { margin: 2px 0; flex: 1 1 auto; }
.info-toggle {
    flex: 0 0 auto; border: 1px solid #d4dde2; background: #f4f7f8; color: #51626c;
    border-radius: 6px; padding: 2px 9px; font-size: 0.68rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.04em; cursor: pointer;
}
.info-toggle:hover { background: #e7edf0; color: var(--ink); }
.info.collapsed .info-body { display: none; }
.info.collapsed .info-head h4 { margin: 2px 0; }
.info .item { padding: 6px 0; border-bottom: 1px solid #eef1f3; }
.info .item:last-child { border-bottom: none; }
.info .top { display: flex; align-items: baseline; gap: 8px; }
.info .row { display: flex; align-items: baseline; gap: 8px; padding: 4px 0; border-bottom: 1px solid #eef1f3; }
.info .row:last-child { border-bottom: none; }
.info .dot { width: 11px; height: 11px; border-radius: 50%; flex: 0 0 auto; align-self: center; }
.info .nm { font-weight: 700; }
.info .meta { margin-left: auto; text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.info .note { margin: 3px 0 0 19px; font-size: 0.75rem; color: #7a8a95; line-height: 1.35; }
.info .note.nogap { margin: 0 0 6px 0; }
.info .mult { color: #c0392b; font-weight: 700; }
.info .ratios { margin-top: 8px; padding-top: 8px; border-top: 2px solid #e3e8eb; }

.credit {
    position: absolute; right: 12px; bottom: 10px; font-size: 0.72rem; color: #3d5566;
    background: rgba(255, 255, 255, 0.55); padding: 4px 8px; border-radius: 6px;
    pointer-events: none; z-index: 6;
}
.credit a {
    color: #1e6a99; pointer-events: auto; cursor: pointer;
    text-decoration: underline; text-underline-offset: 2px;
}
.credit a:hover { color: #155a82; }
.proj-orthographic ~ .credit { color: #cfe0ec; }
.proj-orthographic ~ .credit a { color: #9ecae8; }

.loader {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; color: var(--ink); background: var(--ocean); z-index: 40;
}
.loader.hidden { display: none; }

/* ---------- Quiz modal ---------- */
.modal {
    position: fixed; inset: 0; background: rgba(10, 18, 26, 0.72);
    display: none; align-items: center; justify-content: center; z-index: 200;
}
.modal.open { display: flex; }
.modal-card {
    position: relative; background: #fff; color: var(--ink); border-radius: 16px;
    padding: 28px 28px 22px; width: min(520px, 92vw); box-shadow: 0 20px 60px rgba(0,0,0,0.4);
    text-align: center;
}
.modal-card h2 { font-size: 1.5rem; margin-bottom: 4px; }
.quiz-badge {
    display: inline-block; margin-bottom: 8px; padding: 3px 10px; border-radius: 999px;
    background: #e8f4fc; color: #1e6a99; font-size: 0.68rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em;
}
.quiz-sub { color: #6b7a85; margin-bottom: 18px; font-size: 0.9rem; line-height: 1.45; }
.modal-close {
    position: absolute; top: 12px; right: 14px; border: none; background: none;
    font-size: 1.6rem; line-height: 1; cursor: pointer; color: #9aa7b0;
}
.modal-close:hover { color: var(--ink); }
.quiz-options { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.quiz-opt {
    padding: 22px 12px; border: 2px solid #e0e6ea; border-radius: 12px; background: #f8fafb;
    font-size: 1.1rem; font-weight: 700; cursor: pointer; transition: all 0.12s;
}
.quiz-opt:hover:not(:disabled) { border-color: var(--ink); transform: translateY(-2px); }
.quiz-opt.correct { border-color: #2f9e44; background: #e7f6ea; }
.quiz-opt.wrong { border-color: #e6194b; background: #fdeaee; }
.quiz-opt:disabled { cursor: default; }
.quiz-result { min-height: 26px; margin: 16px 0 4px; font-size: 0.95rem; font-weight: 600; line-height: 1.45; }
.quiz-note { display: block; margin-top: 6px; font-size: 0.82rem; font-weight: 500; color: #6b7a85; }
.quiz-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }
#quiz-score { color: #6b7a85; font-variant-numeric: tabular-nums; }
.quiz-foot .tbtn {
    background: var(--ink); color: #fff; border-color: var(--ink);
}
.quiz-foot .tbtn:hover:not(:disabled) { background: #2a3d4a; }
.quiz-foot .tbtn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ---------- How it works modal ---------- */
.help-card { text-align: left; width: min(560px, 92vw); max-height: 86vh; overflow-y: auto; }
.help-card h2 { text-align: center; }
.help-card .quiz-sub { text-align: center; margin-bottom: 16px; }
.help-card h3 { font-size: 1rem; margin: 16px 0 6px; }
.help-body { font-size: 0.92rem; color: #41525c; line-height: 1.55; }
.help-body p { margin-bottom: 12px; }
.help-body ol { margin: 0; padding-left: 20px; }
.help-body li { margin-bottom: 9px; }
.help-body strong { color: var(--ink); }
.help-note { font-size: 0.84rem; color: #6b7a85; line-height: 1.55; }
.help-note a { color: #1e6a99; text-decoration: underline; text-underline-offset: 2px; }
.help-note a:hover { color: #155a82; }

/* ---------- Toast ---------- */
.toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
    background: var(--ink); color: #fff; padding: 11px 18px; border-radius: 8px;
    font-size: 0.88rem; opacity: 0; pointer-events: none; transition: all 0.25s; z-index: 300;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Embed mode (?embed=1) ---------- */
html.embed .brand-text,
html.embed .more-tools-btn,
html.embed #compare-btn,
html.embed .toolbar-advanced,
html.embed #hint,
html.embed #quiz-btn,
html.embed #topbar { padding: 6px 10px; gap: 8px; }
html.embed .search-wrap { flex: 1 1 140px; min-width: 0; }
html.embed .credit { font-size: 0.65rem; max-width: 55vw; }

/* ---------- Mobile & tablet ---------- */
@media (max-width: 1024px) {
    #topbar { padding: 8px 10px; gap: 8px; }
    .search-wrap { flex: 1 1 100%; width: 100%; max-width: none; }
    .toolbar-primary { gap: 6px; }
    .toolbar-advanced { max-height: min(13rem, 40vh); }
    .toolbar-primary .sel select { font-size: 0.78rem; padding: 10px 10px; min-height: 44px; }
    .toolbar-primary .tbtn { padding: 10px 12px; min-height: 44px; font-size: 0.8rem; }
}

@media (max-width: 900px) {
    #topbar { align-items: stretch; }
    .brand { font-size: 0.95rem; }
    .hint {
        left: 10px; right: 10px; bottom: 10px; max-width: none;
        font-size: 0.78rem; padding: 10px 12px;
    }
    .info {
        left: 10px; right: 10px; width: auto; max-height: 42vh;
        bottom: auto; top: 10px;
    }
    .info.show ~ .hint,
    body:has(.info.show) .hint { display: none; }
    .credit {
        left: 10px; right: 10px; bottom: 6px; max-width: none;
        text-align: center; font-size: 0.65rem; line-height: 1.35;
    }
    #map { touch-action: none; }
}

@media (max-width: 600px) {
    .brand-text { display: none; }
    .search-wrap { min-width: 0; }
    .toolbar-primary .sel { flex: 1 1 100%; }
    .toolbar-primary .sel select { width: 100%; max-width: none; }
    .toolbar-primary #compare-btn,
    .toolbar-primary #more-tools-btn { flex: 1 1 calc(50% - 6px); }
    .toolbar-advanced { left: 8px; max-width: calc(100vw - 16px); max-height: min(16rem, 50vh); }
}

@media (max-width: 480px) {
    .brand .logo { width: 26px; height: 26px; }
    .brand-text { display: none; }
    .quiz-options { grid-template-columns: 1fr; }
    .modal-card { padding: 22px 18px 18px; }
}