:root {
  --water: #d6ebee;
  --water-deep: #b9dce3;
  --land: #f1e6c8;
  --land-edge: #b89f6a;
  --ink: #12304a;
  --muted: #3f5a6b;
  --magenta: #a8326e;
  --contour: #7fb3c2;
  --paper: #fbf8ef;
  --serif: Palatino, "Palatino Linotype", "Book Antiqua", "URW Palladio L", Georgia, serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --gutter: clamp(16px, 4vw, 48px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); font: 400 1.0938rem/1.65 var(--serif);
  background:
    repeating-radial-gradient(ellipse 70% 50% at 10% 120%, transparent 0 34px, rgba(127, 179, 194, 0.35) 34px 35px),
    var(--water);
}
[hidden] { display: none !important; }
a { color: var(--magenta); text-underline-offset: 0.2em; }
h1, h2, h3 { margin: 0; font-weight: 400; font-style: italic; line-height: 1.1; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--magenta); outline-offset: 3px; }
.skip { position: absolute; left: var(--gutter); top: -80px; z-index: 20; background: var(--ink); color: var(--paper); padding: 0.6rem 1rem; }
.skip:focus { top: 12px; }

.site-header {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 1.5rem;
  padding: 14px var(--gutter); background: var(--land); border-bottom: 2px solid var(--land-edge);
}
.brand { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--ink); text-decoration: none; font-size: 1.35rem; letter-spacing: 0.02em; }
.brand svg { width: 32px; height: 32px; }
.brand i { color: var(--magenta); }
.site-header ul { display: flex; flex-wrap: wrap; gap: 0.25rem 1.4rem; margin: 0; padding: 0; list-style: none; }
.site-header nav a { color: var(--ink); text-decoration: none; font-variant: small-caps; letter-spacing: 0.08em; font-size: 1.05rem; }
.site-header nav a:hover { color: var(--magenta); }

/* Hero chart */
.hero { position: relative; min-height: clamp(420px, 62vh, 620px); display: grid; align-items: end; padding: clamp(24px, 5vw, 56px) var(--gutter); overflow: hidden; border-bottom: 2px solid var(--land-edge); }
.hero-chart { position: absolute; inset: 0; }
.hero-chart svg { width: 100%; height: 100%; display: block; }
.land { fill: var(--land); stroke: var(--land-edge); stroke-width: 2; }
.pier { fill: #d9c79c; stroke: var(--land-edge); }
.sounding { font: italic 13px var(--serif); fill: #4e7486; }
.moored path { fill: var(--paper); stroke: var(--ink); stroke-width: 2; }
.moored g { animation: bob 6s ease-in-out infinite; transform-box: fill-box; }
.moored g:nth-child(2) { animation-delay: -2s; }
.moored g:nth-child(3) { animation-delay: -4s; }
@keyframes bob { 50% { translate: 0 4px; } }
.rose-n { font: italic 18px var(--serif); fill: var(--magenta); }
.chart-note { font: 13px var(--serif); letter-spacing: 0.3em; fill: var(--magenta); text-anchor: middle; }
.hero-card {
  position: relative; max-width: 560px; background: var(--paper); border: 2px solid var(--ink); padding: clamp(20px, 4vw, 36px);
  box-shadow: 8px 8px 0 rgba(18, 48, 74, 0.18);
}
.eyebrow { font-variant: small-caps; letter-spacing: 0.14em; color: var(--magenta); font-size: 1.05rem; }
.hero h1 { font-size: clamp(2.4rem, 7vw, 4.4rem); margin: 0.4rem 0 0.9rem; }
.hero-card p:not(.eyebrow) { margin-bottom: 1.4rem; color: var(--muted); }
.btn { display: inline-flex; align-items: center; min-height: 48px; padding: 0.7rem 1.3rem; background: var(--ink); color: var(--paper); text-decoration: none; font-variant: small-caps; letter-spacing: 0.1em; font-size: 1.1rem; border: 2px solid var(--ink); }
.btn:hover { background: var(--magenta); border-color: var(--magenta); color: #fff; }

/* Notes */
.notes, .harbour-section, .rules { max-width: 1180px; margin: 0 auto; padding: clamp(48px, 7vw, 88px) var(--gutter); }
.notes h2, .section-head h2, .rules h2 { font-size: clamp(2rem, 5vw, 3.1rem); margin-bottom: 1.5rem; }
.legend-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.legend-grid article { background: var(--paper); border: 1.5px solid var(--ink); padding: 1.25rem; position: relative; }
.legend-grid article::before { content: ""; position: absolute; inset: 5px; border: 1px dashed var(--contour); pointer-events: none; }
.key-icon { width: 44px; height: 44px; fill: none; stroke: var(--magenta); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 0.4rem; }
.legend-grid h3 { font-size: 1.35rem; margin-bottom: 0.45rem; }
.legend-grid p { color: var(--muted); font-size: 1rem; }

/* Simulator */
.section-head p { max-width: 70ch; color: var(--muted); margin-top: -0.6rem; margin-bottom: 1.5rem; }
.controls { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 1rem 1.5rem; background: var(--land); border: 1.5px solid var(--land-edge); padding: 1rem 1.1rem; margin-bottom: 1rem; }
.field label { display: block; font-variant: small-caps; letter-spacing: 0.1em; margin-bottom: 0.25rem; }
.unit-input { display: flex; border: 1.5px solid var(--ink); background: var(--paper); }
.unit-input:focus-within { outline: 3px solid var(--magenta); outline-offset: 1px; }
.unit-input input { width: 9rem; border: 0; background: transparent; font: 600 1.05rem/1.2 var(--mono); padding: 0.5rem 0.6rem; color: var(--ink); }
.unit-input input:focus { outline: none; }
.unit-input span { display: grid; place-items: center; padding: 0 0.55rem; font: 0.8rem var(--mono); color: var(--muted); border-left: 1px solid var(--contour); }
.strategies { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.btn-small { font: italic 1rem/1 var(--serif); background: var(--paper); color: var(--ink); border: 1.5px solid var(--ink); padding: 0.6rem 0.85rem; cursor: pointer; }
.btn-small:hover { background: var(--ink); color: var(--paper); }
.btn-plain { border-style: dashed; }

/* Water scene */
.water { margin: 0 0 1rem; border: 2px solid var(--ink); background: var(--water); }
.water svg { display: block; width: 100%; height: auto; }
.w-sea { fill: var(--water-deep); }
.breakwater { fill: #c9b482; stroke: var(--land-edge); stroke-width: 2; }
.w-note { font: 600 12px var(--serif); letter-spacing: 0.2em; fill: var(--magenta); }
.water figcaption { padding: 0.6rem 0.9rem; border-top: 1.5px solid var(--ink); background: var(--paper); font-size: 0.95rem; color: var(--muted); }
.water figcaption span:first-child { color: var(--ink); font-weight: 700; }
.key-sel { color: var(--magenta); font-weight: 700; }
.w-boat { cursor: pointer; transition: transform 1.1s cubic-bezier(0.45, 0, 0.25, 1), opacity 0.45s ease; }
.w-boat .turn { transition: transform 0.6s ease; }
.w-boat .bob { animation: drift 5s ease-in-out infinite; }
.w-boat:nth-child(3n) .bob { animation-delay: -1.6s; }
.w-boat:nth-child(3n+1) .bob { animation-delay: -3.2s; }
@keyframes drift { 50% { transform: translate(1.5px, 3px) rotate(2deg); } }
.w-boat .hull { fill: var(--paper); stroke: var(--ink); stroke-width: 2.4; vector-effect: non-scaling-stroke; }
.w-boat .deck { stroke: var(--contour); stroke-width: 1.5; }
.w-label { font: 600 13px var(--mono); fill: var(--ink); text-anchor: middle; paint-order: stroke; stroke: var(--water-deep); stroke-width: 3px; }
.w-boat:hover .hull { stroke: var(--magenta); }
.w-boat.is-dust .hull { fill: var(--land); stroke-dasharray: 4 3; }
.w-boat.is-selected .hull { fill: var(--magenta); stroke: var(--magenta); }
.w-boat.is-selected .w-label { fill: var(--magenta); }
.w-boat.spent { opacity: 0; }
.w-pay .hull { fill: var(--magenta); stroke: var(--ink); }
.w-change .hull { fill: #e3f3ea; stroke: #1e6046; }
.w-pay, .w-change { cursor: default; }
.sail-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; margin-top: 1rem; }
.sail-actions .btn { min-height: 44px; font-size: 1.05rem; cursor: pointer; }
.sail-actions .btn:disabled { opacity: 0.45; cursor: not-allowed; background: var(--ink); border-color: var(--ink); }
.boat:disabled { opacity: 0.6; cursor: wait; }

.harbour-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 1rem; align-items: start; }
.harbour {
  position: relative; display: grid; grid-template-columns: 54px minmax(0, 1fr); min-height: 380px;
  border: 2px solid var(--ink);
  background:
    repeating-radial-gradient(ellipse 60% 40% at 80% 50%, transparent 0 22px, rgba(127, 179, 194, 0.45) 22px 23px),
    var(--water-deep);
}
.pier { background: repeating-linear-gradient(0deg, #d9c79c 0 14px, #c9b482 14px 16px); border-right: 2px solid var(--land-edge); display: grid; place-items: center; }
.pier span { writing-mode: vertical-rl; transform: rotate(180deg); letter-spacing: 0.4em; font-size: 0.8rem; color: var(--ink); }
.boats { list-style: none; margin: 0; padding: 1rem; display: grid; grid-template-columns: repeat(auto-fill, minmax(116px, 1fr)); gap: 0.6rem; align-content: start; }
.boat {
  width: 100%; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 0.5rem; text-align: left;
  background: rgba(251, 248, 239, 0.88); border: 1.5px solid var(--ink); padding: 0.45rem 0.55rem; cursor: pointer; color: var(--ink);
  font: 400 0.92rem/1.25 var(--serif); transition: transform 0.35s ease, background 0.2s ease;
}
.boat svg { width: var(--w, 28px); height: auto; flex: none; }
.boat svg path { fill: var(--paper); stroke: var(--ink); stroke-width: 2; }
.boat .b-name { display: block; font-style: italic; font-size: 0.82rem; color: var(--muted); }
.boat .b-val { display: block; font: 600 0.9rem/1.2 var(--mono); }
.boat:hover { background: var(--paper); }
.boat[aria-pressed="true"] { background: #fbe9f2; border-color: var(--magenta); box-shadow: 0 0 0 2px var(--magenta); transform: translateX(6px); }
.boat[aria-pressed="true"] svg path { fill: var(--magenta); stroke: var(--magenta); }
.boat.is-dust { border-style: dashed; background: rgba(241, 230, 200, 0.85); }
.boat.is-dust .b-name::after { content: " · dust"; color: var(--magenta); font-style: normal; font-weight: 700; }

.manifest { background: var(--paper); border: 2px solid var(--ink); padding: 1.1rem 1.2rem; position: sticky; top: 16px; }
.manifest h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
.manifest dl { margin: 0; }
.manifest dl div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.45rem 0; border-bottom: 1px dashed var(--contour); }
.manifest dt { font-variant: small-caps; letter-spacing: 0.06em; }
.manifest dd { margin: 0; font: 600 0.95rem/1.4 var(--mono); text-align: right; }
.status { margin-top: 0.9rem; min-height: 3em; font-style: italic; }
.status.ok { color: #1e6046; }
.status.bad { color: var(--magenta); }
.dust-note { margin-top: 0.5rem; font-size: 0.95rem; color: var(--muted); }

.rules ol { list-style: none; margin: 0; padding: 0; counter-reset: r; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem 2rem; }
.rules li { counter-increment: r; display: grid; grid-template-columns: 3rem minmax(0, 1fr); gap: 0 1rem; padding: 1rem 0; border-top: 1.5px solid var(--ink); }
.rules li::before { content: counter(r); grid-row: span 2; width: 2.6rem; height: 2.6rem; border-radius: 50%; border: 2px solid var(--magenta); color: var(--magenta); display: grid; place-items: center; font: italic 1.3rem var(--serif); }
.rules h3 { font-size: 1.35rem; }
.rules p { color: var(--muted); }

.site-footer { background: var(--land); border-top: 2px solid var(--land-edge); padding: 1.5rem var(--gutter) 2rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; font-size: 0.98rem; }
.site-footer i { color: var(--magenta); }

@media (max-width: 1000px) {
  .legend-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .harbour-grid { grid-template-columns: 1fr; }
  .manifest { position: static; }
}
@media (max-width: 600px) {
  .legend-grid, .rules ol { grid-template-columns: 1fr; }
  .harbour { grid-template-columns: 32px minmax(0, 1fr); }
  .boats { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 0.6rem; }
  .unit-input input { width: 7.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .boat[aria-pressed="true"] { transform: none; }
}