/* Brand styles, shared by every tool.
   A new tool only sets its own --tool colour (see body[data-tool]). */
:root {
  --brand: #27939d;
  --brand-deep: #0c2c2f;
  --brand-deep-2: #12393d;
  --brand-light: #5cc9d2;
  --foam: #f0f7f8;
  --paper: #ffffff;
  --ink: #0e1f21;
  --muted: #536a6d;
  --line: #d0e3e5;
  --line-soft: #e3eff0;
  --tool: var(--brand);

  --ok: #1f6b55;
  --ok-bg: #e3f3ee;
  --warn: #7a5a00;
  --warn-bg: #fff4d6;
  --err: #9d0a27;
  --err-bg: #fbe8ec;

  --radius: 10px;
  --radius-sm: 7px;
  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}
/* Tool colours */
body[data-tool="antifouling"] { --tool: #9d0a27; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--foam); color: var(--ink); font: 16px/1.55 var(--font); font-variant-numeric: tabular-nums; }

/* Header */
.hull { background: var(--brand-deep); color: #fff; }
.hull .inner { max-width: 860px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; }
.mark { width: 32px; height: 32px; border-radius: 9px; background: var(--brand); color: var(--brand-deep); display: grid; place-items: center; flex: none; }
.mark svg { width: 20px; height: 20px; }
.hull h1 { margin: 0; font-size: 1.12rem; font-weight: 600; letter-spacing: .015em; }
.hull .who { font-size: .88rem; color: #c9e3e6; }
.hull a, .hull button.linklike { color: #fff; }
/* Brand line, ending in the tool's own colour */
.brandline { height: 3px; background: linear-gradient(90deg, var(--brand) 0 86%, var(--tool) 86% 100%); }
/* kept for older markup */
.waterline { height: 3px; background: var(--brand); }

main { max-width: 860px; margin: 0 auto; padding: 26px 20px 72px; }
h2 { font-size: 1.22rem; font-weight: 600; margin: 0 0 4px; letter-spacing: .005em; }
h3 { font-size: 1rem; font-weight: 600; margin: 20px 0 8px; }
p.hint { color: var(--muted); margin: 0 0 16px; }

.steps { display: flex; gap: 8px; margin: 0 0 18px; padding: 0; list-style: none; font-size: .85rem; color: var(--muted); }
.steps li { display: flex; align-items: center; gap: 8px; }
.steps li::after { content: ""; width: 18px; height: 1px; background: var(--line); }
.steps li:last-child::after { display: none; }
.steps li.now { color: var(--brand-deep); font-weight: 600; }
.steps li.now::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); }

.panel { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 16px; }

label { display: block; font-weight: 600; font-size: .9rem; margin: 14px 0 5px; }
label .opt { font-weight: 400; color: var(--muted); }
input[type=text], input[type=number], input[type=password], input[type=date], select, textarea {
  width: 100%; padding: 10px 12px; font: inherit; color: inherit; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius-sm); transition: border-color .15s;
}
input:hover, select:hover, textarea:hover { border-color: #a9cdd1; }
input:focus, select:focus, textarea:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 3px rgba(39, 147, 157, .18); }
textarea { min-height: 76px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 16px; }
@media (max-width: 560px) { .grid2, .grid3 { grid-template-columns: 1fr; } }

.choice { display: flex; gap: 8px; flex-wrap: wrap; }
.choice label { font-weight: 400; margin: 0; display: inline-flex; align-items: center; gap: 7px; padding: 8px 13px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fff; cursor: pointer; }
.choice label:has(input:checked) { border-color: var(--brand); background: #eaf6f7; color: var(--brand-deep); }
.choice input { margin: 0; accent-color: var(--brand); }

.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; align-items: center; }
button, .button { font: inherit; font-weight: 600; font-size: .95rem; padding: 10px 18px; border-radius: var(--radius-sm); border: 1px solid var(--brand-deep); background: var(--brand-deep); color: #fff; cursor: pointer; text-decoration: none; display: inline-block; transition: background .15s, border-color .15s; }
button:hover, .button:hover { background: var(--brand-deep-2); }
button.secondary, .button.secondary { background: #fff; color: var(--brand-deep); border-color: var(--line); }
button.secondary:hover { border-color: var(--brand); background: #f6fbfb; }
button.danger { background: #fff; color: var(--err); border-color: #e6b8c1; }
button.big { padding: 18px 20px; font-size: 1.05rem; flex: 1 1 220px; text-align: left; border-radius: var(--radius); }
button.big small { display: block; font-weight: 400; font-size: .85rem; opacity: .8; margin-top: 2px; }
button:disabled { opacity: .45; cursor: not-allowed; }
button.linklike { background: none; border: none; padding: 0; font-weight: 400; text-decoration: underline; color: var(--brand-deep); }
:focus-visible { outline: 3px solid var(--brand-light); outline-offset: 2px; }

.msg { padding: 11px 13px; border-radius: var(--radius-sm); margin: 12px 0; }
.msg.error { background: var(--err-bg); color: var(--err); }
.msg.warn { background: var(--warn-bg); color: var(--warn); }
.msg.ok { background: var(--ok-bg); color: var(--ok); }

dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 5px 20px; margin: 0; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
th { font-size: .82rem; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; }
.scroll { overflow-x: auto; }

/* Result */
.result-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.chip { display: inline-block; font-size: .78rem; font-weight: 600; padding: 2px 9px; border-radius: 20px; background: #e6f3f4; color: var(--brand-deep); border: 1px solid var(--line); }
.sub { color: var(--muted); font-size: .9rem; margin: 2px 0 14px; }
.lyr { border-top: 1px solid var(--line-soft); padding: 12px 0; display: grid; grid-template-columns: 1fr auto; gap: 2px 16px; }
.lyr .n { font-weight: 600; }
.lyr .n small { font-weight: 400; color: var(--muted); }
.lyr .m { color: var(--muted); font-size: .88rem; grid-column: 1; }
.lyr .p { text-align: right; font-weight: 600; white-space: nowrap; }
.sumrow { border-top: 1px solid var(--line-soft); padding-top: 10px; display: grid; grid-template-columns: 1fr auto; gap: 4px 16px; font-size: .95rem; }
.sumrow span:nth-child(odd) { color: var(--muted); }
.sumrow span:nth-child(even) { text-align: right; }
.layer { border-top: 1px solid var(--line-soft); padding-top: 12px; margin-top: 12px; }
.layer h3 { margin-top: 0; }
.totals { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.total { border-radius: var(--radius); padding: 14px 16px; }
.total .label { font-size: .85rem; }
.total .value { font-size: 1.6rem; font-weight: 650; letter-spacing: -.01em; }
.total.cost { background: #fff; border: 1px solid var(--line); }
.total.cost .label { color: var(--muted); }
.total.client { background: var(--brand-deep); color: #c9e3e6; }
.total.client .value { color: var(--brand-light); }
@media (max-width: 480px) { .totals { grid-template-columns: 1fr; } }
.money { white-space: nowrap; }

.tag { display: inline-block; font-size: .78rem; padding: 2px 9px; border-radius: 20px; background: #e6f3f4; color: var(--brand-deep); margin: 0 4px 4px 0; }
.tag.alert { background: var(--err-bg); color: var(--err); }
.tag.note { background: var(--warn-bg); color: var(--warn); }

nav.tabs { display: flex; gap: 2px; flex-wrap: wrap; margin-bottom: 18px; border-bottom: 1px solid var(--line); }
nav.tabs button { background: none; color: var(--muted); border: none; border-bottom: 3px solid transparent; border-radius: 0; padding: 9px 12px; font-weight: 600; }
nav.tabs button:hover { color: var(--brand-deep); background: none; }
nav.tabs button[aria-selected=true] { color: var(--brand-deep); border-bottom-color: var(--brand); }

details summary { cursor: pointer; padding: 4px 0; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }