:root {
  --bg: #fcfbf8; --fg: #1a1714; --muted: #6b655d; --line: #e9e4db;
  --card: #f5f2ec; --accent: #2563eb; --accent-fg: #ffffff;
  --ok: #15803d; --bad: #b91c1c;
  --display: "Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", sans-serif;
  --rainbow: linear-gradient(90deg, #ff5f6d, #ffb347, #ffe066, #47d18c, #3fa7ff, #a26bff, #ff5f6d);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131211; --fg: #efece6; --muted: #a09a91; --line: #2c2a27;
    --card: #1c1b19; --accent: #3b82f6; --ok: #4ade80; --bad: #f87171;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

/* ---- Header ---- */
.stripe { height: 6px; background: var(--rainbow); }
header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; flex-direction: column; align-items: center; gap: 16px; padding-top: 26px; padding-bottom: 20px; }
.logo { font-family: var(--display); font-size: 32px; font-weight: 800; letter-spacing: -0.03em; line-height: 1;
  color: var(--fg); text-decoration: none; display: flex; align-items: center; gap: 12px; }
.logo b { font-weight: 800; background: linear-gradient(90deg, #ff5f6d, #a26bff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.mark { position: relative; width: 38px; height: 34px; flex: none; transition: transform .4s ease; }
.logo:hover .mark { transform: rotate(120deg); }
.mark i { position: absolute; width: 21px; height: 21px; border-radius: 50%; mix-blend-mode: multiply; }
.mark i:nth-child(1) { background: #ff5f6d; left: 0; top: 0; }
.mark i:nth-child(2) { background: #ffd23f; right: 0; top: 0; }
.mark i:nth-child(3) { background: #3fa7ff; left: 8.5px; bottom: 0; }
@media (prefers-color-scheme: dark) { .mark i { mix-blend-mode: screen; } }
header.site nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
header.site nav a { padding: 7px 15px; border-radius: 999px; font-size: 15px; color: var(--fg); text-decoration: none;
  border: 1px solid var(--line); background: var(--card); transition: border-color .15s, transform .15s; }
header.site nav a:hover { border-color: var(--fg); transform: translateY(-1px); }
header.site nav a[aria-current] { background: var(--fg); color: var(--bg); border-color: var(--fg); }
@media (max-width: 480px) { .logo { font-size: 26px; } header.site nav a { font-size: 14px; padding: 6px 12px; } }

main { padding: 36px 0 56px; }
h1, h2 { font-family: var(--display); letter-spacing: -0.02em; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 10px; font-weight: 800; }
h2 { font-size: 22px; margin: 44px 0 12px; font-weight: 600; }
.center { text-align: center; }
p.center { max-width: 560px; margin-left: auto; margin-right: auto; }
.lead { color: var(--muted); margin: 0 0 24px; }
.muted { color: var(--muted); font-size: 14px; }

button, .btn { font: inherit; cursor: pointer; border: 1px solid var(--line); background: var(--card); color: var(--fg);
  border-radius: 8px; padding: 8px 14px; }
button:hover { border-color: var(--muted); }
button:disabled { opacity: .5; cursor: not-allowed; }
.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.primary:hover { filter: brightness(1.08); border-color: var(--accent); }
.big { width: 100%; font-size: 20px; font-weight: 600; padding: 20px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; gap: 10px; }
.small { font-size: 13px; padding: 4px 10px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-top: 16px; }
.notice { border-color: var(--bad); }

.result { display: flex; gap: 16px; align-items: stretch; flex-wrap: wrap; }
.swatch { width: 120px; min-height: 120px; border-radius: 10px; border: 1px solid var(--line); flex: none; }
.values { flex: 1; min-width: 220px; display: grid; gap: 8px; align-content: center; }
.row { display: flex; align-items: center; gap: 10px; }
.row b { width: 44px; font-size: 13px; color: var(--muted); font-weight: 600; }
.row code { flex: 1; font: 16px ui-monospace, Menlo, Consolas, monospace; }

input[type=text], input[type=number] { font: 16px ui-monospace, Menlo, Consolas, monospace; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); width: 100%; }
input[type=color] { width: 48px; height: 44px; padding: 2px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); flex: none; cursor: pointer; }
label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; }
.field { display: flex; gap: 8px; align-items: center; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .grid2 { grid-template-columns: 1fr; } }
.error { color: var(--bad); font-size: 14px; min-height: 21px; margin: 6px 0 0; }

/* Saved colors: one row per color */
.saved { display: grid; gap: 6px; }
.srow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; padding: 6px; border: 1px solid var(--line); border-radius: 10px; }
.srow .sw { width: 36px; height: 36px; padding: 0; border-radius: 8px; border: 1px solid var(--line); flex: none; }
.srow code { font: 14px ui-monospace, Menlo, Consolas, monospace; }
.srow .shex { width: 72px; font-weight: 600; }
.srow .srgb { flex: 1; min-width: 130px; color: var(--muted); }
.srow .x2 { width: 30px; padding: 4px 0; }

/* Color browser */
.browser { border: 1px solid var(--line); border-radius: 12px; padding: 16px; background: var(--card); }
.sv-wrap { position: relative; touch-action: none; }
#sv { width: 100%; height: 200px; margin: 0; border-radius: 8px; display: block; cursor: crosshair; }
.dot { position: absolute; width: 18px; height: 18px; margin: -9px 0 0 -9px; border: 2px solid #fff; border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(0,0,0,.5); pointer-events: none; }
.hue { width: 100%; margin: 14px 0 4px; height: 14px; border-radius: 7px; -webkit-appearance: none; appearance: none; cursor: pointer;
  background: linear-gradient(to right, #f00, #ff0, #0f0, #0ff, #00f, #f0f, #f00); }
.hue::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%; background: #fff; border: 2px solid #333; }
.hue::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 2px solid #333; }
.bfields { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 8px; margin-top: 12px; }
@media (max-width: 480px) { .bfields { grid-template-columns: 1fr 1fr 1fr; } .bfields > div:first-child { grid-column: 1 / -1; } }

.drop { border: 2px dashed var(--line); border-radius: 12px; padding: 20px; text-align: center; color: var(--muted); }
.drop.over { border-color: var(--accent); }
canvas { max-width: 100%; height: auto; display: block; margin-top: 12px; border-radius: 8px; cursor: crosshair; }

.tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.tools a { display: block; padding: 14px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; color: var(--fg); }
.tools a:hover { border-color: var(--muted); }
.tools small { display: block; color: var(--muted); }

.shades { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; }
.shades button { height: 70px; border-radius: 10px; border: 1px solid var(--line); font: 13px ui-monospace, Menlo, Consolas, monospace;
  display: flex; align-items: flex-end; justify-content: center; padding-bottom: 6px; }

.preview { border-radius: 10px; padding: 20px; border: 1px solid var(--line); }
.preview .lg { font-size: 24px; font-weight: 700; margin: 0 0 6px; }
.preview p { margin: 0; }
.ratio { font-size: 40px; font-weight: 700; margin: 0; }
.checks { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.checks div { padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; }
.pass { color: var(--ok); font-weight: 600; } .fail { color: var(--bad); font-weight: 600; }

.prose { color: var(--fg); }
.prose p, .prose li { color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 20px 0; font-size: 13px; color: var(--muted); }

/* ---- Color names lookbook ---- */
.search { display: block; width: 100%; max-width: 520px; margin: 4px auto 0; font: 16px system-ui, sans-serif; padding: 12px 18px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--fg); }
.search:focus { outline: none; border-color: var(--fg); }
.jump { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin: 16px 0 0; }
.jump a { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--fg); text-decoration: none; }
.jump a:hover { border-color: var(--fg); }
.jump a i { width: 10px; height: 10px; border-radius: 50%; }
.book { scroll-margin-top: 16px; }
.book h2 { margin-bottom: 2px; }
.book > p { margin: 0 0 14px; color: var(--muted); font-size: 15px; }
.cgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
@media (max-width: 400px) { .cgrid { grid-template-columns: 1fr 1fr; gap: 10px; } }
.ccard { border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--bg);
  transition: transform .15s ease, box-shadow .15s ease; }
.ccard:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(0,0,0,.08); }
.ccard[hidden], .book[hidden] { display: none; }
.cswatch { display: block; width: 100%; height: 120px; border: 0; border-radius: 0; padding: 0; border-bottom: 1px solid var(--line); cursor: copy; }
.cinfo { padding: 10px 12px 2px; }
.cinfo b { display: block; font-family: var(--display); font-size: 17px; font-weight: 600; }
.cinfo code { font: 13px ui-monospace, Menlo, Consolas, monospace; }
.cinfo small { display: block; color: var(--muted); font: 12px ui-monospace, Menlo, Consolas, monospace; }
.cact { display: flex; gap: 4px; padding: 8px 10px 10px; }
.cact button { font-size: 12px; padding: 3px 9px; border-radius: 999px; }
.cact .heart { margin-left: auto; font-size: 14px; padding: 2px 9px; }
.heart.on { color: #e11d48; border-color: #e11d48; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 16px); background: var(--fg); color: var(--bg);
  padding: 10px 18px; border-radius: 999px; font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 10; max-width: calc(100% - 32px); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }