/* Black and white only: the stimuli bring the colour, the survey stays out of the way. */
:root {
  color-scheme: dark;
  --bg: #000000;
  --card: #0D0D0D;
  --ink: #FFFFFF;
  --muted: #9B9B9B;
  --line: #2B2B2B;
  --line-strong: #5A5A5A;
  --accent: #FFFFFF;
  --accent-ink: #000000;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--bg); }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 "Inter Tight", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
h1, h2, h3 { font-family: "Instrument Serif", Georgia, serif; font-weight: 400; line-height: 1.08; margin: 0 0 .4em; letter-spacing: -.01em; }
h1 { font-size: clamp(38px, 9vw, 60px); }
h2 { font-size: clamp(32px, 7.5vw, 46px); }
h3 { font-size: 26px; }
em { font-family: "Instrument Serif", Georgia, serif; font-size: 1.1em; }
.wrap { max-width: 720px; margin: 0 auto; padding: 76px 16px 48px; }

.top { position: fixed; inset: 0 0 auto 0; z-index: 5; display: flex; align-items: center; gap: 14px; padding: 14px 16px; background: rgba(0, 0, 0, .86); backdrop-filter: blur(10px); }
.progress { flex: 1; height: 2px; background: var(--line); overflow: hidden; }
#bar { height: 100%; width: 0; background: var(--ink); transition: width .35s ease; }
.lang { min-width: 44px; min-height: 36px; border: 1px solid var(--line-strong); border-radius: 999px; background: transparent; color: var(--ink); font: 600 12px "Inter Tight", sans-serif; letter-spacing: .08em; cursor: pointer; }

.kicker { text-transform: uppercase; letter-spacing: .18em; font-size: 11px; color: var(--muted); margin: 0 0 14px; }
.lead { color: #CFCFCF; font-size: 18px; }
.round { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin: 22px 0 10px; }
.note { font-size: 13px; color: var(--muted); margin: 8px 0 12px; }
.hero { margin: 22px 0; aspect-ratio: 1; object-fit: cover; width: 100%; border-radius: var(--radius); }
.points { padding: 0; list-style: none; border-top: 1px solid var(--line); }
.points li { padding: 12px 0; border-bottom: 1px solid var(--line); color: #DADADA; }
.privacy { margin-top: 18px; color: var(--muted); font-size: 14px; }
.privacy summary { cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin: 18px 0; }
.card-img { border-radius: 10px; margin: 0 0 14px; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 14px 0 0; }
.facts div { background: var(--card); padding: 14px; }
.facts b { display: block; font: 400 28px/1.1 "Instrument Serif", Georgia, serif; }
.facts span { font-size: 13px; color: var(--muted); }

.seals { display: flex; gap: 10px; align-items: center; margin-top: 14px; }
.seals img { height: 40px; width: auto; }

.q { border: 0; padding: 0; margin: 26px 0 0; }
.q legend { font-weight: 600; margin-bottom: 12px; padding: 0; }
.q .hint { display: block; font-weight: 400; color: var(--muted); font-size: 14px; margin-top: 2px; }
.choices { display: flex; flex-wrap: wrap; gap: 8px; }
.choices.stack { flex-direction: column; }
.chip { min-height: 44px; padding: 10px 16px; border: 1px solid var(--line-strong); border-radius: 999px; background: transparent; color: var(--ink); font: inherit; font-size: 16px; cursor: pointer; text-align: left; transition: background .15s, color .15s; }
.choices.stack .chip { border-radius: 12px; }
.chip.on { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); }
.chip.img { display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px 6px 6px; border-radius: 12px; }
.chip.img img { width: 34px; height: 44px; object-fit: cover; border-radius: 6px; }

.scale-row { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; }
.dot { min-height: 46px; border: 1px solid var(--line-strong); border-radius: 10px; background: transparent; color: var(--ink); font: 500 16px "Inter Tight", sans-serif; cursor: pointer; }
.dot.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.scale-ends { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); margin-top: 6px; }

/* best–worst: best = solid white, worst = struck through and dimmed */
.bw { border-top: 1px solid var(--line); }
.bw-head { display: grid; grid-template-columns: 64px 1fr 64px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); text-align: center; padding: 10px 0; }
.bw-row { display: grid; grid-template-columns: 64px 1fr 64px; align-items: center; border-bottom: 1px solid var(--line); padding: 12px 0; }
.bw-name { text-align: center; font-family: "Instrument Serif", Georgia, serif; font-size: 32px; line-height: 1.1; transition: opacity .15s; }
.bw-row.is-worst .bw-name { opacity: .35; text-decoration: line-through; text-decoration-thickness: 1px; }
.bw-btn { justify-self: center; width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line-strong); background: transparent; color: var(--ink); font: 400 22px "Inter Tight", sans-serif; cursor: pointer; }
.bw-btn.best.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.bw-btn.worst.on { background: #3A3A3A; border-color: #3A3A3A; color: var(--ink); }

.grid4 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.grid5 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.tile { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); padding: 6px; background: var(--card); transition: border-color .15s, opacity .15s; }
.tile img { border-radius: 9px; aspect-ratio: 3 / 4; object-fit: cover; width: 100%; background: #111; }
.tile figcaption { font-size: 14px; padding: 8px 4px 0; }
.tile figcaption small { display: block; color: var(--muted); font-size: 12px; line-height: 1.35; }
.tile.is-best { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.tile.is-worst { opacity: .4; }
.tile-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 8px; }
.mini { min-height: 44px; border-radius: 8px; border: 1px solid var(--line-strong); background: transparent; color: var(--ink); font: 500 13px "Inter Tight", sans-serif; cursor: pointer; line-height: 1.15; padding: 4px; }
.mini.best.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.mini.worst.on { background: #3A3A3A; border-color: #3A3A3A; }
.pick { padding: 6px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); cursor: pointer; }
.pick.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.pick img { border-radius: 9px; aspect-ratio: 3 / 4; object-fit: cover; }
.fav { width: 52%; max-width: 280px; margin: 10px auto 6px; border-radius: 12px; }

.money { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.money .per { font-size: 14px; color: var(--muted); min-width: 9em; }
input[type="text"], input[type="number"], input[type="email"], textarea {
  min-height: 48px; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 10px; background: #0A0A0A; color: var(--ink); font: inherit; width: 100%;
}
.money input { width: 120px; }
input::placeholder, textarea::placeholder { color: #6A6A6A; }
textarea { resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; }

.wtp { display: grid; grid-template-columns: 64px 1fr; gap: 14px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.wtp img { width: 64px; aspect-ratio: 3 / 4; object-fit: cover; border-radius: 8px; }
.wtp b { display: block; font-weight: 600; }
.wtp small { color: var(--muted); font-size: 13px; display: block; margin-bottom: 6px; }

.price-tag { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin: 4px 0 12px; }
.price-tag b { font: 400 44px/1 "Instrument Serif", Georgia, serif; }
.price-tag span { color: var(--muted); }

.demo { display: flex; align-items: center; gap: 18px; margin-top: 12px; }
.glass { width: 74px; height: 96px; border: 2px solid rgba(255, 255, 255, .55); border-top: 0; border-radius: 0 0 16px 16px; position: relative; overflow: hidden; }
.glass .tea { position: absolute; inset: 22% 0 0 0; background: #2B3FD6; transition: background 1.6s ease; }
.glass.pink .tea { background: #FF5E9C; }

.cfg-preview { display: grid; grid-template-columns: 1fr; gap: 10px; justify-items: center; text-align: center; margin: 8px 0 4px; }
.cfg-preview img { width: 62%; max-width: 300px; border-radius: 12px; aspect-ratio: 3 / 4; object-fit: cover; }
.cfg-name { font: 400 40px/1 "Instrument Serif", Georgia, serif; }
.cfg-sub { color: var(--muted); font-size: 14px; }
.thumbs { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; }
.thumb { padding: 2px; border: 1px solid var(--line); border-radius: 8px; background: transparent; cursor: pointer; min-height: 44px; }
.thumb.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.thumb img { border-radius: 6px; aspect-ratio: 3 / 4; object-fit: cover; }
.checks { display: grid; gap: 8px; }
.check { display: flex; gap: 12px; align-items: center; min-height: 48px; padding: 8px 14px; border: 1px solid var(--line-strong); border-radius: 10px; cursor: pointer; }
.check input { width: 20px; height: 20px; accent-color: #fff; }
.range { display: flex; align-items: center; gap: 14px; }
.range input { flex: 1; accent-color: #fff; min-height: 44px; }
.range output { font: 400 30px/1 "Instrument Serif", Georgia, serif; min-width: 74px; text-align: right; }

.nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 34px; }
button.primary { min-height: 52px; padding: 0 28px; border: 0; border-radius: 999px; background: var(--accent); color: var(--accent-ink); font: 600 16px "Inter Tight", sans-serif; cursor: pointer; }
button.primary:disabled { opacity: .5; }
button.ghost { min-height: 48px; padding: 0 20px; border: 1px solid var(--line-strong); border-radius: 999px; background: transparent; color: var(--ink); font: 500 15px "Inter Tight", sans-serif; cursor: pointer; }
.err { color: #FFFFFF; font-weight: 600; min-height: 1.5em; margin: 18px 0 0; }
.err:not(:empty)::before { content: "! "; }
.ok { color: #FFFFFF; font-weight: 600; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }
.row input { flex: 1 1 200px; }
button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

.tile img, .wtp img { cursor: zoom-in; }
.lightbox { position: fixed; inset: 0; z-index: 20; background: rgba(0, 0, 0, .94); display: grid; place-items: center; padding: 16px; cursor: zoom-out; }
.lightbox img { max-height: 92vh; width: auto; max-width: 100%; border-radius: 12px; }

@media (min-width: 640px) {
  .grid4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .thumbs { grid-template-columns: repeat(9, minmax(0, 1fr)); }
  .facts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}