/* Obsidian ground, ice-white type, a violet glow overhead. Each form brings its own accent; the library itself runs on electric cyan. */
:root {
  --bg: #050505; --panel: #0E0E13; --panel2: #15151C; --ink: #F5F7FA; --muted: #9AA3B5;
  --line: #26262F; --accent: #00BFFF; --on-accent: #050505; --glow: #8C1BFF; --paper: #F5F7FA; --paper-ink: #050505;
  --display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --mono: "DM Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box }
[hidden] { display: none !important }
html { background: var(--bg) }
body { margin: 0; min-height: 100vh; color: var(--ink); font-family: var(--display); font-size: 16px; line-height: 1.5; padding-inline: 18px; padding-block: 28px 64px;
  background: radial-gradient(70% 45% at 90% -8%, rgba(140, 27, 255, .30), transparent 70%), radial-gradient(55% 40% at -10% 105%, rgba(140, 27, 255, .14), transparent 70%), var(--bg); background-attachment: fixed }
main { max-width: 34rem; margin: 0 auto; display: flex; flex-direction: column; gap: 18px }
main.wide { max-width: 58rem }
a { color: var(--accent) }
::selection { background: var(--accent); color: var(--on-accent) }
.brand { font-family: var(--mono); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink); text-decoration: none; font-weight: 500 }
.brand b { color: var(--accent); font-weight: 500; text-shadow: 0 0 12px var(--accent) }
header { display: flex; flex-direction: column; gap: 10px; padding-block: 8px 10px }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted) }
h1 { font-size: clamp(2.6rem, 12vw, 4.4rem); line-height: .92; font-weight: 800; letter-spacing: -.03em; margin: 0; text-wrap: balance }
h1 em, h2 em, h3 em, .finale legend em, .finale > label em { font-family: var(--serif); font-weight: 400; font-style: italic; color: var(--accent); letter-spacing: -.01em; text-shadow: 0 0 28px color-mix(in srgb, var(--accent) 45%, transparent) }
h2 { font-size: 2rem; line-height: 1; margin: 0; font-weight: 800; letter-spacing: -.02em; text-wrap: balance }
h3 { font-size: 1.25rem; line-height: 1.15; margin: 0; font-weight: 700 }
.lede { color: var(--muted); margin: 0; max-width: 32rem }
form { display: flex; flex-direction: column; gap: 14px }
fieldset, .field, .panel { border: 1px solid var(--line); background: var(--panel); border-radius: 22px; padding: 18px; margin: 0; min-width: 0; display: flex; flex-direction: column; gap: 12px }
legend, .field label { font-weight: 600; font-size: 1.08rem; line-height: 1.25; padding: 0; float: left; width: 100% }
legend small, .field label small { font-family: var(--mono); font-weight: 400; font-size: 11px; color: var(--accent); letter-spacing: .08em; text-transform: uppercase; margin-left: 6px }
.chips { display: flex; flex-wrap: wrap; gap: 8px; clear: both }
.chips label { position: relative; cursor: pointer }
.chips input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer }
.chips span, .pill { display: block; padding: 9px 14px; border: 1px solid var(--line); border-radius: 999px; font-size: .95rem; transition: transform .12s, background .12s, box-shadow .12s, border-color .12s; background: var(--panel2); color: var(--ink); font-family: inherit }
.chips label:hover span, .pill:hover { border-color: color-mix(in srgb, var(--accent) 60%, var(--line)) }
.chips.nums span { min-width: 42px; text-align: center; padding-inline: 0; font-family: var(--mono) }
.chips input:checked + span, .pill[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 55%, transparent) }
.chips input:checked + span { transform: scale(1.04) }
.chips input:focus-visible + span, .pill:focus-visible, .card:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px }
.pill { cursor: pointer }
.ends { display: flex; justify-content: space-between; gap: 12px; font-family: var(--serif); font-style: italic; color: var(--muted); font-size: 1rem }
input[type=text], input[type=search], textarea { width: 100%; font: inherit; color: var(--ink); background: transparent; border: 0; border-bottom: 1px solid var(--line); padding: 8px 0; border-radius: 0; resize: vertical }
input[type=search] { border: 1px solid var(--line); border-radius: 999px; padding: 12px 18px; background: var(--panel) }
input:focus-visible, textarea:focus-visible { outline: none; border-color: var(--accent) }
::placeholder { color: var(--muted); opacity: .7 }
.finale { border-color: color-mix(in srgb, var(--accent) 70%, transparent); background: linear-gradient(160deg, var(--panel), color-mix(in srgb, var(--accent) 14%, var(--panel))); box-shadow: 0 0 40px color-mix(in srgb, var(--accent) 18%, transparent) }
.finale legend, .finale > label { font-size: clamp(1.7rem, 8vw, 2.4rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.05 }
.finale .chips:not(.nums) { flex-direction: column }
.finale .chips:not(.nums) span { border-radius: 16px; padding: 14px 16px; font-size: 1.02rem }
.btn { font: inherit; font-weight: 600; font-size: 1.05rem; border: 0; border-radius: 999px; padding: 15px 22px; background: var(--accent); color: var(--on-accent); cursor: pointer; text-align: center; text-decoration: none; box-shadow: 0 0 24px color-mix(in srgb, var(--accent) 35%, transparent) }
.btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); box-shadow: none }
.btn.small { font-size: .9rem; padding: 10px 16px }
.btn:disabled { opacity: .6; cursor: default }
.err { color: #FF6B7A; font-family: var(--mono); font-size: 13px; margin: 0 }
.row { display: flex; gap: 10px; flex-wrap: wrap }
.row .btn { flex: 1 1 auto }
.receipt { background: var(--paper); color: var(--paper-ink); font-family: var(--mono); font-size: 13px; line-height: 1.6; padding: 24px 20px 30px; white-space: pre-wrap; overflow-wrap: anywhere; border-top: 4px solid var(--accent);
  -webkit-mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) 50% / 8px 100%; mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) 50% / 8px 100% }
.receipt b { font-weight: 500; letter-spacing: .04em }
.tilt { transform: rotate(-1deg) }
.linkbox { font-family: var(--mono); font-size: 13px; color: var(--accent); background: var(--bg); border: 1px dashed color-mix(in srgb, var(--accent) 45%, var(--line)); border-radius: 12px; padding: 10px 12px; overflow-wrap: anywhere; user-select: all }
.meta { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: .04em }
details summary { cursor: pointer }
@media (prefers-reduced-motion: reduce) { .chips span, .pill { transition: none } }