/*
 * Sabi Code — structure.
 *
 * Layered on top of tokens.css. This file holds layout and components only.
 *
 * Structure note: the backdrop is two offset radials plus a fine grain. A
 * single linear gradient across a page is the most recognisable generated
 * look there is, and a glass panel over a flat field has nothing to refract.
 */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* The atmospheric field. Radial, offset, and behind everything. */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: var(--z-backdrop);
  pointer-events: none;
  background:
    radial-gradient(58rem 38rem at 14% -8%, rgba(22, 119, 255, 0.2), transparent 62%),
    radial-gradient(48rem 34rem at 92% 6%, rgba(124, 92, 255, 0.13), transparent 60%),
    radial-gradient(52rem 40rem at 50% 112%, rgba(22, 119, 255, 0.11), transparent 64%);
}

/* Grain. Breaks the banding that large radial gradients produce on wide
   colour ramps, which is the other half of why gradients read as generated. */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: var(--z-backdrop);
  pointer-events: none;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}

a { color: inherit; }
code, pre { font-family: var(--font-mono); font-size: 0.92em; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--sp-5);
  position: relative;
  z-index: var(--z-base);
}

.visually-hidden, .skip:not(:focus) {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip:focus {
  position: fixed;
  inset-block-start: var(--sp-3);
  inset-inline-start: var(--sp-3);
  z-index: var(--z-overlay);
  padding: var(--sp-2) var(--sp-3);
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
}

:focus-visible {
  outline: 2px solid var(--primary-hover);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ------------------------------------------------------------- surfaces

   Two surface classes, deliberately not interchangeable.

   `.glass` refracts, and is reserved for elements that genuinely overlay
   something moving beneath them: the sticky masthead, the language menu, the
   auth card. Frosting a static card over a static gradient is decoration, and
   decoration is the named failure mode of glassmorphism.

   `.panel` is a flat translucent fill with a border. It separates content
   without pretending to be glass, and it stays legible where blur would
   soften text edges. Content blocks use this one. */

/* ------------------------------------------------------------ masthead */

.masthead {
  position: sticky;
  inset-block-start: 0;
  z-index: var(--z-header);
  background: rgba(11, 15, 23, 0.72);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  border-block-end: 1px solid var(--glass-border);
}

.masthead__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  min-block-size: 60px;
}

.wordmark {
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: var(--fs-md);
  text-decoration: none;
}
.wordmark span { color: var(--primary); margin-inline: 1px; }

.masthead nav { display: flex; gap: var(--sp-5); flex-wrap: wrap; }
.masthead nav a {
  text-decoration: none;
  color: var(--fg-muted);
  font-size: var(--fs-sm);
  padding-block: var(--sp-2);
  transition: color 180ms ease;
}
.masthead nav a:hover { color: var(--fg); }

.glass, .panel {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow-sm);
}

@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .glass {
    background: var(--glass-strong);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(150%);
    backdrop-filter: blur(var(--glass-blur)) saturate(150%);
    box-shadow: var(--glass-shadow);
  }
}

/* ---------------------------------------------------------------- hero */

.hero { padding-block: var(--sp-9) var(--sp-8); max-width: 46rem; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 0 0 var(--sp-4);
  padding: var(--sp-1) var(--sp-3);
  border-radius: 999px;
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  color: var(--primary-hover);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.hero h1 {
  margin: 0 0 var(--sp-5);
  font-size: clamp(2.4rem, 1.4rem + 3.4vw, var(--fs-3xl));
  line-height: var(--lh-tight);
  letter-spacing: -0.035em;
  font-weight: 700;
}

.lede {
  margin: 0 0 var(--sp-6);
  font-size: var(--fs-md);
  color: var(--fg-muted);
  max-width: var(--measure);
  line-height: var(--lh-body);
}
.lede em { color: var(--fg); font-style: normal; font-weight: 600; }

.hero__actions {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  align-items: center;
  margin-block-end: var(--sp-5);
}

/* -------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-block-size: var(--control-h-lg);
  padding: 0 var(--sp-5);
  border: 1px solid var(--glass-border-bright);
  border-radius: var(--radius);
  text-decoration: none;
  font: inherit;
  font-weight: 500;
  color: var(--fg);
  background: var(--glass-strong);
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, transform 120ms ease;
}
.btn:hover { background: rgba(255, 255, 255, 0.13); border-color: var(--glass-border-bright); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn:disabled:hover { background: var(--glass-strong); }

.btn--primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(22, 119, 255, 0.3);
}
.btn--primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn--primary:active { background: var(--primary-active); }

/* ---------------------------------------------------------------- bands */

.band { padding-block: var(--sp-8); position: relative; }
.band + .band { border-block-start: 1px solid var(--glass-border); }

.band__head { max-width: var(--measure); margin-block-end: var(--sp-6); }
.band__head h2 {
  margin: 0 0 var(--sp-3);
  font-size: var(--fs-xl);
  letter-spacing: -0.02em;
  line-height: var(--lh-heading);
  font-weight: 600;
}
.band__head p { margin: 0; color: var(--fg-muted); }

/* --------------------------------------------------------------- tables */

table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
caption { text-align: start; }
th, td {
  text-align: start;
  padding: var(--sp-3) var(--sp-4);
  border-block-end: 1px solid var(--glass-border);
}
thead th {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-faint);
  font-weight: 600;
  white-space: nowrap;
}
tbody th { font-weight: 500; color: var(--fg); }
tbody tr:last-child th, tbody tr:last-child td { border-block-end: 0; }
tbody tr { transition: background 160ms ease; }
tbody tr:hover { background: rgba(255, 255, 255, 0.035); }

.pool__empty { color: var(--fg-faint); text-align: center; padding-block: var(--sp-6); }

.pill {
  display: inline-block;
  padding: 0.1rem var(--sp-2);
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: 500;
  border: 1px solid;
  white-space: nowrap;
}
.pill--on { color: #6ee7a0; background: rgba(82, 196, 26, 0.13); border-color: rgba(82, 196, 26, 0.36); }
.pill--off { color: var(--fg-faint); background: transparent; border-color: var(--glass-border); }
.pill--unknown { color: #ffc069; background: rgba(250, 173, 20, 0.13); border-color: rgba(250, 173, 20, 0.36); }
.pill--paid { color: #b3a0ff; background: rgba(124, 58, 237, 0.15); border-color: rgba(124, 58, 237, 0.4); }

.compare td:nth-child(2) { color: var(--fg-muted); }
.compare td:nth-child(3) { color: var(--fg); font-weight: 600; }

/* ---------------------------------------------------------------- steps */

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-4); }
.steps li {
  display: grid;
  grid-template-columns: 1.75rem 1fr;
  gap: var(--sp-4);
  align-items: start;
  padding: var(--sp-5);
  transition: border-color 200ms ease, transform 200ms ease;
}
.steps li:hover { border-color: var(--glass-border-bright); transform: translateY(-1px); }
.steps li:last-child { padding-block-end: var(--sp-5); }
.steps__n {
  display: grid;
  place-items: center;
  inline-size: 1.75rem;
  block-size: 1.75rem;
  border-radius: var(--radius);
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  color: var(--primary-hover);
  font-size: var(--fs-xs);
  font-weight: 700;
}
.steps h3 {
  margin: 0 0 var(--sp-2);
  font-size: var(--fs-md);
  letter-spacing: -0.01em;
  font-weight: 600;
}
.steps p { margin: 0; color: var(--fg-muted); max-width: var(--measure); }

/* ------------------------------------------------------- forms and auth */

.form-band { max-width: 30rem; }
.form-card { padding: var(--sp-6); }

.form { display: grid; gap: var(--sp-4); margin-block: var(--sp-5); }
.field { display: grid; gap: var(--sp-2); }
.field > span {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-faint);
  font-weight: 600;
}
.field input {
  font: inherit;
  font-size: var(--fs-sm);
  min-block-size: var(--control-h-lg);
  padding: 0 var(--sp-3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.24);
  color: var(--fg);
  transition: border-color 180ms ease, background 180ms ease;
}
.field input::placeholder { color: var(--fg-faint); }
.field input:hover { border-color: var(--glass-border-bright); }
.field input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
  background: rgba(0, 0, 0, 0.32);
}
.form button.btn { justify-self: stretch; }

.notice {
  margin: var(--sp-4) 0 0;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  border: 1px solid;
}
.notice--bad {
  color: #ff9a9c;
  background: var(--error-soft);
  border-color: var(--error-border);
}

/* ------------------------------------------------------- stats and code */

.stats { display: flex; flex-wrap: wrap; gap: var(--sp-6); margin-block: var(--sp-5); }
.stats > div { display: grid; gap: 2px; }
.stats__n {
  font-size: var(--fs-2xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stats__l { font-size: var(--fs-sm); color: var(--fg-faint); }
.muted { color: var(--fg-faint); font-weight: 400; }

.code {
  margin: 0;
  padding: var(--sp-5);
  background: rgba(0, 0, 0, 0.32);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow-sm);
  overflow-x: auto;
  line-height: 1.7;
}
.c-mut { color: var(--fg-faint); }
.c-str { color: #6ee7a0; }

/* ---------------------------------------------------------- key generator */

.keyrow {
  padding: var(--sp-4);
  margin-block-end: var(--sp-3);
}
.keyrow__fields {
  display: grid;
  grid-template-columns: minmax(9rem, 13rem) 1fr auto;
  gap: var(--sp-3);
  align-items: end;
}
.keyrow__label { display: grid; gap: var(--sp-2); }
.keyrow__label > span {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-faint);
  font-weight: 600;
}
.keyrow__select, .keyrow__input {
  font: inherit;
  font-size: var(--fs-sm);
  min-block-size: var(--control-h);
  padding: 0 var(--sp-3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.24);
  color: var(--fg);
  min-inline-size: 0;
}
.keyrow__select option { background: var(--bg-deep); color: var(--fg); }
.keyrow__input:disabled { background: rgba(0, 0, 0, 0.14); color: var(--fg-faint); }
.keyrow__input:focus, .keyrow__select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}
.keyrow__remove {
  font: inherit;
  font-size: var(--fs-lg);
  line-height: 1;
  inline-size: var(--control-h);
  block-size: var(--control-h);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: var(--glass-strong);
  color: var(--fg-muted);
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease;
}
.keyrow__remove:hover { border-color: var(--error-border); color: var(--error); }
.keyrow__note { margin: var(--sp-2) 0 0; color: var(--fg-faint); font-size: var(--fs-xs); }

button.btn { font: inherit; font-size: var(--fs-sm); }

/* ---------------------------------------------------------------- footer */

.foot {
  padding-block: var(--sp-7) var(--sp-8);
  margin-block-start: var(--sp-7);
  border-block-start: 1px solid var(--glass-border);
  color: var(--fg-muted);
  font-size: var(--fs-sm);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  justify-content: space-between;
  align-items: baseline;
}
.foot p { margin: 0; }
.foot .fineprint { margin: 0; }

.fineprint {
  color: var(--fg-faint);
  font-size: var(--fs-sm);
  max-width: var(--measure);
  margin-block-start: var(--sp-4);
}
.fineprint strong { color: var(--fg-muted); }

/* ------------------------------------------------------------ responsive */

@media (max-width: 720px) {
  .masthead nav { display: none; }
  .hero { padding-block: var(--sp-7) var(--sp-6); }
  .band { padding-block: var(--sp-7); }
  .keyrow__fields { grid-template-columns: 1fr auto; }
  .keyrow__label:first-child { grid-column: 1 / -1; }
  .foot { flex-direction: column; gap: var(--sp-2); }
}

@media (max-width: 560px) {
  thead { display: none; }
  table, tbody, tr, td, th { display: block; }
  tbody tr { border-block-end: 1px solid var(--glass-border); padding-block: var(--sp-2); }
  tbody th, tbody td { border: 0; padding: var(--sp-2); }
  tbody td::before { content: attr(data-label) ': '; color: var(--fg-faint); font-size: var(--fs-xs); }
}

/* -------------------------------------------------- language switcher */

.lang { position: relative; margin-inline-start: var(--sp-2); }
.lang > summary {
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--fg-muted);
  padding: var(--sp-1) var(--sp-3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: var(--glass);
  transition: border-color 160ms ease, color 160ms ease;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}
.lang > summary::-webkit-details-marker { display: none; }
.lang > summary::after { content: '▾'; font-size: 0.7em; opacity: 0.6; }
.lang > summary:hover { border-color: var(--glass-border-bright); color: var(--fg); }
.lang[open] > summary { border-color: var(--primary-border); color: var(--fg); }

.lang__menu {
  position: absolute;
  inset-inline-end: 0;
  inset-block-start: calc(100% + var(--sp-2));
  min-inline-size: 11rem;
  padding: var(--sp-1);
  border-radius: var(--radius);
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  z-index: var(--z-overlay);
}
.lang__menu a {
  display: block;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: var(--fs-sm);
  color: var(--fg-muted);
  white-space: nowrap;
}
.lang__menu a:hover { background: rgba(255, 255, 255, 0.07); color: var(--fg); }
.lang__menu a[aria-current='page'] { color: var(--primary-hover); font-weight: 500; }