/* =====================================================================
   Base layout, typography, shared primitives (buttons, fields, cards)
   ===================================================================== */

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

/* One soft light source behind the page, top-left of the generator */
body::before {
  content: "";
  position: fixed;
  inset: -20vh -10vw auto -10vw;
  height: 70vh;
  background:
    radial-gradient(60% 60% at 22% 0%, rgba(124,92,255,.20), transparent 70%),
    radial-gradient(50% 50% at 82% 8%, rgba(56,189,248,.09), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--sp-5);
  position: relative;
  z-index: 1;
}

h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -.022em; font-weight: 700; }
h1 { font-size: var(--step-4); font-weight: 800; letter-spacing: -.035em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }

p { max-width: 68ch; }

.lede { color: var(--text-muted); font-size: var(--step-1); }
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); font-size: var(--step--1); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Buttons ------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: .72em 1.15em;
  border-radius: var(--r-md);
  font-size: var(--step-0);
  font-weight: 600;
  border: 1px solid transparent;
  transition: background .18s var(--ease), border-color .18s var(--ease),
              color .18s var(--ease), transform .12s var(--ease), opacity .18s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn[disabled], .btn.is-busy { opacity: .55; pointer-events: none; }

.btn-primary {
  background: linear-gradient(180deg, var(--accent-hi), var(--accent-low));
  color: #fff;
  box-shadow: 0 10px 30px -14px rgba(124,92,255,.9), inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:hover { filter: brightness(1.07); }

.btn-ghost {
  background: var(--surface-2);
  border-color: var(--line);
  color: var(--text);
}
.btn-ghost:hover { background: var(--surface-3); border-color: #2f2f3d; }

.btn-quiet { color: var(--text-muted); padding-inline: .6em; }
.btn-quiet:hover { color: var(--text); }

.btn-danger { background: rgba(242,99,122,.12); border-color: rgba(242,99,122,.35); color: #ffb3c0; }
.btn-danger:hover { background: rgba(242,99,122,.2); }

.btn-block { width: 100%; }
.btn-lg { padding: .95em 1.4em; font-size: var(--step-1); }
.btn-sm { padding: .45em .75em; font-size: var(--step--1); }

/* ---------- Cards & panels ----------------------------------------- */
.card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-2);
}
.card-pad { padding: var(--sp-5); }

/* ---------- Form fields -------------------------------------------- */
.field { display: grid; gap: .4rem; margin-bottom: var(--sp-4); }
.field:last-child { margin-bottom: 0; }
.field > label, .label {
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--text-muted);
}
.input, .textarea, .select {
  width: 100%;
  background: var(--bg-veil);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: .78em .9em;
  color: var(--text);
  transition: border-color .16s var(--ease), box-shadow .16s var(--ease), background .16s;
}
.input::placeholder, .textarea::placeholder { color: var(--text-faint); }
.input:hover, .textarea:hover, .select:hover { border-color: #2e2e3c; }
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--accent-line);
  box-shadow: 0 0 0 4px var(--accent-ghost);
  background: var(--surface);
}
.textarea { min-height: 130px; resize: vertical; line-height: 1.55; }
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239a99ad' d='M1 1.5 6 6.5l5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.4rem;
}
.field-error { color: var(--danger); font-size: var(--step--1); min-height: 1.2em; }
.input.has-error, .textarea.has-error { border-color: rgba(242,99,122,.6); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); }

.switch { display: flex; align-items: center; gap: .6rem; cursor: pointer; }
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch-track {
  width: 40px; height: 23px; border-radius: var(--r-pill);
  background: var(--surface-3); border: 1px solid var(--line);
  position: relative; transition: background .2s var(--ease), border-color .2s;
  flex: none;
}
.switch-track::after {
  content: ""; position: absolute; top: 2px; left: 2px;
  width: 17px; height: 17px; border-radius: 50%;
  background: var(--text-faint); transition: transform .2s var(--ease), background .2s;
}
.switch input:checked + .switch-track { background: var(--accent-low); border-color: var(--accent-line); }
.switch input:checked + .switch-track::after { transform: translateX(17px); background: #fff; }
.switch input:focus-visible + .switch-track { box-shadow: 0 0 0 4px var(--accent-ghost); }

/* ---------- Footer -------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line-soft);
  margin-top: var(--sp-8);
  padding-block: var(--sp-6);
  color: var(--text-faint);
  font-size: var(--step--1);
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: var(--sp-4); justify-content: space-between; }
.site-footer a:hover { color: var(--text); }

/* ---------- Marketing sections -------------------------------------- */
.section { padding-block: var(--sp-8); }
.section-head { max-width: 60ch; margin-bottom: var(--sp-6); }
.section-head p { color: var(--text-muted); margin-top: var(--sp-3); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
.feature {
  padding: var(--sp-5);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255,255,255,.022), transparent);
}
.feature h3 { font-size: var(--step-1); margin-bottom: .4rem; }
.feature p { color: var(--text-muted); font-size: var(--step--1); }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); counter-reset: step; }
.step { border-top: 2px solid var(--accent-line); padding-top: var(--sp-4); }
.step-n {
  font-family: var(--font-mono); font-size: var(--step--1);
  color: var(--accent-hi); display: block; margin-bottom: .35rem;
}
.step h3 { font-size: var(--step-1); margin-bottom: .3rem; }
.step p { color: var(--text-muted); font-size: var(--step--1); }

.faq { display: grid; gap: 0; border-top: 1px solid var(--line-soft); max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line-soft); }
.faq summary {
  padding: var(--sp-4) 2.5rem var(--sp-4) 0;
  cursor: pointer; font-weight: 600; list-style: none; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: .5rem; top: 50%; transform: translateY(-50%);
  color: var(--accent-hi); font-size: 1.3rem; line-height: 1;
}
.faq details[open] summary::after { content: "–"; }
.faq p { padding-bottom: var(--sp-4); color: var(--text-muted); }