/* Landing page layout (index.html). Colours come from theme.css. */

/* ---------- nav ---------- */
.l-nav .wrap { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; height: 68px; }
.l-nav-links { display: flex; justify-content: center; gap: 4px; }
.l-nav-links a, .l-nav-login { color: var(--text-2); font-size: 14px; font-weight: 500; padding: 8px 12px; border-radius: 9px; transition: color .15s, background .15s; }
.l-nav-links a:hover, .l-nav-login:hover { color: var(--text); background: var(--surface-2); }
.l-nav-actions { display: flex; align-items: center; gap: 8px; }
.l-burger { display: none; width: 38px; height: 38px; place-items: center; border-radius: 10px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); cursor: pointer; padding: 0; }
.l-burger svg { width: 18px; height: 18px; }
.nav.scrolled { background: rgb(var(--bg-rgb) / 0.86); border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }

/* ---------- hero ---------- */
.l-hero { position: relative; padding: 72px 0 40px; overflow: hidden; isolation: isolate; }
.l-hero::before {
  content: ""; position: absolute; inset: -20% -10% auto; height: 760px; z-index: -1;
  background:
    radial-gradient(ellipse 50% 45% at 22% 18%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%),
    radial-gradient(ellipse 40% 40% at 85% 30%, color-mix(in srgb, var(--accent-3) 14%, transparent), transparent 70%);
}
.l-hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, #000 20%, transparent 75%);
}
.l-hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.l-hero h1 { font-size: clamp(34px, 4.3vw, 54px); line-height: 1.05; letter-spacing: -1.8px; font-weight: 800; margin: 22px 0 20px; }
.l-lead { font-size: clamp(16px, 1.6vw, 18.5px); line-height: 1.65; color: var(--text-2); margin: 0 0 30px; max-width: 560px; }
.l-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.l-notes { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 13.5px; color: var(--muted); }
.l-notes li { display: inline-flex; align-items: center; gap: 7px; }
.l-notes svg { width: 15px; height: 15px; color: var(--ok); }

/* product preview: idea → question → result */
.l-preview { position: relative; display: grid; gap: 14px; padding: 8px 0 28px; }
.l-card { background: var(--surface); border: 1px solid var(--line-strong); border-radius: 16px; padding: 16px 18px; box-shadow: var(--shadow); }
.l-label, .l-kicker { display: block; font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.l-kicker { color: var(--accent-2); }
.l-idea { width: 88%; }
.l-idea p { margin: 0; font-size: 15px; color: var(--text); }
.l-caret { display: inline-block; width: 2px; height: 1.05em; margin-left: 2px; vertical-align: -2px; background: var(--accent); animation: l-blink 1s steps(1) infinite; }
@keyframes l-blink { 50% { opacity: 0; } }
.l-question { margin-left: 8%; }
.l-question h3 { margin: 0 0 12px; font-size: 17px; letter-spacing: -.2px; }
.l-opts { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.l-opts span { display: flex; align-items: center; gap: 9px; padding: 9px 11px; border: 1px solid var(--line-strong); border-radius: 11px; font-size: 13px; color: var(--text-2); background: var(--surface-2); }
.l-opts kbd { width: 20px; height: 20px; display: grid; place-items: center; border-radius: 6px; border: 1px solid var(--line-strong); font: 600 10.5px var(--mono); color: var(--muted); background: var(--surface); flex: none; }
.l-opts i { margin-left: auto; width: 16px; height: 16px; border-radius: 5px; border: 1.5px solid var(--line-strong); flex: none; }
.l-opts .on { border-color: var(--accent); background: var(--accent-soft); color: var(--text); }
.l-opts .on kbd { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.l-opts .on i { background: var(--accent); border-color: var(--accent); box-shadow: inset 0 0 0 3px var(--surface); }
.l-progress { height: 5px; border-radius: 999px; background: var(--surface-3); margin-top: 14px; overflow: hidden; }
.l-progress span { display: block; width: 25%; height: 100%; background: var(--grad); border-radius: inherit; }
.l-result { width: 92%; display: grid; gap: 12px; }
.l-files { display: flex; flex-wrap: wrap; gap: 6px; }
.l-files span { font: 500 12px var(--mono); padding: 4px 9px; border-radius: 7px; background: var(--surface-2); border: 1px solid var(--line); color: var(--text-2); }
.l-checks { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 12.5px; color: var(--ok); font-weight: 600; }
.l-checks span { display: inline-flex; align-items: center; gap: 5px; }
.l-checks svg { width: 14px; height: 14px; }
.l-float { position: absolute; right: 0; bottom: 0; display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; border-radius: 12px; background: var(--grad); color: var(--on-accent); font-size: 13px; font-weight: 700; box-shadow: 0 14px 30px -12px color-mix(in srgb, var(--accent) 70%, transparent); }
.l-float svg { width: 16px; height: 16px; }

.l-stack { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); }
.l-stack span { font: 500 12.5px var(--mono); color: var(--muted); padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.l-stack .l-stack-title { font: 600 12px var(--font); border: 0; background: none; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }

/* ---------- sections ---------- */
section.block { padding: 96px 0; }
.l-steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: step; position: relative; }
.l-steps::before { content: ""; position: absolute; left: 6%; right: 6%; top: 46px; height: 1px; background: linear-gradient(90deg, transparent, var(--line-strong) 10%, var(--line-strong) 90%, transparent); z-index: 0; }
.l-steps .tile { grid-column: auto; position: relative; z-index: 1; counter-increment: step; padding: 26px 22px; }
.l-steps .tile::before { content: "0" counter(step); position: absolute; top: 18px; right: 18px; font: 600 12px var(--mono); color: var(--faint); }
.l-step-icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-2); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); }
.l-step-icon svg { width: 20px; height: 20px; }
.l-steps h3 { font-size: 16.5px; margin: 18px 0 8px; letter-spacing: -.2px; }
.l-steps p { margin: 0; font-size: 14px; color: var(--text-2); }

.l-studio .mock { max-width: 1060px; margin: 0 auto; }
.l-studio .stats-strip { margin-top: 28px; }

.showcase { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.showcase .item { color: inherit; }
.showcase .item:hover h3 { color: var(--accent-2); }

.l-faq { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.4fr); gap: 56px; align-items: start; }
.l-faq .head { position: sticky; top: 96px; margin-bottom: 0; }
.l-faq .faq { max-width: none; margin: 0; }

.l-foot { grid-template-columns: 1.6fr 1fr 1fr 1fr; }

/* ---------- responsive ---------- */
@media (max-width: 1060px) {
  .l-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .l-hero-copy { text-align: center; }
  .l-lead { margin-left: auto; margin-right: auto; }
  .l-cta, .l-notes { justify-content: center; }
  .l-preview { max-width: 560px; margin: 0 auto; width: 100%; }
  .l-steps { grid-template-columns: repeat(2, 1fr); }
  .l-steps::before { display: none; }
  .showcase { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .l-nav .wrap { grid-template-columns: auto 1fr; }
  .l-nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 2px; padding: 10px 20px 16px; background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .l-nav.open .l-nav-links { display: flex; }
  .l-nav-links a { padding: 12px; font-size: 15px; }
  .l-nav-actions { justify-self: end; }
  .l-burger { display: inline-grid; }
  .l-nav-login { display: none; }
  .l-faq { grid-template-columns: 1fr; gap: 28px; }
  .l-faq .head { position: static; }
  .l-foot { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .l-hero { padding-top: 44px; }
  .l-hero h1 { letter-spacing: -1.2px; }
  .l-cta .btn { width: 100%; }
  .l-idea, .l-result { width: 100%; }
  .l-question { margin-left: 0; }
  .l-opts { grid-template-columns: 1fr; }
  .l-float { position: static; justify-self: end; }
  .l-steps, .showcase { grid-template-columns: 1fr; }
  section.block { padding: 72px 0; }
  .l-nav-actions .btn { display: none; }
  .l-foot { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { .l-caret { animation: none; } }

/* the mock tree reuses .sub, which section titles style too */
section.block .mock-tree .sub { font-size: inherit; color: inherit; margin: 0; }
.l-mobile-only { display: none; }
@media (max-width: 860px) { .l-nav.open .l-mobile-only { display: block; color: var(--accent-2); font-weight: 600; } }