/* Fieldline Convert — layout: single-column landing (sticky nav, hero + stat strip,
   converter desk, format grid, plans, footer) with overlay modals. Ops-console look. */
:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #eceef1;
  --ink: #15181d;
  --ink-soft: #565d68;
  --line: #d9dde3;
  --accent: #ff5a1f;
  --accent-ink: #ffffff;
  --good: #1f9d55;
  --warn: #c47f17;
  --crit: #cf3b32;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --maxw: 1120px;
  --r: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1013; --surface: #171a1f; --surface-2: #1f242b;
    --ink: #eef1f4; --ink-soft: #99a2ad; --line: #2a3139;
    --accent: #ff6a33; --accent-ink: #141414;
    --good: #35c172; --warn: #e0a53a; --crit: #e8584e;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1013; --surface: #171a1f; --surface-2: #1f242b;
  --ink: #eef1f4; --ink-soft: #99a2ad; --line: #2a3139;
  --accent: #ff6a33; --accent-ink: #141414;
  --good: #35c172; --warn: #e0a53a; --crit: #e8584e;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--sans); line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
[hidden] { display: none !important; }
h1, h2, h3, h4 { text-wrap: balance; margin: 0; font-weight: 600; letter-spacing: -0.015em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.wrap {
  max-width: var(--maxw); margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* nav */
.nav {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; gap: 22px; padding-block: 14px; }
.brand { font-weight: 700; letter-spacing: -0.02em; font-size: 17px; display: flex; align-items: center; gap: 9px; }
.brand .dot { width: 9px; height: 9px; border-radius: 2px; background: var(--accent); display: inline-block; }
.brand .thin { color: var(--ink-soft); font-weight: 500; }
.nav-links { display: flex; gap: 20px; margin-left: 6px; }
.nav-links a { color: var(--ink-soft); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--ink); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.theme-btn { background: var(--surface-2); border: 1px solid var(--line); color: var(--ink-soft);
  width: 34px; height: 34px; border-radius: 8px; font-size: 15px; display: grid; place-items: center; }
.theme-btn:hover { color: var(--ink); }
@media (max-width: 680px) { .nav-links { display: none; } }

.btn {
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  padding: 9px 16px; border-radius: 8px; font-size: 14px; font-weight: 600;
  transition: transform .06s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { border-color: var(--ink-soft); }
.btn:active { transform: translateY(1px); }
.btn.pri { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.pri:hover { background: color-mix(in srgb, var(--accent) 88%, black); }
.btn.block { width: 100%; }

/* hero */
.hero { padding-block: 56px 40px; }
.pill { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 12px;
  letter-spacing: .04em; text-transform: uppercase; color: var(--ink-soft);
  background: var(--surface-2); border: 1px solid var(--line); padding: 5px 11px; border-radius: 999px; }
.pill .lv { width: 7px; height: 7px; border-radius: 50%; background: var(--good);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--good) 25%, transparent); }
.hero h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.04; margin-top: 20px; max-width: 16ch; }
.hero .sub { color: var(--ink-soft); font-size: clamp(15px, 2vw, 18px); max-width: 52ch; margin-top: 18px; }
.hero-cta { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.hero-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 34px; align-items: start; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; gap: 28px; } }
.feat-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 10px; }
.feat-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink-soft); }
.feat-list .tick { color: var(--accent); font-weight: 700; flex: none; }
.side-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; display: grid; gap: 18px; }
.side-card h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-soft); font-family: var(--mono); font-weight: 500; }
.flow { display: flex; align-items: center; gap: 8px; }
.flow .node { flex: 1; text-align: center; font-family: var(--mono); font-size: 12px;
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 7px; padding: 10px 6px; }
.flow .node.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.flow .arr { color: var(--ink-soft); font-size: 12px; }
.note { font-size: 13px; color: var(--ink-soft); border-top: 1px solid var(--line); padding-top: 16px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin-top: 40px; }
.stat { background: var(--surface); padding: 18px 16px; }
.stat .n { font-size: clamp(20px, 3vw, 28px); font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat .l { font-size: 12px; color: var(--ink-soft); margin-top: 3px; }
@media (max-width: 680px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* sections */
.section { padding-block: 48px; border-top: 1px solid var(--line); }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.section h2 { font-size: clamp(24px, 4vw, 34px); margin-top: 10px; }
.section .lead { color: var(--ink-soft); margin-top: 10px; max-width: 56ch; }

/* converter */
.desk { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; margin-top: 28px; }
@media (max-width: 860px) { .desk { grid-template-columns: 1fr; } }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.panel-head h3 { font-size: 15px; }
.status-chip { font-family: var(--mono); font-size: 11px; color: var(--good); display: flex; align-items: center; gap: 6px; }
.status-chip .lv { width: 6px; height: 6px; border-radius: 50%; background: var(--good); }
.drop { border: 1.5px dashed var(--line); border-radius: var(--r); background: var(--surface-2);
  padding: 34px 18px; text-align: center; transition: border-color .15s, background .15s; }
.drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--surface-2)); }
.drop .ic { font-size: 30px; }
.drop .big { font-weight: 600; margin-top: 8px; }
.drop .small { font-size: 13px; color: var(--ink-soft); margin-top: 4px; }
.drop .pick { margin-top: 14px; }
.filebar { display: flex; align-items: center; gap: 12px; margin-top: 14px; font-size: 13px;
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; }
.filebar .fn { font-weight: 600; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.filebar .fs { color: var(--ink-soft); margin-left: auto; font-family: var(--mono); font-size: 12px; flex: none; }
.filebar .x { border: none; background: none; color: var(--ink-soft); font-size: 16px; flex: none; }
.fmt-row { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: end; margin-top: 18px; }
@media (max-width: 520px) { .fmt-row { grid-template-columns: 1fr; } .fmt-row .swap { justify-self: center; transform: rotate(90deg); } }
.field label { display: block; font-size: 12px; color: var(--ink-soft); margin-bottom: 6px; font-family: var(--mono); text-transform: uppercase; letter-spacing: .04em; }
select { width: 100%; appearance: none; background: var(--surface-2); color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; padding: 11px 12px; font-family: var(--mono); font-size: 13px;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%), linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%);
  background-position: calc(100% - 17px) 50%, calc(100% - 12px) 50%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
select:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.swap { width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-soft); font-size: 15px; }
.swap:hover { color: var(--accent); border-color: var(--accent); }
.guard-msg { font-size: 12.5px; margin-top: 12px; display: none; align-items: center; gap: 8px; }
.guard-msg.show { display: flex; }
.guard-msg.bad { color: var(--crit); }
.guard-msg.ok { color: var(--good); }
.run-row { display: flex; gap: 10px; margin-top: 18px; flex-wrap: wrap; }
.run-row .btn { flex: 1; min-width: 150px; }
.mini-stack { display: grid; gap: 16px; }
.mini-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 16px 18px; }
.mini-card h4 { font-size: 13px; font-family: var(--mono); text-transform: uppercase; letter-spacing: .05em; color: var(--ink-soft); font-weight: 500; }
.mini-card p { font-size: 13px; color: var(--ink-soft); margin-top: 8px; }
.mini-card ol { margin: 8px 0 0; padding-left: 18px; font-size: 13px; color: var(--ink-soft); display: grid; gap: 5px; }

/* formats */
.fmt-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 26px; }
@media (max-width: 860px) { .fmt-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 460px) { .fmt-grid { grid-template-columns: 1fr; } }
.fmt-cat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 16px; }
.fmt-cat h4 { font-size: 13px; color: var(--ink-soft); font-family: var(--mono); text-transform: uppercase; letter-spacing: .05em; font-weight: 500; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tag { font-family: var(--mono); font-size: 11.5px; background: var(--surface-2); border: 1px solid var(--line); border-radius: 6px; padding: 4px 8px; color: var(--ink); }

/* plans */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
@media (max-width: 760px) { .plans { grid-template-columns: 1fr; } }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; display: flex; flex-direction: column; gap: 14px; }
.plan.pop { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.plan .badge { align-self: flex-start; font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; padding: 3px 9px; border-radius: 999px; background: var(--surface-2); color: var(--ink-soft); border: 1px solid var(--line); }
.plan.pop .badge { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.plan h3 { font-size: 18px; }
.plan .price { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.plan .price span { font-size: 14px; color: var(--ink-soft); font-weight: 500; }
.plan ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; font-size: 14px; color: var(--ink-soft); }
.plan li { display: flex; gap: 9px; }
.plan li::before { content: "\2192"; color: var(--accent); flex: none; }
.plan .btn { margin-top: auto; }

/* footer */
footer { border-top: 1px solid var(--line); padding-block: 28px; color: var(--ink-soft); font-size: 13px; }
footer .foot-in { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
footer .brand { font-size: 14px; }

/* modals */
.overlay { position: fixed; inset: 0; z-index: 50; background: rgba(8,10,13,.55);
  display: grid; place-items: center; padding: 18px; padding-top: max(18px, env(safe-area-inset-top, 0px)); }
.modal { background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  width: 100%; max-width: 440px; padding: 24px; position: relative; box-shadow: 0 24px 60px rgba(0,0,0,.4); }
.modal .close { position: absolute; top: 14px; right: 14px; border: none; background: none; color: var(--ink-soft); font-size: 20px; }
.modal h3 { font-size: 19px; }
.modal .msub { color: var(--ink-soft); font-size: 14px; margin-top: 6px; }
.prog-head { display: flex; justify-content: space-between; align-items: baseline; margin-top: 18px; }
.prog-pct { font-family: var(--mono); font-size: 30px; font-weight: 700; font-variant-numeric: tabular-nums; }
.prog-eta { font-family: var(--mono); font-size: 12px; color: var(--ink-soft); }
.prog-stage { font-family: var(--mono); font-size: 12px; color: var(--ink-soft); margin-top: 2px; }
.bar { height: 8px; background: var(--surface-2); border-radius: 999px; overflow: hidden; margin-top: 12px; border: 1px solid var(--line); }
.bar > i { display: block; height: 100%; width: 0%; background: var(--accent); border-radius: 999px; transition: width .35s ease; }
.stages { display: flex; gap: 6px; margin-top: 14px; }
.stages .st { flex: 1; text-align: center; font-family: var(--mono); font-size: 10.5px; color: var(--ink-soft); padding: 7px 2px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface-2); }
.stages .st.done { color: var(--good); border-color: color-mix(in srgb, var(--good) 45%, var(--line)); }
.stages .st.active { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); }
.tabs { display: flex; gap: 6px; background: var(--surface-2); border: 1px solid var(--line); border-radius: 9px; padding: 4px; margin-top: 18px; }
.tabs button { flex: 1; border: none; background: none; color: var(--ink-soft); font-weight: 600; font-size: 14px; padding: 8px; border-radius: 6px; }
.tabs button.on { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.form-grid { display: grid; gap: 12px; margin-top: 16px; }
.form-grid input { width: 100%; background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px;
  padding: 11px 12px; font-family: inherit; font-size: 14px; color: var(--ink); }
.form-grid input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.form-grid label { font-size: 12px; color: var(--ink-soft); margin-bottom: -6px; font-family: var(--mono); text-transform: uppercase; letter-spacing: .04em; }
.inline-err { font-size: 12px; color: var(--crit); display: none; }
.inline-err.show { display: block; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }