/* ============================================================
   iron26 — umbrella system + universal app shell
   Small, sharp tools for files and notes.
   ------------------------------------------------------------
   One stylesheet every tool inherits. A tool page sets its
   accent by adding a class to <html> (e.g. class="accent-clay")
   and fills the shell slots. No per-tool layout surgery.
   ============================================================ */

/* ---- 1. tokens ---------------------------------------------------------- */
:root{
  /* core palette (brand floor) */
  --ink:        #101418;   /* near-black text            */
  --ink-2:      #3a3f47;   /* strong secondary           */
  --paper:      #fbfaf7;   /* warm off-white page bg     */
  --surface:    #ffffff;   /* card / panel surface       */
  --muted:      #6b7280;   /* secondary text             */
  --line:       #e4e2dc;   /* hairline borders           */
  --line-2:     #efeee9;   /* faintest divider           */

  /* accent — overridable per tool (see §accents) */
  --accent:     #2f6f4f;   /* muted forest green         */
  --accent-ink: #245a40;   /* accent text on light       */
  --accent-soft:#e7efe9;   /* accent tint                */

  /* geometry */
  --radius:   10px;
  --radius-sm:7px;
  --measure:  720px;       /* reading width              */
  --wide:     940px;       /* tool work-area width        */
  --pad:      24px;        /* page gutter                 */

  /* type */
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --head: "Space Grotesk", var(--sans);
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --shadow: 0 1px 2px rgba(16,20,24,.04);   /* used sparingly — hairlines do the work */
}

/* ---- accents (curated, in-family) -------------------------------------- */
.accent-green{ --accent:#2f6f4f; --accent-ink:#245a40; --accent-soft:#e7efe9; }
.accent-steel{ --accent:#3a5a78; --accent-ink:#2e4a64; --accent-soft:#e8eef4; }
.accent-clay { --accent:#9a5b3f; --accent-ink:#824a32; --accent-soft:#f4e9e3; }
.accent-slate{ --accent:#4a4f5e; --accent-ink:#3a3e4b; --accent-soft:#ececef; }
.accent-plum { --accent:#6a4a6e; --accent-ink:#573c5b; --accent-soft:#efe8f1; }

/* ---- dark mode (coherent with light: warm dark, brighter in-family accents)
   Token-only override — every component derives from these vars, so flipping
   the tokens flips the whole system. Same hue families, lifted for dark bg:
   --accent brightens, --accent-ink becomes the LIGHT accent text, --accent-soft
   becomes a dark-surface tint. Honors the OS setting automatically. ----------- */
@media (prefers-color-scheme: dark){
  :root{
    --ink:        #ece9e2;   /* warm off-white text on dark */
    --ink-2:      #b9b4a9;   /* secondary text              */
    --paper:      #15171a;   /* warm near-black page bg     */
    --surface:    #1c1f23;   /* card / panel surface        */
    --muted:      #8b8f98;   /* tertiary text               */
    --line:       #2c2f34;   /* hairline borders            */
    --line-2:     #24262a;   /* faintest divider            */
    /* default (green) accent lifted for dark */
    --accent:     #5fae84;   --accent-ink:#7cc59c;  --accent-soft:#1d2a23;
    --shadow: 0 1px 2px rgba(0,0,0,.4);
  }
  .accent-green{ --accent:#5fae84; --accent-ink:#7cc59c; --accent-soft:#1d2a23; }
  .accent-steel{ --accent:#6d9bc4; --accent-ink:#8fb6d9; --accent-soft:#1a2530; }
  .accent-clay { --accent:#c98a68; --accent-ink:#d7a384; --accent-soft:#2c211b; }
  .accent-slate{ --accent:#8b909f; --accent-ink:#a3a8b6; --accent-soft:#23252b; }
  .accent-plum { --accent:#a07ba6; --accent-ink:#b596ba; --accent-soft:#272030; }
  /* keep form controls legible on dark */
  .input, .textarea, select.input{ color-scheme:dark; }
  .btn-primary{ color:#15171a; }            /* dark text on bright accent button */
  .chip-soon .dot{ background:#d8b65a; }
}

/* ---- 2. reset / base --------------------------------------------------- */
*{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{ font-family:var(--head); font-weight:600; line-height:1.15; letter-spacing:-.01em; margin:0; }
h1{ font-size:38px; font-weight:700; letter-spacing:-.025em; }
h2{ font-size:21px; }
h3{ font-size:17px; }
p{ margin:0; text-wrap:pretty; }
a{ color:var(--accent-ink); text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset:2px; }
::selection{ background:var(--accent-soft); }
code,kbd,samp{ font-family:var(--mono); font-size:.86em; }
:focus-visible{ outline:2.5px solid var(--accent); outline-offset:2px; border-radius:3px; }

/* code chips inside prose */
.kbd{ font-family:var(--mono); font-size:.82em; background:var(--line-2); border:1px solid var(--line);
      border-radius:5px; padding:1px 6px; color:var(--ink-2); white-space:nowrap; }

/* ---- 3. layout primitives ---------------------------------------------- */
.i26{ min-height:100vh; display:flex; flex-direction:column; }
.wrap{ width:100%; max-width:var(--measure); margin:0 auto; padding-inline:var(--pad); }
.wrap.wide{ max-width:var(--wide); }
.stack > * + *{ margin-top:var(--gap, 18px); }
.muted{ color:var(--muted); }
.lede{ font-size:19px; line-height:1.55; color:var(--ink-2); }

/* mono eyebrow label — used above section headings & as status context */
.eyebrow{
  font-family:var(--mono); font-size:11px; font-weight:500;
  letter-spacing:.13em; text-transform:uppercase; color:var(--muted);
  display:inline-flex; align-items:center; gap:8px;
}
.eyebrow::before{ /* the bracket-rivet tick — sibling signature */
  content:""; width:6px; height:6px; background:var(--accent);
  box-shadow:-7px 0 0 -2px var(--accent), 7px 0 0 -2px var(--accent);
}

/* ---- 4. header / lockup ------------------------------------------------ */
.i26-header{
  border-bottom:1px solid var(--line);
  background:color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter:saturate(1.1) blur(6px);
  position:sticky; top:0; z-index:20;
}
.i26-header .bar{
  max-width:var(--wide); margin:0 auto; padding:14px var(--pad);
  display:flex; align-items:center; gap:14px;
}
.i26-lockup{ display:inline-flex; align-items:center; gap:9px; color:var(--ink); }
.i26-lockup:hover{ text-decoration:none; }
.i26-mark{ width:22px; height:22px; display:block; color:var(--ink); flex:none; }
.i26-wordmark{ font-family:var(--mono); font-weight:700; font-size:16px; letter-spacing:-.02em; }
.i26-crumb{ font-family:var(--mono); font-size:14px; color:var(--muted); letter-spacing:-.01em; }
.i26-crumb b{ color:var(--ink-2); font-weight:500; }
.i26-nav{ margin-left:auto; display:flex; align-items:center; gap:18px; }
.i26-nav a{ font-size:14px; color:var(--muted); }
.i26-nav a:hover{ color:var(--ink); text-decoration:none; }

/* ---- 5. hero ----------------------------------------------------------- */
.i26-main{ flex:1 0 auto; padding-block:54px 72px; }
.i26-hero{ }
.i26-hero h1{ margin-top:14px; }
.i26-hero .lede{ margin-top:16px; max-width:38ch; }
.i26-action{ margin-top:30px; }   /* swappable module slot */

/* ---- 6. sections ------------------------------------------------------- */
.section{ margin-top:56px; }
.section > h2{ display:flex; align-items:baseline; gap:10px; }
.section-rule{ border:0; border-top:1px solid var(--line); margin:56px 0 0; }
.prose p + p{ margin-top:16px; }
.prose{ color:var(--ink-2); }
.prose strong{ color:var(--ink); font-weight:600; }

/* ---- 6b. article / long-form (blog posts + SEO guides) ----------------- */
.article{ max-width:var(--measure); }
.article h2{ font-size:21px; margin:1.8em 0 .5em; }
.article h3{ font-size:17px; margin:1.5em 0 .3em; }
.article .prose > p, .article .prose li{ line-height:1.65; }
.article .prose ul, .article .prose ol{ padding-left:1.3em; margin:1em 0; }
.article .prose li{ margin:.35em 0; }
.article .prose a{ text-decoration:underline; text-underline-offset:2px; }
.article code{ font-family:var(--mono); font-size:.86em; background:var(--accent-soft);
  padding:1px 6px; border-radius:5px; color:var(--ink); }
.article pre{ background:var(--surface); border:1px solid var(--line);
  border-radius:var(--radius); padding:14px 16px; overflow-x:auto;
  font-family:var(--mono); font-size:.85rem; line-height:1.5; }
.article pre code{ background:none; padding:0; }
.note, .article .note{ border:1px solid var(--line); border-left:3px solid var(--accent);
  border-radius:var(--radius); background:var(--surface); padding:2px 18px; margin:1.4em 0;
  color:var(--ink-2); }
.crumb{ font-family:var(--mono); font-size:13px; color:var(--muted); }

/* ---- 7. cards ---------------------------------------------------------- */
.card{
  background:var(--surface); border:1px solid var(--line);
  border-radius:var(--radius); padding:22px;
}
.card-grid{ display:grid; gap:14px; }
.card-grid.cols-3{ grid-template-columns:repeat(3,1fr); }
.card-grid.cols-2{ grid-template-columns:repeat(2,1fr); }

/* numbered "how it works" step */
.step .n{
  width:26px; height:26px; border-radius:50%; background:var(--accent-soft);
  color:var(--accent-ink); font-family:var(--mono); font-size:12px; font-weight:700;
  display:grid; place-items:center; margin-bottom:14px;
}
.step h3{ font-family:var(--head); font-size:15px; }
.step p{ margin-top:7px; font-size:14px; color:var(--muted); line-height:1.5; }

/* ---- 8. buttons -------------------------------------------------------- */
.btn{
  font-family:var(--head); font-weight:600; font-size:15px;
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:11px 20px; border-radius:var(--radius-sm); border:1px solid transparent;
  cursor:pointer; transition:background .12s, border-color .12s, transform .04s; line-height:1;
}
.btn:hover{ text-decoration:none; }
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:var(--accent-ink); }
.btn-ghost{ background:var(--surface); color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--ink-2); }
.btn-sm{ padding:8px 14px; font-size:14px; }

/* ---- 9. forms ---------------------------------------------------------- */
.field{ display:block; }
.field > label, .label{
  display:block; font-family:var(--head); font-weight:600; font-size:14px; margin-bottom:7px; color:var(--ink);
}
.label .opt{ font-family:var(--sans); font-weight:400; color:var(--muted); font-size:13px; }
.input, .textarea, select.input{
  width:100%; font-family:var(--sans); font-size:15px; color:var(--ink);
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:11px 13px; transition:border-color .12s, box-shadow .12s;
}
.input::placeholder, .textarea::placeholder{ color:#a7abb2; }
.input:focus, .textarea:focus, select.input:focus{
  outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-soft);
}
.textarea{ resize:vertical; min-height:84px; line-height:1.5; }
.row2{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.hint{ font-size:13px; color:var(--muted); margin-top:7px; }
.check{ display:inline-flex; align-items:center; gap:9px; font-size:15px; cursor:pointer; }
.check input{ width:16px; height:16px; accent-color:var(--accent); }

/* email capture row (waitlist) */
.capture{ display:flex; gap:10px; max-width:480px; }
.capture .input{ flex:1; }
@media (max-width:520px){ .capture{ flex-direction:column; } }

/* ---- 10. drop zone (repair archetype) ---------------------------------- */
.dropzone{
  border:1.5px dashed var(--line); border-radius:var(--radius);
  background:var(--surface); padding:46px 24px; text-align:center;
  transition:border-color .15s, background .15s;
}
.dropzone:hover{ border-color:var(--accent); background:color-mix(in srgb, var(--accent-soft) 40%, var(--surface)); }
.dropzone .dz-title{ font-family:var(--head); font-weight:600; font-size:18px; }
.dropzone .dz-or{ color:var(--muted); font-size:14px; margin:14px 0; }
.dropzone .dz-actions{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

/* ---- 11. status chips -------------------------------------------------- */
.chip{
  font-family:var(--mono); font-size:11px; font-weight:500; letter-spacing:.04em;
  display:inline-flex; align-items:center; gap:6px; padding:4px 10px;
  border-radius:999px; border:1px solid var(--line); color:var(--ink-2); background:var(--surface);
}
.chip .dot{ width:6px; height:6px; border-radius:50%; background:var(--muted); }
.chip-live{ color:var(--accent-ink); border-color:color-mix(in srgb,var(--accent) 35%,var(--line)); background:var(--accent-soft); }
.chip-live .dot{ background:var(--accent); }
.chip-soon{ color:var(--muted); }
.chip-soon .dot{ background:#c8a23a; }
.chip-paid{ color:var(--ink-2); }

/* tag (inside tool mocks) */
.tag{ font-family:var(--mono); font-size:11px; color:var(--muted); background:var(--line-2);
      border:1px solid var(--line); border-radius:999px; padding:2px 9px; display:inline-block; }

/* ---- 12. inline callout (privacy / mechanism) -------------------------- */
.callout{
  border:1px solid var(--line); border-left:3px solid var(--accent);
  border-radius:var(--radius); background:var(--surface); padding:18px 20px;
  font-size:15px; line-height:1.55; color:var(--ink-2);
}
.callout strong{ color:var(--ink); }

/* ---- 13. pricing / unlock (optional, omittable) ------------------------ */
.tiers{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.tier{ border:1px solid var(--line); border-radius:var(--radius); padding:24px; background:var(--surface); }
.tier.is-paid{ background:color-mix(in srgb, var(--accent-soft) 55%, var(--surface)); border-color:color-mix(in srgb,var(--accent) 22%,var(--line)); }
.tier h3{ font-family:var(--head); font-size:17px; }
.tier .tier-sub{ color:var(--muted); font-size:14px; margin-top:5px; }
.tier ul{ margin:16px 0 0; padding-left:20px; }
.tier li{ margin-top:9px; font-size:15px; }
.tier .price{ margin-top:16px; font-size:14px; color:var(--ink-2); }
.tier .price b{ font-family:var(--mono); color:var(--ink); }

/* ---- 14. guides / link list -------------------------------------------- */
.linklist{ margin:14px 0 0; padding:0; list-style:none; }
.linklist li{ padding:11px 0; border-top:1px solid var(--line-2); }
.linklist li:first-child{ border-top:0; }
.linklist a{ display:inline-flex; align-items:center; gap:8px; }
.linklist a::before{ content:"→"; color:var(--muted); font-family:var(--mono); }

/* ---- 15. footer -------------------------------------------------------- */
.i26-footer{
  flex:none; border-top:1px solid var(--line); margin-top:72px;
  background:color-mix(in srgb, var(--paper) 70%, #f1efe9);
}
.i26-footer .bar{ max-width:var(--wide); margin:0 auto; padding:26px var(--pad) 40px;
  display:flex; flex-wrap:wrap; gap:8px 28px; align-items:baseline; }
.i26-footer .line{ font-size:14px; color:var(--ink-2); }
.i26-footer .line .sep{ color:var(--line); margin:0 6px; }
.i26-footer .tag-line{ font-family:var(--mono); font-size:12px; color:var(--muted); width:100%; margin-top:4px; }
.i26-footer nav{ margin-left:auto; display:flex; gap:18px; }
.i26-footer nav a{ font-size:14px; color:var(--muted); }

/* ---- 16. hub directory ------------------------------------------------- */
.hub-head{ padding-block:60px 10px; }
.hub-cat{ margin-top:48px; }
.hub-cat > .eyebrow{ margin-bottom:16px; }
.tool-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
.tool-card{
  display:flex; flex-direction:column; gap:10px; min-height:150px;
  border:1px solid var(--line); border-radius:var(--radius); background:var(--surface);
  padding:22px; transition:border-color .12s, transform .06s;
}
.tool-card:hover{ border-color:var(--accent); text-decoration:none; transform:translateY(-1px); }
.tool-card .tc-top{ display:flex; align-items:center; gap:10px; }
.tool-card .tc-mark{ width:18px; height:18px; flex:none; }
.tool-card h3{ font-family:var(--head); font-size:18px; color:var(--ink); }
.tool-card p{ font-size:14.5px; color:var(--muted); line-height:1.5; }
.tool-card .tc-foot{ margin-top:auto; display:flex; align-items:center; justify-content:space-between; }
.tool-card .tc-go{ font-family:var(--mono); font-size:13px; color:var(--accent-ink); }

/* ---- 17. responsive ---------------------------------------------------- */
@media (max-width:760px){
  h1{ font-size:30px; }
  .card-grid.cols-3, .tiers, .tool-grid, .row2{ grid-template-columns:1fr; }
  .i26-main{ padding-block:38px 48px; }
}

/* ---- 18. motion safety ------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
}
