/* privafile.net — design system
   Palette: deep ink + signal green (trust, "go") + warm paper.
   No frameworks. Fast. */

:root {
  --ink: #0f1a14;
  --ink-2: #2c3a33;
  --muted: #6b7a72;
  --line: #e2e8e4;
  --paper: #ffffff;
  --paper-2: #f7faf8;
  --green: #128a5b;
  --green-dark: #0d6a45;
  --green-soft: #e8f5ee;
  --amber: #b45309;
  --amber-soft: #fef3c7;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 1px 2px rgba(15,26,20,.06), 0 4px 16px rgba(15,26,20,.06);
  --shadow-lg: 0 4px 12px rgba(15,26,20,.08), 0 16px 40px rgba(15,26,20,.10);
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { color: var(--ink); line-height: 1.2; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: clamp(1.9rem, 5vw, 3rem); }
h2 { font-size: clamp(1.4rem, 3.5vw, 2rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
a { color: var(--green-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; height: auto; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 720px; }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(10px);
  position: sticky; top: 0; z-index: 50;
}
.site-header .wrap { display: flex; align-items: center; gap: 24px; height: 62px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 800; color: var(--ink); font-size: 1.12rem; letter-spacing: -.03em; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  display: grid; place-items: center; color: #fff; font-size: 14px; flex: none;
}
.nav { margin-left: auto; display: flex; align-items: center; gap: 22px; font-size: .94rem; }
.nav a { color: var(--ink-2); font-weight: 500; }
.nav a:hover { color: var(--green-dark); }

/* ---------- Privacy badge strip ---------- */
.privacy-strip {
  background: var(--green-soft);
  border-bottom: 1px solid #d3ebdd;
  font-size: .86rem; color: var(--green-dark);
  text-align: center; padding: 8px 16px; font-weight: 600;
}
.privacy-strip .dot { color: var(--green); margin-right: 6px; }

/* ---------- Hero ---------- */
.hero { padding: 64px 0 40px; text-align: center; }
.hero .lede { font-size: clamp(1rem, 2.4vw, 1.18rem); color: var(--muted); max-width: 620px; margin: 0 auto 28px; }
.hero h1 { max-width: 760px; margin-left: auto; margin-right: auto; }
.hero .accent { color: var(--green); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius); font-weight: 600; font-size: .97rem;
  border: 1px solid transparent; cursor: pointer; transition: all .15s ease;
  background: var(--green); color: #fff; text-decoration: none;
}
.btn:hover { background: var(--green-dark); text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.secondary { background: #fff; color: var(--ink); border-color: var(--line); }
.btn.secondary:hover { background: var(--paper-2); border-color: #c9d5cd; }
.btn.lg { padding: 15px 30px; font-size: 1.05rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* ---------- Tool grid ---------- */
.section { padding: 44px 0; }
.section-head { margin-bottom: 24px; }
.grid { display: grid; gap: 14px; }
.grid.cols-3 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }

.tool-card {
  display: flex; flex-direction: column; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--paper); transition: all .15s ease; text-decoration: none; height: 100%;
}
.tool-card:hover { border-color: var(--green); box-shadow: var(--shadow); text-decoration: none; transform: translateY(-2px); }
.tool-card .ico { font-size: 1.5rem; margin-bottom: 10px; display: block; }
.tool-card h3 { font-size: 1rem; margin: 0 0 4px; color: var(--ink); }
.tool-card p { font-size: .86rem; color: var(--muted); margin: 0; line-height: 1.5; }
.tool-card .chip { align-self: flex-start; display: inline-block; font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--green-dark); background: var(--green-soft); padding: 2px 8px; border-radius: 20px; margin-bottom: 8px; }

/* ---------- Dropzone ---------- */
.dropzone {
  border: 2px dashed #c3d3c9; border-radius: var(--radius-lg);
  padding: 44px 24px; text-align: center; background: var(--paper-2);
  cursor: pointer; transition: all .15s ease;
}
.dropzone:hover, .dropzone.dragover { border-color: var(--green); background: var(--green-soft); }
.dropzone .dz-ico { font-size: 2.4rem; display: block; margin-bottom: 10px; }
.dropzone strong { color: var(--ink); display: block; margin-bottom: 4px; }
.dropzone span { color: var(--muted); font-size: .88rem; }

/* ---------- Workspace ---------- */
.file-list { list-style: none; padding: 0; margin: 16px 0 0; }
.file-list li {
  display: flex; align-items: center; gap: 12px; padding: 11px 14px;
  border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 8px; background: #fff;
  font-size: .92rem;
}
.file-list .fname { font-weight: 600; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-list .fsize { color: var(--muted); font-size: .82rem; margin-left: auto; flex: none; }
.file-list .rm { border: none; background: none; color: var(--muted); cursor: pointer; font-size: 1.1rem; padding: 2px 6px; border-radius: 6px; flex: none; }
.file-list .rm:hover { background: #fee; color: #c00; }

.controls { margin: 22px 0; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.field { display: flex; flex-direction: column; gap: 5px; }
.field label { font-size: .82rem; font-weight: 600; color: var(--ink-2); }
.field input, .field select {
  padding: 9px 12px; border: 1px solid var(--line); border-radius: var(--radius);
  font-size: .92rem; font-family: inherit; background: #fff; color: var(--ink);
}
.field input:focus, .field select:focus { outline: 2px solid var(--green); outline-offset: -1px; border-color: var(--green); }

/* ---------- Status / toast ---------- */
.status {
  padding: 13px 16px; border-radius: var(--radius); font-size: .92rem;
  margin: 16px 0; display: none; align-items: center; gap: 10px;
}
.status.show { display: flex; }
.status.working { background: var(--amber-soft); color: var(--amber); }
.status.ok { background: var(--green-soft); color: var(--green-dark); }
.status.err { background: #fee2e2; color: #991b1b; }

.spinner {
  width: 15px; height: 15px; border: 2px solid currentColor; border-top-color: transparent;
  border-radius: 50%; animation: spin .7s linear infinite; flex: none;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Result ---------- */
.result { display: none; margin: 22px 0; padding: 20px; border: 1px solid var(--green); background: var(--green-soft); border-radius: var(--radius-lg); }
.result.show { display: block; }
.result h3 { margin-top: 0; }

/* ---------- Proof panel ---------- */
.proof-panel { background: var(--ink); color: #cfe8dc; border-radius: var(--radius-lg); padding: 26px; margin: 28px 0; font-family: var(--mono); font-size: .84rem; }
.proof-panel h3 { color: #fff; font-family: var(--sans); }
.proof-panel .pass { color: #4ade80; font-weight: 700; }
.proof-panel .fail { color: #f87171; font-weight: 700; }
.proof-panel .row { padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,.09); display: flex; gap: 10px; }
.proof-panel .row:last-child { border-bottom: none; }
.proof-panel .k { color: #7fa896; min-width: 128px; }

/* ---------- Content blocks ---------- */
.card { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; background: var(--paper); }
.faq details { border: 1px solid var(--line); border-radius: var(--radius); padding: 0; margin-bottom: 10px; background: #fff; }
.faq summary { padding: 14px 18px; cursor: pointer; font-weight: 600; color: var(--ink); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.3rem; color: var(--green); font-weight: 400; }
.faq details[open] summary::after { content: "\2212"; }
.faq details[open] summary { border-bottom: 1px solid var(--line); }
.faq .faq-body { padding: 14px 18px 18px; font-size: .94rem; }

.steps { counter-reset: s; list-style: none; padding: 0; }
.steps li { counter-increment: s; position: relative; padding-left: 42px; margin-bottom: 14px; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 1px; width: 27px; height: 27px;
  background: var(--green-soft); color: var(--green-dark); border-radius: 50%;
  display: grid; place-items: center; font-weight: 700; font-size: .84rem;
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); margin-top: 60px; padding: 40px 0 30px; background: var(--paper-2); font-size: .88rem; color: var(--muted); }
.site-footer .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 28px; margin-bottom: 28px; }
.site-footer h4 { font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); margin-bottom: 10px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 6px; }
.site-footer a { color: var(--ink-2); }
.site-footer .bottom { border-top: 1px solid var(--line); padding-top: 20px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; }

/* ---------- Breadcrumb ---------- */
.crumbs { font-size: .82rem; color: var(--muted); padding: 18px 0 0; }
.crumbs a { color: var(--muted); }
.crumbs span { margin: 0 6px; }

/* ---------- Utility ---------- */
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
.hide { display: none !important; }

@media (max-width: 640px) {
  .nav { gap: 14px; font-size: .88rem; }
  .hero { padding: 40px 0 28px; }
  .dropzone { padding: 30px 16px; }
  .site-header .wrap { height: 56px; }
}