/* Salvage — reading-room design. SPDX-License-Identifier: MIT */

:root {
  --paper: #f6f1e7;
  --sheet: #fdfbf4;
  --sheet-edge: #efe7d6;
  --ink: #211d16;
  --ink-soft: #5c554a;
  --ink-faint: #6e6656;
  --line: rgba(33, 29, 22, 0.16);
  --accent: #bc3908;
  --accent-deep: #8f2b05;
  --accent-wash: #f4e0d3;
  --ok: #3e6b4f;
  --ok-wash: #e3ecdf;
  --warn: #755a10;
  --warn-wash: #f1e8cd;
  --dead: #6b3030;
  --dead-wash: #ecdcd7;
  --gold: #c9a227;
  --serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --sans: 'IBM Plex Sans', 'Helvetica Neue', sans-serif;
  --mono: 'IBM Plex Mono', 'SF Mono', monospace;
  --shadow: 0 1px 2px rgba(33, 29, 22, 0.06), 0 6px 24px -8px rgba(33, 29, 22, 0.18);
  --radius: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 .13 0 0 0 0 .11 0 0 0 0 .09 0 0 0 .05 0'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E"),
    var(--paper);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent-wash); }

/* ---------- staggered load reveal ---------- */
.reveal { animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both; animation-delay: calc(var(--d, 0) * 90ms); }
.d0 { --d: 0; } .d1 { --d: 1; } .d2 { --d: 2; } .d3 { --d: 3; } .d4 { --d: 4; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- header ---------- */
.top {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1.4rem 1.5rem 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: -0.01em;
}
.wordmark .mark { width: 1.35rem; height: 1.35rem; transform: translateY(2px); }
.top nav a {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
}
.top nav a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- hero ---------- */
main { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem 4rem; }

.hero { padding: 4.2rem 0 2.6rem; max-width: 46rem; }
.hero h1 {
  text-wrap: balance;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.15rem, 5.4vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.lede { margin-top: 1.3rem; font-size: 1.125rem; color: var(--ink-soft); max-width: 42rem; }
.lede strong { color: var(--ink); font-weight: 600; }

/* ---------- drop zone: a torn paper sheet ---------- */
.rescue-zone { margin-top: 0.5rem; }
.dropzone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 17rem;
  padding: 2.6rem 1.5rem 3.2rem;
  background: var(--sheet);
  border: 1.5px solid var(--line);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  /* box-shadow would be clipped by the torn-edge clip-path; drop-shadow follows the clipped shape */
  filter: drop-shadow(0 6px 14px rgba(33, 29, 22, 0.16));
  cursor: pointer;
  transition: border-color 0.18s ease, transform 0.18s ease, filter 0.18s ease;
  /* torn bottom edge */
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), 97.5% 100%, 94% calc(100% - 10px), 90% calc(100% - 3px), 86.5% calc(100% - 12px), 83% calc(100% - 5px), 79% calc(100% - 13px), 75.5% calc(100% - 4px), 72% calc(100% - 11px), 68% calc(100% - 2px), 64.5% calc(100% - 12px), 61% calc(100% - 6px), 57% calc(100% - 13px), 53.5% calc(100% - 3px), 50% calc(100% - 11px), 46% calc(100% - 5px), 42.5% calc(100% - 13px), 39% calc(100% - 4px), 35% calc(100% - 10px), 31.5% calc(100% - 2px), 28% calc(100% - 12px), 24% calc(100% - 6px), 20.5% calc(100% - 13px), 17% calc(100% - 4px), 13% calc(100% - 11px), 9.5% calc(100% - 3px), 6% calc(100% - 12px), 2.5% calc(100% - 6px), 0 calc(100% - 13px));
}
.dropzone:hover, .dropzone:focus-within { border-color: var(--accent); }
.dropzone.dragover {
  border-color: var(--accent);
  transform: translateY(-3px);
  filter: drop-shadow(0 14px 22px rgba(188, 57, 8, 0.25));
}
.dropzone input[type='file'] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.dz-icon { width: 3.1rem; height: 3.1rem; color: var(--ink-faint); margin-bottom: 0.4rem; }
.dropzone.dragover .dz-icon, .dropzone:hover .dz-icon { color: var(--ink-soft); }
.dz-title { font-family: var(--serif); font-weight: 600; font-size: 1.6rem; letter-spacing: -0.01em; }
.dz-or { color: var(--ink-faint); font-size: 0.9rem; }
.dz-formats { margin-top: 1.1rem; font-family: var(--mono); font-size: 0.8rem; color: var(--ink-faint); text-align: center; }

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.62rem 1.35rem;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, transform 0.06s ease, border-color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--sheet); border-color: var(--accent-deep); }
.btn-primary:hover { background: var(--accent-deep); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn[disabled] { opacity: 0.45; cursor: default; }

.demo-line { margin-top: 1.6rem; text-align: center; color: var(--ink-soft); font-size: 0.95rem; }
.linklike {
  font: inherit; color: var(--accent); background: none; border: none; cursor: pointer;
  text-decoration: underline; text-underline-offset: 3px; padding: 0;
}
.linklike:hover { color: var(--accent-deep); }

/* ---------- trust strip ---------- */
.trust {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.2rem;
  margin: 3.2rem 0 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}
.trust-k {
  display: block;
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.45rem;
}
.trust-v { font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- results ---------- */
.result { margin: 3rem 0 1rem; animation: rise 0.5s cubic-bezier(0.2, 0.7, 0.2, 1) both; }

.diagnosis {
  position: relative;
  background: var(--sheet);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.6rem 1.8rem 1.5rem;
  overflow: hidden;
}
/* the kintsugi seam: a gold thread across a mended sheet */
.diagnosis.mended::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--gold) 12%, #e6c65a 38%, var(--gold) 55%, transparent 78%, var(--gold) 92%, transparent 100%);
}
.diag-head { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem 1rem; }
.badge {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.32rem 0.7rem;
  border-radius: 99px;
  border: 1px solid;
}
.badge.intact { color: var(--ok); background: var(--ok-wash); border-color: var(--ok); }
.badge.partial, .badge.salvaged { color: var(--warn); background: var(--warn-wash); border-color: var(--warn); }
.badge.dead { color: var(--dead); background: var(--dead-wash); border-color: var(--dead); }
.diag-file { font-family: var(--mono); font-size: 0.86rem; color: var(--ink-soft); overflow-wrap: anywhere; }
.diag-sum { font-family: var(--serif); font-size: 1.35rem; font-weight: 600; margin-top: 0.9rem; letter-spacing: -0.01em; }
.diag-notes { margin: 0.7rem 0 0; padding-left: 1.1rem; color: var(--ink-soft); font-size: 0.95rem; }
.diag-notes li { margin-top: 0.3rem; }

.parts { margin-top: 1.1rem; border-top: 1px dashed var(--line); padding-top: 0.9rem; }
.parts summary {
  font-family: var(--mono); font-size: 0.8rem; color: var(--ink-soft); cursor: pointer;
  list-style: none; user-select: none;
}
.parts summary::before { content: '▸ '; }
.parts[open] summary::before { content: '▾ '; }
.parts table { margin-top: 0.6rem; border-collapse: collapse; font-family: var(--mono); font-size: 0.78rem; width: 100%; }
.parts td { padding: 0.18rem 0.9rem 0.18rem 0; color: var(--ink-soft); overflow-wrap: anywhere; }
.parts td.st-ok { color: var(--ok); }
.parts td.st-part { color: var(--warn); }

.actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.3rem; }

/* recovered document sheet */
.doc-sheet {
  background: var(--sheet);
  border: 1px solid var(--sheet-edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 48rem;
  margin: 1.6rem auto 0;
  padding: clamp(1.6rem, 5vw, 3.2rem);
}
.doc-sheet h2, .doc-sheet h3, .doc-sheet h4 {
  font-family: var(--serif); font-weight: 600; letter-spacing: -0.01em;
  margin: 1.5em 0 0.45em; line-height: 1.2;
}
.doc-sheet h2 { font-size: 1.65rem; } .doc-sheet h3 { font-size: 1.32rem; } .doc-sheet h4 { font-size: 1.12rem; }
.doc-sheet > :first-child { margin-top: 0; }
.doc-sheet p { margin: 0.55em 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.doc-sheet li { margin: 0.25em 0 0.25em 1.4em; white-space: pre-wrap; overflow-wrap: anywhere; }
.doc-sheet .tbl-wrap { overflow-x: auto; margin: 1em 0; }
.doc-sheet table { border-collapse: collapse; font-size: 0.92rem; min-width: 50%; }
.doc-sheet td, .doc-sheet th { border: 1px solid var(--line); padding: 0.4rem 0.65rem; text-align: left; vertical-align: top; }
.doc-sheet th { font-weight: 600; background: rgba(33, 29, 22, 0.035); font-family: var(--sans); }
.truncation-mark {
  margin: 1.6em 0 0.4em; padding: 0.7rem 1rem;
  border-left: 3px solid var(--warn);
  background: var(--warn-wash);
  font-size: 0.9rem; color: var(--ink-soft);
  border-radius: 0 6px 6px 0;
}
.more-note { text-align: center; font-family: var(--mono); font-size: 0.8rem; color: var(--ink-faint); margin-top: 1.4rem; }

/* slides */
.slide-card { position: relative; margin-top: 1.2rem; }
.slide-tab {
  font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-faint); margin-bottom: 0.3rem;
}
.slide-card .doc-sheet { margin: 0; max-width: none; padding: 1.4rem 1.8rem; }

/* sqlite / sheets tables */
.data-block { margin-top: 1.6rem; }
.data-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.7rem 1rem; margin-bottom: 0.5rem; }
.data-head h3 { font-family: var(--serif); font-size: 1.25rem; font-weight: 600; }
.data-count { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint); }
.data-wrap { overflow-x: auto; background: var(--sheet); border: 1px solid var(--sheet-edge); border-radius: var(--radius); box-shadow: var(--shadow); }
.data-wrap table { border-collapse: collapse; font-size: 0.88rem; width: 100%; }
.data-wrap th {
  font-family: var(--mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em;
  text-align: left; color: var(--ink-soft); background: rgba(33, 29, 22, 0.045);
  padding: 0.5rem 0.75rem; border-bottom: 1.5px solid var(--line); white-space: nowrap;
}
.data-wrap td { padding: 0.42rem 0.75rem; border-bottom: 1px solid rgba(33, 29, 22, 0.07); vertical-align: top; max-width: 26rem; overflow-wrap: anywhere; }
.data-wrap tr:last-child td { border-bottom: none; }

/* recovered images */
.img-grid { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1rem; }
.img-grid a { display: block; border: 1px solid var(--line); border-radius: 6px; padding: 0.35rem; background: var(--sheet); }
.img-grid img { display: block; max-width: 9rem; max-height: 7rem; object-fit: contain; }
.img-grid .img-name { display: block; font-family: var(--mono); font-size: 0.66rem; color: var(--ink-faint); margin-top: 0.25rem; max-width: 9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* raw salvage view */
.raw-run { font-family: var(--mono); font-size: 0.86rem; white-space: pre-wrap; overflow-wrap: anywhere; }
.raw-run + .raw-run { border-top: 1px dashed var(--line); margin-top: 0.9rem; padding-top: 0.9rem; }

.result-foot { text-align: center; margin-top: 2rem; }
.pass-note { margin-top: 1.2rem; font-size: 0.92rem; color: var(--ink-soft); text-align: center; }

/* ---------- plain sections ---------- */
.plain { margin-top: 4.6rem; max-width: 52rem; }
.plain h2 {
  font-family: var(--serif); font-weight: 600; font-size: 1.8rem; letter-spacing: -0.015em;
  margin-bottom: 1rem;
}
.plain p { color: var(--ink-soft); margin-top: 0.7rem; }
.plain p strong { color: var(--ink); }
.plain a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(188, 57, 8, 0.35); }
.plain a:hover { border-color: var(--accent); }
.plain code { font-family: var(--mono); font-size: 0.85em; background: rgba(33, 29, 22, 0.06); padding: 0.1em 0.35em; border-radius: 4px; }

.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 2.4rem; margin-top: 1.4rem; }
.cols h3 { font-family: var(--mono); font-size: 0.8rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.7rem; }
.ok-h { color: var(--ok); } .no-h { color: var(--dead); }
.checks, .crosses { list-style: none; }
.checks li, .crosses li { position: relative; padding-left: 1.5rem; margin-top: 0.55rem; font-size: 0.95rem; color: var(--ink-soft); }
.checks li::before { content: '✓'; position: absolute; left: 0; color: var(--ok); font-weight: 600; }
.crosses li::before { content: '✕'; position: absolute; left: 0; color: var(--dead); font-weight: 600; }

.rescue-list { margin: 1rem 0 0 1.2rem; }
.rescue-list li { margin-top: 0.8rem; color: var(--ink-soft); }
.rescue-list strong { color: var(--ink); }

.fallback.spotlight {
  background: var(--sheet);
  border: 1.5px solid var(--warn);
  border-radius: var(--radius);
  padding: 1.8rem 2rem;
  box-shadow: var(--shadow);
}

.lineage { font-size: 0.9rem; }

/* ---------- footer ---------- */
.foot {
  border-top: 1px solid var(--line);
  margin-top: 4.5rem;
  padding: 2rem 1.5rem 2.6rem;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
}
.foot-mark { font-family: var(--serif); font-weight: 700; }
.foot a { color: var(--ink-soft); }
.foot a:hover { color: var(--accent); }
.foot-pass { margin-top: 0.5rem; font-style: italic; color: var(--ink-faint); }

.only-mobile { display: none; }
.noscript-note { max-width: 72rem; margin: 0 auto; padding: 1rem 1.5rem; color: var(--accent-deep); font-size: 0.95rem; }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  body { font-size: 1rem; }
  .hero { padding-top: 1.7rem; }
  .hero h1 { font-size: clamp(1.9rem, 8vw, 2.3rem); }
  .lede { margin-top: 0.9rem; font-size: 1.05rem; }
  .only-desktop { display: none; }
  .only-mobile { display: inline; }
  .dz-icon { margin-bottom: 0; }
  .trust { grid-template-columns: 1fr; gap: 1.4rem; }
  .cols { grid-template-columns: 1fr; gap: 1.8rem; }
  .dropzone { min-height: 14rem; }
  .actions .btn { flex: 1 1 auto; text-align: center; }
  .fallback.spotlight { padding: 1.3rem 1.2rem; }
}

/* ---------- focus visibility ---------- */
:focus-visible { outline: 2.5px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.rescue-zone:focus-within { outline: 2.5px solid var(--accent); outline-offset: 4px; border-radius: var(--radius); }