/*
 * Sheet Check — screen styles.
 *
 * A register is a document, so this reads like one: paper, ink, ruled rows.
 * The only colour is the severity of a finding, which is the one thing that
 * should catch the eye.
 */

:root {
  --c-paper: #f6f4ef;
  --c-panel: #fffefb;
  --c-ink: #22262c;
  --c-ink-soft: #5c636e;
  --c-rule: #dcd7cd;
  --c-rule-soft: #ece8e0;

  --c-error: #9a3325;
  --c-error-bg: #f9eae6;
  --c-warning: #8a5a12;
  --c-warning-bg: #fbf1df;
  --c-note: #3d5a80;
  --c-note-bg: #eaf0f7;
  --c-clear: #2f6b46;
  --c-clear-bg: #e6f0e8;
  --c-focus: #2f5d8c;

  --radius: 6px;
  --gap: 1rem;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --c-paper: #16181c;
    --c-panel: #1d2025;
    --c-ink: #e6e3dc;
    --c-ink-soft: #a3a8b2;
    --c-rule: #32363d;
    --c-rule-soft: #262a30;

    --c-error: #e79484;
    --c-error-bg: #2e1f1c;
    --c-warning: #e0bc7a;
    --c-warning-bg: #2b2419;
    --c-note: #9dc0e6;
    --c-note-bg: #1b242e;
    --c-clear: #7fc79a;
    --c-clear-bg: #1e2b23;
    --c-focus: #7fb0e0;
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  padding: 1.25rem clamp(1rem, 3vw, 2rem) 2.5rem;
  background: var(--c-paper);
  color: var(--c-ink);
  font: 400 15px/1.55 var(--font);
  -webkit-text-size-adjust: 100%;
}

h1, h2, h3, h4 { line-height: 1.25; margin: 0; font-weight: 600; }
h1 { font-size: 1.4rem; letter-spacing: -0.01em; }
h3 { font-size: 0.95rem; margin: 1.6rem 0 0.6rem; }
h4 { font-size: 0.9rem; }
p { margin: 0; }
a { color: var(--c-focus); }
code {
  font: 0.88em var(--font-mono);
  background: var(--c-rule-soft);
  padding: 0.05em 0.3em;
  border-radius: 3px;
}

:where(a, button, input, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--c-focus);
  outline-offset: 2px;
}

.skip-link { position: absolute; left: -9999px; }
.skip-link:focus {
  left: 1rem; top: 1rem; z-index: 10;
  padding: 0.5rem 0.75rem;
  background: var(--c-panel);
  border: 1px solid var(--c-rule);
  border-radius: var(--radius);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.muted { color: var(--c-ink-soft); font-weight: 400; }

/* ---- Masthead ---- */

.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--gap);
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--c-rule);
}

.masthead__title p { color: var(--c-ink-soft); font-size: 0.9rem; margin-top: 0.15rem; }
.masthead__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.intro {
  max-width: 68ch;
  margin: 0.9rem 0 1.25rem;
  color: var(--c-ink-soft);
  font-size: 0.9rem;
}

/* ---- Layout ---- */

.layout {
  display: grid;
  gap: var(--gap);
  grid-template-columns: minmax(300px, 400px) minmax(0, 1fr);
  align-items: start;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
}

.panel {
  background: var(--c-panel);
  border: 1px solid var(--c-rule);
  border-radius: var(--radius);
  padding: 1rem;
}

.panel__title,
.block__title {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-ink-soft);
  font-weight: 600;
}

.panel__title { margin-bottom: 0.75rem; }

/* ---- Inputs ---- */

.inputs { display: grid; gap: 1.1rem; }

.block {
  padding-top: 0.9rem;
  border-top: 1px solid var(--c-rule);
}
.block:first-of-type { border-top: 0; padding-top: 0; }

.field { display: grid; gap: 0.3rem; min-width: 0; margin-top: 0.55rem; }

.grid {
  display: grid;
  gap: 0.5rem 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

label { font-size: 0.8rem; font-weight: 500; color: var(--c-ink-soft); }

input[type="text"],
textarea {
  width: 100%;
  min-width: 0;
  padding: 0.45rem 0.55rem;
  font: 400 0.92rem/1.5 var(--font-mono);
  color: var(--c-ink);
  background: var(--c-paper);
  border: 1px solid var(--c-rule);
  border-radius: 4px;
}
/* A register is a table: one row per line, scrolled sideways rather than
   wrapped, so a long sheet name does not make every row three lines tall. */
textarea {
  resize: vertical;
  min-height: 11rem;
  white-space: pre;
  overflow-x: auto;
  tab-size: 8;
}

.checks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.3rem 0.75rem;
  margin-top: 0.6rem;
}

.field--check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0;
}
.field--check label { font-size: 0.88rem; color: var(--c-ink); }

.hint {
  margin-top: 0.35rem;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--c-ink-soft);
}

.button {
  padding: 0.4rem 0.7rem;
  font: 500 0.85rem var(--font);
  color: var(--c-ink);
  background: var(--c-panel);
  border: 1px solid var(--c-rule);
  border-radius: 4px;
  cursor: pointer;
}
.button:hover { border-color: var(--c-ink-soft); }
.button--small { padding: 0.3rem 0.55rem; font-size: 0.8rem; }
.button:active { transform: translateY(1px); }

@media (prefers-reduced-motion: reduce) {
  .button:active { transform: none; }
}

/* ---- Drop zone ---- */

.drop {
  margin-top: 0.8rem;
  padding: 1rem;
  text-align: center;
  border: 1.5px dashed var(--c-rule);
  border-radius: var(--radius);
  background: var(--c-paper);
}
.drop[data-dropping] { border-color: var(--c-focus); background: var(--c-note-bg); }
.drop__lead { font-size: 0.88rem; color: var(--c-ink-soft); }
.drop__or { display: flex; flex-wrap: wrap; gap: 0.4rem; justify-content: center; margin-top: 0.6rem; }

.pdf-note {
  margin-top: 0.7rem;
  padding: 0.45rem 0.6rem;
  font-size: 0.82rem;
  border-radius: 4px;
  border: 1px solid var(--c-rule);
  color: var(--c-ink-soft);
}
.pdf-note[data-state="ok"] { color: var(--c-clear); background: var(--c-clear-bg); border-color: transparent; }
.pdf-note[data-state="bad"] { color: var(--c-warning); background: var(--c-warning-bg); border-color: transparent; }

/* ---- Report ---- */

.verdict {
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
}
.verdict[data-state="error"] { color: var(--c-error); background: var(--c-error-bg); }
.verdict[data-state="warning"] { color: var(--c-warning); background: var(--c-warning-bg); }
.verdict[data-state="note"] { color: var(--c-note); background: var(--c-note-bg); }
.verdict[data-state="clear"] { color: var(--c-clear); background: var(--c-clear-bg); }

.counts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.5rem;
  margin-top: 0.7rem;
}

.count {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--c-rule);
  border-radius: 4px;
  background: var(--c-paper);
}
.count__n {
  display: block;
  font: 600 1.3rem/1.1 var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.count__label {
  display: block;
  margin-top: 0.1rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--c-ink-soft);
}
.count[data-kind="error"] .count__n { color: var(--c-error); }
.count[data-kind="warning"] .count__n { color: var(--c-warning); }
.count[data-kind="note"] .count__n { color: var(--c-note); }

.parse-note {
  margin-top: 0.7rem;
  font-size: 0.8rem;
  color: var(--c-ink-soft);
}

.warnings {
  margin: 0.6rem 0 0;
  padding: 0.5rem 0.6rem 0.5rem 1.6rem;
  font-size: 0.82rem;
  color: var(--c-warning);
  background: var(--c-warning-bg);
  border-radius: 4px;
}
.warnings li + li { margin-top: 0.25rem; }

.export-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--c-rule);
}

.empty {
  margin-top: 1rem;
  padding: 1rem;
  font-size: 0.88rem;
  color: var(--c-ink-soft);
  background: var(--c-paper);
  border: 1px dashed var(--c-rule);
  border-radius: var(--radius);
}

.findings { margin-top: 0.6rem; }

.group {
  margin: 1.5rem 0 0.5rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.group[data-severity="error"] { color: var(--c-error); }
.group[data-severity="warning"] { color: var(--c-warning); }
.group[data-severity="note"] { color: var(--c-note); }

.finding {
  padding: 0.7rem 0.8rem;
  margin-bottom: 0.6rem;
  border-radius: 4px;
  border-left: 3px solid var(--c-rule);
  background: var(--c-paper);
  break-inside: avoid;
}
.finding[data-severity="error"] { border-left-color: var(--c-error); }
.finding[data-severity="warning"] { border-left-color: var(--c-warning); }
.finding[data-severity="note"] { border-left-color: var(--c-note); }

.finding__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.tag {
  flex: none;
  padding: 0.1rem 0.4rem;
  font: 600 0.68rem/1.4 var(--font);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 3px;
}
.tag[data-severity="error"] { color: var(--c-error); background: var(--c-error-bg); }
.tag[data-severity="warning"] { color: var(--c-warning); background: var(--c-warning-bg); }
.tag[data-severity="note"] { color: var(--c-note); background: var(--c-note-bg); }

.finding__detail {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--c-ink-soft);
}

.finding__sheets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin: 0.55rem 0 0;
  padding: 0;
  list-style: none;
}
.finding__sheets li {
  padding: 0.12rem 0.4rem;
  font: 0.8rem var(--font-mono);
  background: var(--c-panel);
  border: 1px solid var(--c-rule);
  border-radius: 3px;
}
.finding__sheets--dense li {
  padding: 0 0.2rem;
  border: 0;
  background: none;
}

/* ---- Coverage ---- */

.coverage {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
}
.coverage__col {
  padding: 0.6rem 0.7rem;
  background: var(--c-paper);
  border: 1px solid var(--c-rule);
  border-radius: 4px;
}
.coverage h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--c-ink-soft);
}
.coverage ul { margin: 0.4rem 0 0; padding-left: 1.1rem; font-size: 0.82rem; }
.coverage li + li { margin-top: 0.2rem; }

/* ---- The register table ---- */

.table-scroll { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.83rem;
}
.data-table th,
.data-table td {
  padding: 0.3rem 0.45rem;
  text-align: left;
  border-bottom: 1px solid var(--c-rule-soft);
  vertical-align: top;
}
.data-table thead th {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--c-ink-soft);
  border-bottom: 1px solid var(--c-rule);
  white-space: nowrap;
}
.data-table .numeric { text-align: right; font-variant-numeric: tabular-nums; }
.data-table .read-as { font-family: var(--font-mono); white-space: nowrap; }
.data-table tr[data-valid="false"] .read-as { color: var(--c-warning); }
.data-table tr[data-valid="false"] { background: var(--c-warning-bg); }

/* ---- Status and footer ---- */

.status {
  min-height: 1.3rem;
  margin-top: var(--gap);
  font-size: 0.85rem;
  color: var(--c-ink-soft);
}

.footer {
  margin-top: 1.5rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--c-rule);
  font-size: 0.85rem;
  color: var(--c-ink-soft);
  display: grid;
  gap: 0.4rem;
  max-width: 72ch;
}