/* ============================================================
   PTW — Site Register
   An operational permit-to-work logbook, styled as an engineered
   spec sheet. Cool steel neutrals keep safety-orange as a *signal*
   (used sparingly, the way hi-vis works on a real site); monospace
   carries identifiers and data because permit numbers are code-like;
   a left spine colour-codes each permit's maintenance category.
   Chosen for sun-readable contrast — near-black ink on light steel,
   deep orange accent, all ≥4.5:1 against their backgrounds.
   ============================================================ */
:root {
  --signal: #c2410c;        /* safety orange — reserved for primary/urgent */
  --signal-dark: #9a3412;
  --signal-tint: #fff1e8;   /* faint orange wash for hovers */

  --ink: #14181d;           /* near-black slate — text + header band */
  --ink-soft: #2b333c;
  --muted: #5b6672;
  --hairline: #dbe0e6;
  --hairline-soft: #e8ecf0;

  --bg: #f4f6f8;            /* cool light steel (not warm cream) */
  --card: #ffffff;
  --field: #fbfcfd;
  --danger: #b02a1c;

  /* maintenance-category coding — carried by the card spine + tag dot */
  --cat-preventive: #2563a8;  /* steel blue — planned */
  --cat-reactive:   #c2410c;  /* orange — urgent response */
  --cat-cleaning:   #0f766e;  /* teal — housekeeping */
  --cat-others:     #6b7280;  /* neutral grey */

  --mono: ui-monospace, "Cascadia Code", "Cascadia Mono", "Consolas",
          "SFMono-Regular", "Roboto Mono", monospace;
  --sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;

  --radius: 6px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  /* faint blueprint-grid texture — barely there, reads as technical paper */
  background-image:
    linear-gradient(var(--hairline-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline-soft) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: -1px -1px;
}

/* Accessible focus for everything interactive */
:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- signature: hazard band + header ---------- */
.hazard-bar {
  height: 4px;
  background: repeating-linear-gradient(
    -45deg, var(--signal) 0 10px, var(--ink) 10px 20px);
}

.topbar { background: var(--ink); color: #fff; }
.topbar-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0.75rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand {
  color: #fff; text-decoration: none; font-size: 1.05rem; font-weight: 600;
  letter-spacing: 0.01em; display: inline-flex; align-items: center;
}
.brand-badge {
  font-family: var(--mono); background: var(--signal); color: #fff;
  border-radius: 4px; padding: 0.12rem 0.45rem; font-weight: 700;
  letter-spacing: 0.12em; margin-right: 0.6rem; font-size: 0.82rem;
}
.topbar nav { display: flex; align-items: center; gap: 1.4rem; }
.topbar nav a {
  color: #cbd3db; text-decoration: none; font-size: 0.9rem;
  font-weight: 500; padding: 0.15rem 0; border-bottom: 2px solid transparent;
  transition: color 0.12s, border-color 0.12s;
}
.topbar nav a:hover { color: #fff; border-bottom-color: var(--signal); }
/* the one advertised primary path gets the signal colour */
.topbar nav a.nav-cta {
  background: var(--signal); color: #fff; border: 0; border-radius: 4px;
  padding: 0.4rem 0.85rem; font-weight: 600; font-size: 0.86rem;
}
.topbar nav a.nav-cta:hover { background: var(--signal-dark); color: #fff; }

.container { max-width: var(--maxw); margin: 1.75rem auto; padding: 0 1.25rem; }
.footer {
  max-width: var(--maxw); margin: 2.5rem auto 1.5rem; padding: 1rem 1.25rem;
  color: var(--muted); font-size: 0.78rem; text-align: center;
  font-family: var(--mono); letter-spacing: 0.02em;
  border-top: 1px solid var(--hairline);
}

/* ---------- typography ---------- */
h1 {
  font-size: 1.55rem; margin: 0; font-weight: 650; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap;
}
/* section headers as spec-sheet eyebrows */
h2 {
  font-family: var(--mono); font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--muted);
  margin: 0 0 1rem; padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--hairline-soft);
  display: flex; align-items: baseline; gap: 0.5rem;
}
h2::before {
  content: ""; width: 7px; height: 7px; background: var(--signal);
  display: inline-block; border-radius: 1px; transform: translateY(-1px);
}
.muted { color: var(--muted); font-weight: 400; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 0.3rem 0 1rem; }
.warn { color: var(--danger); font-size: 0.85rem; }

.page-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem;
}
.head-actions, .permit-actions { display: flex; gap: 0.5rem; align-items: center; }
.head-actions form, .permit-actions form { margin: 0; }

.card {
  background: var(--card); border: 1px solid var(--hairline);
  border-radius: var(--radius); padding: 1.35rem 1.5rem; margin-bottom: 1.4rem;
}

.empty {
  background: var(--card); border: 1px dashed var(--hairline);
  border-radius: var(--radius); padding: 2.5rem; text-align: center;
  color: var(--muted); font-size: 0.95rem;
}
.empty a { color: var(--signal); font-weight: 600; }

/* ---------- buttons — orange is reserved for the one primary action ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.46rem 0.95rem; border-radius: var(--radius);
  border: 1px solid var(--hairline); background: #fff; color: var(--ink);
  font-size: 0.88rem; font-weight: 500; font-family: var(--sans);
  cursor: pointer; text-decoration: none; transition: background 0.12s, border-color 0.12s;
}
.btn:hover { background: var(--bg); border-color: #c4ccd4; }
.btn-primary {
  background: var(--signal); border-color: var(--signal); color: #fff; font-weight: 600;
}
.btn-primary:hover { background: var(--signal-dark); border-color: var(--signal-dark); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-ghost:hover { background: var(--bg); color: var(--ink); border-color: transparent; }
.btn-danger { background: #fff; color: var(--danger); border-color: #e6c4bf; }
.btn-danger:hover { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-link-danger {
  background: none; border: none; color: var(--danger); cursor: pointer;
  font-size: 0.78rem; padding: 0; text-decoration: underline; font-family: var(--sans);
}

/* ---------- flash ---------- */
.flash {
  padding: 0.7rem 1rem; border-radius: var(--radius); margin-bottom: 0.9rem;
  font-size: 0.9rem; border-left: 4px solid;
}
.flash-success { background: #e9f5ee; color: #14603f; border-color: #2f8f63; }
.flash-error   { background: #fbeceb; color: #96281b; border-color: var(--danger); }

/* ---------- search ---------- */
.search { display: flex; gap: 0.5rem; }
.search input {
  padding: 0.5rem 0.75rem; border: 1px solid var(--hairline);
  border-radius: var(--radius); min-width: 280px; font-size: 0.9rem;
  font-family: var(--sans); background: var(--field); color: var(--ink);
}
.search input:focus { outline: 2px solid var(--signal); border-color: var(--signal); }
.search input::placeholder { color: #97a1ab; }

/* ---------- permit list ---------- */
.permit-list { display: flex; flex-direction: column; gap: 0.9rem; }
.permit-card {
  --spine: var(--hairline);
  background: var(--card); border: 1px solid var(--hairline);
  border-left: 4px solid var(--spine); border-radius: var(--radius);
  padding: 1.05rem 1.3rem; transition: border-color 0.12s, box-shadow 0.12s;
}
.permit-card:hover {
  border-color: #c4ccd4; border-left-color: var(--spine);
  box-shadow: 0 1px 3px rgba(20, 24, 29, 0.06);
}
/* category → spine colour (also drives the tag dot below) */
.permit-card[data-category="Preventive"] { --spine: var(--cat-preventive); }
.permit-card[data-category="Reactive"]   { --spine: var(--cat-reactive); }
.permit-card[data-category="Cleaning"]   { --spine: var(--cat-cleaning); }
.permit-card[data-category="Others"]     { --spine: var(--cat-others); }

.permit-card-head { display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; }
.permit-no {
  font-family: var(--mono); font-size: 1.02rem; font-weight: 700;
  color: var(--ink); text-decoration: none; letter-spacing: 0.01em;
}
.permit-no:hover { color: var(--signal); }

/* maintenance-category tag: outline chip + colour dot matching the spine */
.tag {
  --dot: var(--cat-others);
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--mono); font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--ink-soft); background: #fff;
  border: 1px solid var(--hairline); padding: 0.15rem 0.55rem; border-radius: 3px;
}
.tag::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--dot);
}
.tag[data-category="Preventive"] { --dot: var(--cat-preventive); }
.tag[data-category="Reactive"]   { --dot: var(--cat-reactive); }
.tag[data-category="Cleaning"]   { --dot: var(--cat-cleaning); }
.tag[data-category="Others"]     { --dot: var(--cat-others); }

.permit-meta {
  display: flex; flex-wrap: wrap; gap: 0.35rem 2.2rem; margin: 0.75rem 0 0;
}
.permit-meta div { display: flex; flex-direction: column; gap: 0.1rem; font-size: 0.85rem; }
.permit-meta dt {
  font-family: var(--mono); font-size: 0.66rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.permit-meta dd { margin: 0; color: var(--ink); }
.permit-desc {
  color: var(--ink-soft); font-size: 0.9rem; margin: 0.7rem 0 0;
  padding-left: 0.8rem; border-left: 2px solid var(--hairline-soft);
  overflow-wrap: anywhere;   /* wrap pathological unbroken strings */
}
.permit-meta dd, .detail-grid dd { overflow-wrap: anywhere; }

.permit-actions { margin-top: 0.95rem; padding-top: 0.85rem; border-top: 1px solid var(--hairline-soft); }

/* thumbnail strip on the browse page, grouped by photo category */
.thumbs { display: flex; flex-direction: column; gap: 0.7rem; margin-top: 0.85rem; min-height: 24px; }
.thumb-group-label {
  display: block; font-family: var(--mono); font-size: 0.66rem; font-weight: 600;
  color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.3rem;
}
.thumb-group-imgs { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.thumbs img {
  width: 68px; height: 68px; object-fit: cover; border-radius: 4px;
  border: 1px solid var(--hairline); display: block; transition: outline 0.1s;
}
.thumbs a:hover img { outline: 2px solid var(--signal); outline-offset: 1px; }
.thumbs-loading, .thumbs-none, .thumbs-more { color: var(--muted); font-size: 0.8rem; }
.thumbs-more { font-family: var(--mono); align-self: center; }

/* ---------- form ---------- */
.field-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem 1.5rem; margin-bottom: 1.5rem;
}
.field { display: flex; flex-direction: column; gap: 0.35rem; }
.field-wide { grid-column: 1 / -1; }
.field label {
  font-family: var(--mono); font-size: 0.7rem; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.req { color: var(--signal); }
.field input, .field select, .field textarea {
  padding: 0.55rem 0.7rem; border: 1px solid var(--hairline); border-radius: var(--radius);
  font-size: 0.92rem; font-family: var(--sans); background: var(--field); color: var(--ink);
  transition: border-color 0.12s, background 0.12s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--signal); outline-offset: 0; border-color: var(--signal); background: #fff;
}
.field textarea { resize: vertical; min-height: 5.5rem; }
.form-actions { display: flex; justify-content: flex-end; padding-top: 0.4rem; }

/* ---------- detail ---------- */
.detail-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.05rem 1.7rem; margin: 0;
}
.detail-grid dt {
  font-family: var(--mono); font-size: 0.68rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.detail-grid dd { margin: 0.25rem 0 0; font-size: 0.95rem; color: var(--ink); }
/* the permit number is an identifier — render detail dates/ids in mono too */
.detail-grid dd { font-variant-numeric: tabular-nums; }

/* ---------- photos ---------- */
.upload-form {
  border: 1px dashed var(--hairline); border-radius: var(--radius);
  padding: 1rem 1.1rem; margin-bottom: 1.4rem; background: var(--field);
}
.upload-row { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }
.upload-row select, .upload-row input[type="file"] {
  padding: 0.5rem 0.65rem; border: 1px solid var(--hairline); border-radius: var(--radius);
  font-size: 0.9rem; background: #fff; font-family: var(--sans); color: var(--ink);
}
.upload-row input[type="file"] { padding: 0.4rem 0.5rem; }

.stage-section { margin: 0.7rem 0 0; }
.stage-thumbs { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.stage-thumb { position: relative; }
.stage-thumb img {
  width: 82px; height: 82px; object-fit: cover; border-radius: 4px;
  border: 1px solid var(--hairline); display: block;
}
.stage-remove {
  position: absolute; top: -7px; right: -7px; width: 22px; height: 22px;
  border-radius: 50%; border: 1px solid var(--danger); background: #fff;
  color: var(--danger); font-size: 0.95rem; line-height: 1; cursor: pointer; padding: 0;
}
.stage-remove:hover { background: var(--danger); color: #fff; }
.upload-actions {
  display: flex; justify-content: flex-end; align-items: center; gap: 0.8rem;
  margin: 0.9rem 0 0;
}

.photo-cat {
  font-family: var(--mono); font-size: 0.78rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft);
  margin: 1.4rem 0 0.6rem; padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--hairline-soft);
}
.gallery {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.9rem;
}
.photo { margin: 0; }
.photo img {
  width: 100%; height: 135px; object-fit: cover; border-radius: 4px;
  border: 1px solid var(--hairline); display: block; transition: outline 0.1s;
}
.photo a:hover img { outline: 2px solid var(--signal); outline-offset: 1px; }
.photo figcaption {
  display: flex; justify-content: space-between; align-items: center;
  gap: 0.4rem; margin-top: 0.35rem;
}
.photo-name {
  font-size: 0.7rem; color: var(--muted); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; font-family: var(--mono);
}
.photo figcaption form { margin: 0; }

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .container { margin: 1.25rem auto; }
  .page-head, .search { flex-direction: column; align-items: stretch; }
  .search input { min-width: 0; width: 100%; }
  .topbar nav { gap: 0.9rem; }
  .permit-meta { gap: 0.5rem 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}