/* ============================================================
   Product Catalog System — stylesheet
   Design idea: a physical stock ledger / index-card catalog.
   Kraft-paper background, ink-green text, brass-stamp accent,
   monospace numerals for prices — like a real inventory book.
   ============================================================ */

:root {
  --paper: #ECE4D0;        /* kraft-paper background */
  --paper-light: #F8F4E8;  /* index-card / panel surface */
  --ink: #2B3327;          /* deep ledger-ink green-black */
  --ink-soft: #5D6355;     /* muted secondary text */
  --accent: #B6812D;       /* brass stamp */
  --accent-deep: #8C5F1D;  /* pressed brass */
  --line: #C9BC9C;         /* hairline rule, aged paper edge */
  --danger: #A13D2B;       /* stamp red — errors / delete / empty state */
  --danger-deep: #7E2E20;
  --white: #FFFFFF;
  --radius: 3px;
  --shadow: 0 1px 2px rgba(43, 51, 39, 0.08), 0 6px 16px rgba(43, 51, 39, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  background-image:
    repeating-linear-gradient(0deg, rgba(43,51,39,0.025) 0px, rgba(43,51,39,0.025) 1px, transparent 1px, transparent 32px);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* ---------- Header / folder-tab navigation ---------- */
.site-header {
  padding: 36px 0 0;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 22px;
}

.brand-mark {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  flex: none;
}

.brand-name {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.01em;
}

.brand-sub {
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

nav.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--ink);
}

nav.tabs a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 11px 18px 9px;
  background: var(--paper-light);
  border: 1.5px solid var(--line);
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  position: relative;
  top: 2px;
  transition: color 0.15s ease, background 0.15s ease;
}

nav.tabs a:hover {
  color: var(--ink);
  background: #fff;
}

nav.tabs a.active {
  color: var(--ink);
  background: var(--ink);
  color: var(--paper-light);
  border-color: var(--ink);
}

/* ---------- Hero / page intro ---------- */
.hero {
  padding: 46px 0 30px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 34px;
}

.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 10px;
}

.hero h1 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 600;
  font-size: 40px;
  line-height: 1.08;
  margin: 0 0 14px;
  max-width: 20ch;
}

.hero p {
  color: var(--ink-soft);
  font-size: 16px;
  max-width: 56ch;
  margin: 0 0 22px;
}

.stat-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.stat-card {
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 20px;
  min-width: 140px;
}

.stat-card .num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 26px;
  font-weight: 600;
}

.stat-card .label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- Cards / panels ---------- */
.panel {
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 30px 32px;
  margin-bottom: 28px;
}

.panel h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 6px;
}

.panel .desc {
  color: var(--ink-soft);
  font-size: 14px;
  margin: 0 0 22px;
}

/* ---------- Forms ---------- */
form.stack { display: flex; flex-direction: column; gap: 18px; max-width: 420px; }

.field label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.field input[type="text"],
.field input[type="number"],
.field input[type="file"] {
  width: 100%;
  padding: 11px 13px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.15s ease;
}

.field input[type="text"]:focus,
.field input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
}

.field .hint { font-size: 12px; color: var(--ink-soft); margin-top: 5px; }

.price-wrap { position: relative; }
.price-wrap .currency {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  font-family: "IBM Plex Mono", monospace;
  color: var(--ink-soft);
  font-size: 14px;
}
.price-wrap input { padding-left: 44px !important; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--ink);
  color: var(--paper-light);
  border: none;
  border-radius: var(--radius);
  padding: 12px 22px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}
.btn:hover { background: var(--accent-deep); }
.btn:active { transform: translateY(1px); }

.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}
.btn.ghost:hover { background: var(--ink); color: var(--paper-light); }

.btn.danger { background: var(--danger); }
.btn.danger:hover { background: var(--danger-deep); }

.btn.small { padding: 7px 14px; font-size: 11px; }

/* ---------- Alerts ---------- */
.alert {
  border-radius: var(--radius);
  padding: 13px 16px;
  font-size: 14px;
  margin-bottom: 22px;
  border: 1.5px solid transparent;
}
.alert.ok { background: #EEF3E3; border-color: #9CB380; color: #3A4A2A; }
.alert.err { background: #F6E7E2; border-color: var(--danger); color: var(--danger-deep); }

/* ---------- Search ---------- */
.search-bar { display: flex; gap: 10px; max-width: 480px; }
.search-bar input {
  flex: 1;
  padding: 12px 14px;
  font-size: 15px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.search-bar input:focus { outline: none; border-color: var(--accent); }

/* ---------- Product table (ledger) ---------- */
table.ledger {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

table.ledger thead th {
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0 12px 10px;
  border-bottom: 2px solid var(--ink);
}

table.ledger tbody td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

table.ledger tbody tr:nth-child(even) { background: rgba(43,51,39,0.028); }
table.ledger tbody tr:hover { background: rgba(182,129,45,0.08); }

.thumb {
  width: 46px;
  height: 46px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  object-fit: cover;
  background: #fff;
  display: block;
}

.thumb.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  font-size: 16px;
  font-family: "Fraunces", serif;
}

.prod-name { font-weight: 600; }
.prod-id { display: block; font-family: "IBM Plex Mono", monospace; font-size: 11px; color: var(--ink-soft); }

.price-stamp {
  display: inline-block;
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  font-size: 13.5px;
  border: 1.5px solid var(--accent-deep);
  color: var(--accent-deep);
  border-radius: 4px;
  padding: 3px 9px;
  transform: rotate(-1deg);
  white-space: nowrap;
}

.date-col { color: var(--ink-soft); font-size: 13px; font-family: "IBM Plex Mono", monospace; }

/* ---------- Empty state ---------- */
.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--ink-soft);
}
.empty-state .stamp-no {
  display: inline-block;
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: 15px;
  color: var(--danger);
  border: 2px solid var(--danger);
  border-radius: 6px;
  padding: 10px 22px;
  transform: rotate(-3deg);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

footer.site-footer {
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 560px) {
  .hero h1 { font-size: 30px; }
  nav.tabs { flex-wrap: wrap; }
  .panel { padding: 22px 20px; }
  table.ledger { font-size: 13px; }
  .thumb { width: 36px; height: 36px; }
}