/* ============================================================================
   "The Ledger" — an engineered accounting-paper aesthetic for a credits/CSV
   tools platform. Warm paper, ink text, an oxblood rubber-stamp accent reserved
   for prices and primary actions, hairline rules, monospace tabular numerals.
   CSS-only (no build step); server-rendered Jinja + HTMX friendly.
   ============================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,600;9..144,900&family=Spline+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --paper:      #f4f1e8;
  --paper-deep: #ece7d8;
  --surface:    #fbfaf5;
  --ink:        #1b1a16;
  --ink-soft:   #4d4a40;
  --muted:      #6a6557;   /* AA on paper (5.15) and surface (5.56) */
  --rule:       #d6cfbd;
  --rule-bold:  #1b1a16;
  --stamp:      #a02a18;   /* oxblood — prices, primary CTAs, the "stamp" */
  --stamp-deep: #7d2012;
  --ok:         #2c6048;
  --warn:       #9a6512;

  --display: 'Fraunces', Georgia, serif;
  --body:    'Spline Sans', system-ui, sans-serif;
  --mono:    'JetBrains Mono', ui-monospace, monospace;

  --maxw: 64rem;
  --radius: 3px;            /* sharp, document-like */
  --shadow: 0 1px 0 var(--rule), 0 10px 30px -18px rgba(27, 26, 22, 0.5);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--body);
  color: var(--ink);
  background-color: var(--paper);
  /* faint ledger ruling + paper grain */
  background-image:
    repeating-linear-gradient(to bottom, transparent 0, transparent 31px, rgba(27,26,22,0.035) 31px, rgba(27,26,22,0.035) 32px),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  line-height: 1.55;
  font-size: 1.05rem;
}

/* ---- skip link / a11y ---------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

:focus-visible {
  outline: 2.5px solid var(--stamp);
  outline-offset: 2px;
}

/* ---- header / footer ----------------------------------------------------- */
.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.4rem 1.5rem;
  border-bottom: 1.5px solid var(--rule-bold);
}
.brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}
.brand::before { content: "▦ "; color: var(--stamp); }
.site-header nav { display: flex; align-items: baseline; gap: 1.25rem; }
.site-header nav a,
.link-button {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
}
.site-header nav a:hover, .link-button:hover { color: var(--stamp); }
.inline { display: inline; margin: 0; }
.link-button { background: none; border: 0; cursor: pointer; padding: 0; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  animation: rise 0.5s ease both;
}
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.site-footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
}
.site-footer a { color: var(--ink-soft); }

/* ---- typography ---------------------------------------------------------- */
h1 {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}
h2 { font-family: var(--display); font-weight: 600; font-size: 1.6rem; letter-spacing: -0.01em; }
h3 { font-family: var(--display); font-weight: 600; font-size: 1.25rem; margin: 0; }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 46ch; }

a { color: var(--stamp); text-underline-offset: 2px; }

/* ---- hero ---------------------------------------------------------------- */
.hero { padding: 2rem 0 3rem; border-bottom: 1px solid var(--rule); margin-bottom: 2.5rem; }
.hero h1 { max-width: 16ch; }

/* ---- tool grid (ledger rows) -------------------------------------------- */
.tool-grid {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.tool-card { background: var(--surface); }
.tool-card a {
  display: block;
  padding: 1.5rem 1.4rem;
  text-decoration: none;
  color: var(--ink);
  height: 100%;
  transition: background 0.15s ease;
}
.tool-card a:hover { background: #fff; }
.tool-card h3 { margin-bottom: 0.5rem; }
.cost {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--stamp);
  font-variant-numeric: tabular-nums;
  margin: 0;
}

/* ---- breadcrumb ---------------------------------------------------------- */
.breadcrumb {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--ink-soft); text-decoration: none; }

/* ---- balance / numerics -------------------------------------------------- */
.balance { font-family: var(--mono); font-size: 0.95rem; font-variant-numeric: tabular-nums; }
.balance strong { color: var(--stamp); }

/* ---- forms --------------------------------------------------------------- */
.upload-form, .confirm-form, .form-stack { margin: 2rem 0; display: flex; flex-direction: column; gap: 0.9rem; max-width: 30rem; }
label {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
input[type="file"], input[type="email"] {
  font-family: var(--body);
  font-size: 1rem;
  padding: 0.75rem;
  background: var(--surface);
  border: 1.5px solid var(--rule-bold);
  border-radius: var(--radius);
  width: 100%;
}
input[type="file"]::file-selector-button {
  font-family: var(--mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 1rem;
  padding: 0.5rem 0.9rem;
  border: 1.5px solid var(--ink);
  background: var(--paper);
  border-radius: var(--radius);
  cursor: pointer;
}

/* ---- buttons (the rubber stamp) ------------------------------------------ */
button[type="submit"], .button {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--stamp);
  border: none;
  border-radius: var(--radius);
  padding: 0.85rem 1.4rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 2px 0 var(--stamp-deep);
  transition: transform 0.08s ease, box-shadow 0.08s ease, background 0.15s ease;
  align-self: flex-start;
}
button[type="submit"]:hover, .button:hover { background: var(--stamp-deep); }
button[type="submit"]:active, .button:active { transform: translateY(2px); box-shadow: 0 0 0 var(--stamp-deep); }
.secondary, a.secondary {
  font-family: var(--mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  text-decoration: none;
  align-self: center;
  margin-left: 1rem;
}

/* ---- quote card (the stamped receipt) ------------------------------------ */
.quote-card {
  position: relative;
  background: var(--surface);
  border: 1.5px solid var(--rule-bold);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 32rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}
.quote-card::after {
  /* a faint rotated "PRICED" stamp in the corner */
  content: "PRICED";
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--stamp);
  border: 2px solid var(--stamp);
  padding: 0.2rem 0.4rem;
  border-radius: 2px;
  transform: rotate(8deg);
  opacity: 0.35;
}
.file-name { font-family: var(--mono); font-size: 0.85rem; color: var(--muted); margin: 0 0 1rem; word-break: break-all; }
.quote-line { font-size: 1.3rem; font-family: var(--display); }
.quote-line strong { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--stamp); font-size: 1.5rem; }
.quote-detail { font-family: var(--mono); font-size: 0.85rem; color: var(--muted); }
.fineprint { font-size: 0.85rem; color: var(--muted); max-width: 36ch; }

/* ---- oauth ----------------------------------------------------------------- */
.oauth-google {
  background: var(--surface);
  color: var(--ink);
  border: 1.5px solid var(--rule-bold);
  box-shadow: none;
  width: 100%;
  max-width: 30rem;
  text-align: center;
}
.oauth-google:hover { background: var(--paper-deep); }
.oauth-google:active { transform: none; box-shadow: none; }
.divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.25rem 0;
  max-width: 30rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.divider::before, .divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* ---- alerts -------------------------------------------------------------- */
.alert { padding: 0.9rem 1.1rem; border-radius: var(--radius); border-left: 4px solid; font-size: 0.95rem; margin: 1rem 0; }
.alert-error { background: #f7e9e6; border-color: var(--stamp); color: var(--stamp-deep); }
.alert-warn { background: #f6efe0; border-color: var(--warn); color: #6b4a0f; }
.alert-ok { background: #e8f0ec; border-color: var(--ok); color: var(--ok); }

/* ---- credit packs --------------------------------------------------------- */
.pack-grid {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  max-width: var(--maxw);
}
.pack-card {
  background: var(--surface);
  padding: 1.5rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.pack-card form { margin: 0; }
.pack-card button[type="submit"] { width: 100%; text-align: center; }

/* ---- job status ---------------------------------------------------------- */
.status { font-family: var(--mono); font-size: 1rem; display: flex; align-items: center; gap: 0.6rem; margin: 1.5rem 0; }
.status-done { color: var(--ok); }
.status-failed { color: var(--stamp); flex-direction: column; align-items: flex-start; }
.error-detail { font-size: 0.8rem; color: var(--muted); }
.spinner {
  width: 0.9rem; height: 0.9rem;
  border: 2.5px solid var(--rule);
  border-top-color: var(--stamp);
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- responsive + motion preferences ------------------------------------- */
@media (max-width: 40rem) {
  .site-header { flex-direction: column; gap: 0.5rem; align-items: flex-start; }
  .container { padding-top: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #16150f; --paper-deep: #100f0a; --surface: #1f1d16;
    --ink: #ece7d6; --ink-soft: #b8b2a0; --muted: #8a8474;
    --rule: #36332a; --rule-bold: #cfc8b5; --stamp: #e06245; --stamp-deep: #c24a30;
  }
}