/*
 * app.css — Editorial design system for Claude Code Analytics chrome
 *
 * Token values are kept in VALUE-PARITY with html_writer.py _CSS block.
 * When changing --ink-faint or accent tokens, update BOTH files.
 * Search for "SYNC: app.css ↔ html_writer._CSS" to find paired rules.
 */

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

/* ─── Design tokens ─── */
:root {
  /* Palette — terracotta-orange identity, warm editorial light theme */
  /* SYNC: app.css ↔ html_writer._CSS — keep token values identical */
  --sand: #f4f3f0;
  --surface: #fefefe;
  --surface-2: #f9f8f5;
  --warm-dark: #1a1c22;
  --ink: #3d4152;
  --ink-soft: #6b7185;
  --ink-faint: #7d8296;        /* SYNC: darkened from #9aa0b5 for WCAG AA */
  --accent: #c9502a;           /* Terracotta — primary brand color */
  --accent-soft: #fdf2ee;
  --accent-mid: rgba(201, 80, 42, 0.12);
  --accent-light: #e8d5c4;
  --border: #e2dfd8;
  --border-faint: #ede9e2;
  --success: #166534;

  /* Typography — editorial serif display + humanist sans data */
  --font-display: 'Palatino Linotype', 'Palatino', 'Book Antiqua', 'Georgia', serif;
  --font-data: 'Optima', 'Candara', 'Gill Sans MT', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'SF Mono', 'Menlo', 'Consolas', monospace;

  /* Geometry */
  --radius: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --shadow-sm: 0 2px 8px rgba(26,28,34,0.06), 0 1px 2px rgba(26,28,34,0.04);
  --shadow-md: 0 4px 20px rgba(26,28,34,0.09), 0 2px 6px rgba(26,28,34,0.05);
  --transition: 0.20s ease;
}

/* ─── Base ─── */
html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-data);
  background: var(--sand);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* ─── Site-wide focus ring ─── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ─── Confidential banner ─── */
.top-banner {
  background: rgba(201, 80, 42, 0.92);
  color: rgba(255, 255, 255, 0.95);
  text-align: center;
  padding: 8px 24px;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(201, 80, 42, 0.4);
}

/* ─── Editorial header / chrome nav ─── */
header {
  background: var(--warm-dark);
  color: rgba(255, 255, 255, 0.92);
  padding: 0;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 56px;
}

.header-brand {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.header-eyebrow {
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 2px;
}

.header-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1.2;
}

header nav {
  display: flex;
  align-items: center;
  gap: 0;
}

header nav a {
  color: var(--accent-light);
  text-decoration: none;
  font-size: 0.83rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-xl);
  transition: color var(--transition), background var(--transition);
  font-family: var(--font-data);
}

header nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
}

.logout-form {
  display: inline-flex;
  align-items: center;
  margin-left: 0.5rem;
}

.logout-form button {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--accent-light);
  font-size: 0.8rem;
  padding: 0.28rem 0.75rem;
  border-radius: var(--radius-xl);
  cursor: pointer;
  font-family: var(--font-data);
  transition: background var(--transition), color var(--transition);
}

.logout-form button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* ─── Main content ─── */
main {
  flex: 1;
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* ─── Typography ─── */
h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  margin-bottom: 1.25rem;
  color: var(--warm-dark);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
  margin: 0 0 0.75rem;
  color: var(--warm-dark);
}

p { line-height: 1.65; margin-bottom: 0.75rem; }

a { color: var(--accent); }
a:hover { text-decoration: underline; }

/* ─── Eyebrow label ─── */
.eyebrow {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::after {
  content: '';
  display: inline-block;
  height: 1px;
  width: 32px;
  background: var(--accent);
  opacity: 0.5;
}

/* ─── Layout utilities ─── */
.stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

/* ─── Card ─── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 1.2rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-data);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
  letter-spacing: 0.02em;
}

.btn:hover { background: #b04423; color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-secondary {
  background: var(--surface);
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-secondary:hover { background: var(--accent-soft); color: var(--accent); }

/* ─── Text utilities ─── */
.muted {
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

/* ─── Form fields ─── */
.field {
  margin-bottom: 1.1rem;
}

.field-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.3rem;
  font-family: var(--font-data);
}

.field-hint {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 0.3rem;
  line-height: 1.5;
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="file"] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: var(--font-data);
  background: var(--surface);
  color: var(--ink);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-mid);
}

input[type="file"] {
  cursor: pointer;
  padding: 0.4rem 0.6rem;
}

/* ─── Data table ─── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  font-family: var(--font-data);
}

.data-table thead th {
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 2px solid var(--border);
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.data-table thead th.th-right { text-align: right; }

.data-table tbody td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border-faint);
  color: var(--ink);
  vertical-align: middle;
}

.data-table tbody tr:last-child td { border-bottom: none; }

.data-table tbody tr:hover td { background: var(--accent-soft); }

.data-table td.td-right,
.data-table th.td-right { text-align: right; }

.data-table td.td-mono {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

/* ─── Chart card ─── */
.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.chart-card svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Delta badge (mini-sparkline) */
.delta {
  display: inline-flex;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--font-data);
  padding: 2px 8px;
  border-radius: var(--radius-xl);
  margin-left: 0.5rem;
}

.delta-pos { background: rgba(22, 101, 52, 0.1); color: #166534; }
.delta-neg { background: rgba(192, 57, 43, 0.1); color: #c0392b; }
.delta-zero { background: var(--surface-2); color: var(--ink-soft); }

/* ─── Alerts ─── */
.alert {
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

.alert-error {
  background: #fdf0ef;
  border: 1px solid #e0b3af;
  color: #7d2a24;
}

/* ─── Drop zone (upload) ─── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 1rem 0.75rem;
  transition: border-color var(--transition), background var(--transition);
  cursor: pointer;
  position: relative;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
  padding: 0;
  border: none;
}

.drop-zone-label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  pointer-events: none;
}

.filename-hint {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 600;
  margin-top: 4px;
  word-break: break-all;
}

.pattern-hint {
  font-size: 0.75rem;
  color: var(--ink-faint);
}

/* ─── Spinner ─── */
#upload-spinner {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-left: 0.75rem;
}

#upload-spinner.visible { display: inline-flex; }

/* ─── Footer ─── */
footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.76rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--border);
}

/* ─── Login page ─── */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--sand);
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-md);
}

.login-eyebrow {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
  text-align: center;
}

.login-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  text-align: center;
  color: var(--warm-dark);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.login-subtitle {
  text-align: center;
  font-size: 0.8rem;
  color: var(--ink-faint);
  margin-bottom: 1.75rem;
}

.login-box .btn {
  width: 100%;
  justify-content: center;
  margin-top: 1rem;
}

.login-box input[type="password"] {
  width: 100%;
}

/* ─── Responsive ─── */
@media (max-width: 700px) {
  .grid-2 { grid-template-columns: 1fr; }
  main { margin: 1.25rem auto; }
  .header-inner { height: auto; padding: 0.75rem 1rem; flex-wrap: wrap; }
}