/* Factornix shared design system.
 *
 * Served by BOTH the public site and the portal (each mounts this same
 * directory at /shared -- see site/app.py and portal/app.py), so the tokens,
 * header, footer, buttons, forms, cards and badges are defined exactly once
 * rather than copy-pasted per app. App-specific rules live in that app's own
 * stylesheet (/static/site.css, /static/portal.css) and may only ADD to what
 * is defined here.
 *
 * No 'unsafe-inline' is allowed by either app's CSP, so everything visual
 * belongs in this file or an app stylesheet -- never a style attribute.
 */

/* ---------------------------------------------------------------- tokens */

:root {
  color-scheme: light;

  /* Neutrals: a slightly cool slate ramp, so surfaces layer visibly without
     resorting to heavy borders everywhere. */
  --bg: #ffffff;
  --surface: #f8fafc;
  --surface-raised: #ffffff;
  --surface-sunken: #f1f5f9;
  --fg: #0f172a;
  --fg-soft: #334155;
  --muted: #56637a;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  /* Brand + semantics. Every foreground/background pair below clears WCAG AA
     for body text at its intended size. */
  --accent: #1d4ed8;
  --accent-hover: #1a44bd;
  --accent-soft: #eef2ff;
  --accent-ring: rgba(29, 78, 216, 0.35);

  --success-fg: #15803d;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;

  --warn-fg: #92620e;
  --warn-bg: #fffbeb;
  --warn-border: #fde68a;

  --danger-fg: #b3261e;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;

  --info-fg: #4f46e5;
  --info-bg: #f5f3ff;
  --info-border: #ddd6fe;

  /* Spacing scale (4px base). */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 4px 12px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 4px 6px rgba(15, 23, 42, 0.04), 0 12px 32px rgba(15, 23, 42, 0.08);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --content-width: 1080px;
  --prose-width: 760px;
  --transition: 140ms ease;
}

/* ------------------------------------------------------------------ reset */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

h1,
h2,
h3,
h4 {
  color: var(--fg);
  line-height: 1.25;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-3);
  text-wrap: balance;
}

h1 {
  font-size: clamp(1.75rem, 1.4rem + 1.6vw, 2.5rem);
  font-weight: 700;
}
h2 {
  font-size: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  font-weight: 650;
}
h3 {
  font-size: 1.0625rem;
  font-weight: 650;
}

p {
  margin: 0 0 var(--space-4);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition);
}
a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
}

/* One consistent, always-visible-on-keyboard focus ring everywhere. */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ----------------------------------------------------------------- layout */

main {
  flex: 1 0 auto;
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-10) var(--space-6) var(--space-16);
}

/* Long-form reading pages (Privacy, Terms) want a narrower measure. */
main.prose-width {
  max-width: var(--prose-width);
}

.stack > * + * {
  margin-top: var(--space-6);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: var(--space-2);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--fg);
  color: #fff;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.skip-link:focus {
  left: var(--space-4);
}

/* ----------------------------------------------------------------- header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--fg);
  flex-shrink: 0;
}

.brand-logo {
  display: block;
  height: 32px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.site-nav a {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--fg-soft);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}
.site-nav a:hover {
  background: var(--surface-sunken);
  color: var(--fg);
}
.site-nav a[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-soft);
}

/* ----------------------------------------------------------------- footer */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.875rem;
  padding: var(--space-12) var(--space-6) var(--space-8);
}

.site-footer-inner {
  max-width: var(--content-width);
  margin: 0 auto;
}

.site-footer p {
  margin: 0 0 var(--space-2);
}

.footer-columns {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(200px, 1fr);
  gap: var(--space-12);
  align-items: start;
}

.footer-brand {
  display: inline-flex;
  margin-bottom: var(--space-4);
}
.footer-brand img {
  height: 26px;
  width: auto;
  opacity: 0.9;
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-soft);
  margin: 0 0 var(--space-3);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-start;
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.footer-copyright {
  margin: var(--space-8) 0 0;
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
}

/* ---------------------------------------------------------------- surfaces */

.panel,
.card {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.panel {
  margin: 0 0 var(--space-6);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}
.panel-header h2,
.panel-header h3 {
  margin: 0;
}
.panel-subtitle {
  color: var(--muted);
  font-size: 0.875rem;
  margin: var(--space-1) 0 0;
}

.card-interactive {
  transition: box-shadow var(--transition), border-color var(--transition),
    transform var(--transition);
}
.card-interactive:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

/* Empty states: the same treatment everywhere something has no rows yet. */
.empty-state {
  padding: var(--space-8) var(--space-6);
  text-align: center;
  color: var(--muted);
  background: var(--surface-sunken);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}
.empty-state p {
  margin: 0 0 var(--space-4);
}
.empty-state p:last-child {
  margin-bottom: 0;
}
.empty-state-title {
  display: block;
  color: var(--fg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

/* ----------------------------------------------------------------- buttons */

.button,
button.button,
.signup-row button,
form button[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition),
    transform var(--transition);
}

.button:hover,
button.button:hover,
.signup-row button:hover,
form button[type="submit"]:hover {
  background: var(--accent-hover);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.button:active,
form button[type="submit"]:active {
  transform: translateY(1px);
}

.button:disabled,
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.button-block {
  width: 100%;
}

.button-secondary,
button.secondary {
  background: var(--surface-raised);
  color: var(--fg);
  border-color: var(--border-strong);
}
.button-secondary:hover,
button.secondary:hover {
  background: var(--surface-sunken);
  color: var(--fg);
}

.button-danger {
  background: var(--surface-raised);
  color: var(--danger-fg);
  border-color: var(--danger-border);
}
.button-danger:hover {
  background: var(--danger-bg);
  color: var(--danger-fg);
}

.button-sm {
  padding: 6px 12px;
  font-size: 0.875rem;
}

.link-button {
  background: none;
  border: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--fg-soft);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.link-button:hover {
  background: var(--surface-sunken);
  color: var(--fg);
  box-shadow: none;
}

.inline-form {
  display: inline-flex;
  margin: 0;
}

/* ------------------------------------------------------------------- forms */

.field {
  margin-bottom: var(--space-4);
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--fg-soft);
  margin-bottom: var(--space-2);
}

input[type="email"],
input[type="password"],
input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--fg);
  font: inherit;
  font-size: 0.9375rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input[type="email"]:focus,
input[type="password"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

input::placeholder {
  color: var(--muted);
  opacity: 0.8;
}

.field-hint,
.form-hint {
  color: var(--muted);
  font-size: 0.8125rem;
  margin: var(--space-2) 0 0;
}

/* Inline feedback: errors, warnings, successes, all the same shape. */
.alert {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin: 0 0 var(--space-4);
}
.alert-error,
.form-error {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-fg);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
}
.alert-success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success-fg);
}
.alert-warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: var(--warn-fg);
}
.alert-info {
  background: var(--info-bg);
  border-color: var(--info-border);
  color: var(--info-fg);
}

.form-status {
  margin: var(--space-3) 0 0;
  color: var(--fg-soft);
  font-size: 0.875rem;
}

/* Honeypot: visually hidden from sighted users, off-screen rather than
   display:none/visibility:hidden so unsophisticated bots that skip those
   properties still fill it in. */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ------------------------------------------------------------------ badges */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  color: var(--fg-soft);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.5;
  white-space: nowrap;
}

.badge-live,
.badge-success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success-fg);
}
.badge-soon,
.badge-info {
  background: var(--info-bg);
  border-color: var(--info-border);
  color: var(--info-fg);
}
.badge-warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: var(--warn-fg);
}
.badge-danger {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-fg);
}

/* A small coloured dot before a status badge's label. */
.badge-dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* ------------------------------------------------------------------ tables */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

table.data-table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9375rem;
}
table.data-table th,
table.data-table td {
  text-align: left;
  padding: 10px var(--space-4);
  border-bottom: 1px solid var(--border);
}
table.data-table thead th {
  background: var(--surface-sunken);
  color: var(--fg-soft);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
table.data-table tbody tr:last-child td {
  border-bottom: none;
}
table.data-table tbody tr:hover {
  background: var(--surface);
}
table.data-table td.numeric,
table.data-table th.numeric {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------- utilities */

.muted {
  color: var(--muted);
}
.disclosure {
  color: var(--muted);
  font-size: 0.8125rem;
}
.data-note {
  color: var(--muted);
  font-style: italic;
}
.text-sm {
  font-size: 0.875rem;
}
.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}
.row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.row-between {
  justify-content: space-between;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------------------------------------- responsive */

@media (max-width: 720px) {
  .footer-columns {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 600px) {
  main {
    padding: var(--space-6) var(--space-4) var(--space-12);
  }
  .site-header {
    padding: var(--space-3) var(--space-4);
  }
  .site-footer {
    padding: var(--space-8) var(--space-4) var(--space-6);
  }
  .panel,
  .card {
    padding: var(--space-5);
  }
  .site-nav {
    gap: 0;
  }
  .site-nav a,
  .link-button {
    padding: var(--space-2);
    font-size: 0.875rem;
  }
}