/* =============================================================
 * Petra Keycloak login theme — minimal CSS.
 *
 * We own the HTML (template.ftl + login.ftl override the upstream
 * keycloak.v2 versions). No PatternFly classes, no dark-mode JS,
 * no input-group flex grids to fight. This stylesheet only has to
 * style our own elements (.petra-*).
 *
 * Fonts are self-hosted; the bundle lives under ../fonts/ and is
 * declared in ../fonts/fonts.css (auto-generated by _fetch.py).
 * ========================================================== */

@import url("../fonts/fonts.css");

:root {
  --petra-paper: oklch(0.985 0.005 80);
  --petra-paper-raised: oklch(0.97 0.006 80);
  --petra-paper-sunken: oklch(0.955 0.006 80);
  --petra-ink: oklch(0.18 0.01 60);
  --petra-ink-muted: oklch(0.45 0.01 60);
  --petra-ink-subtle: oklch(0.62 0.005 80);
  --petra-rule: oklch(0.88 0.004 80);
  --petra-rule-strong: oklch(0.78 0.006 80);
  --petra-accent: oklch(0.36 0.13 25);
  --petra-accent-hover: oklch(0.3 0.13 25);
  --petra-accent-fg: oklch(0.985 0.005 80);
  --petra-error: oklch(0.45 0.18 28);

  --petra-font-serif: "Source Serif 4", ui-serif, "Iowan Old Style",
    "Apple Garamond", Baskerville, "Times New Roman", serif;
  --petra-font-sans: "Inter Tight", ui-sans-serif, system-ui,
    -apple-system, "Segoe UI", Roboto, sans-serif;

  color-scheme: light;
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--petra-paper);
  color: var(--petra-ink);
  font-family: var(--petra-font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

.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;
}

/* ---------- Shell + masthead ---------- */
.petra-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem 3rem;
  gap: 1.75rem;
}

.petra-masthead {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
}

.petra-wordmark {
  font-family: var(--petra-font-serif);
  font-size: 2.5rem;
  font-weight: 500;
  letter-spacing: -0.012em;
  line-height: 1;
  color: var(--petra-ink);
}

.petra-eyebrow {
  font-size: 0.6875rem;
  font-variant: all-small-caps;
  text-transform: lowercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  color: var(--petra-ink-muted);
}

/* ---------- Card ---------- */
.petra-card {
  width: 100%;
  max-width: 24rem;
  background: var(--petra-paper-raised);
  border: 1px solid var(--petra-rule-strong);
  border-radius: 2px;
  box-shadow: 0 1px 0 0 oklch(0.85 0.005 80 / 0.6);
  padding: 1.75rem 1.75rem 2rem;
}

.petra-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--petra-rule);
}

.petra-card-title {
  margin: 0;
  font-family: var(--petra-font-serif);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.012em;
  color: var(--petra-ink);
}

.petra-card-body {
  display: flex;
  flex-direction: column;
  gap: 1.125rem;
}

.petra-card-info {
  margin-top: 1.25rem;
  padding-top: 0.875rem;
  border-top: 1px solid var(--petra-rule);
  font-size: 0.8125rem;
  color: var(--petra-ink-muted);
}

/* ---------- Locale switcher ---------- */
.petra-locale {
  margin: 0;
}

.petra-locale select {
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
  font-size: 0.75rem;
  font-variant: all-small-caps;
  text-transform: lowercase;
  letter-spacing: 0.04em;
  color: var(--petra-ink-muted);
  background: var(--petra-paper);
  border: 1px solid var(--petra-rule);
  border-radius: 2px;
  padding: 0.25rem 1.5rem 0.25rem 0.5rem;
  cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--petra-ink-muted) 50%),
                    linear-gradient(135deg, var(--petra-ink-muted) 50%, transparent 50%);
  background-position: calc(100% - 0.75rem) 50%, calc(100% - 0.5rem) 50%;
  background-size: 4px 4px, 4px 4px;
  background-repeat: no-repeat;
}

.petra-locale select:hover {
  color: var(--petra-ink);
  border-color: var(--petra-ink);
}

.petra-locale select:focus {
  outline: none;
  border-color: var(--petra-accent);
  box-shadow: 0 0 0 1px var(--petra-accent);
}

/* ---------- Banner ---------- */
/*
 * Banners are messages from Keycloak (e.g. "Please re-authenticate").
 * Read as marginalia, not as a form field — left-anchored, italic,
 * coloured rule on the inline-start edge. Important not to make this
 * look like an input or the user thinks it's where they type.
 */
.petra-banner {
  border-left: 2px solid var(--petra-rule-strong);
  padding: 0.125rem 0 0.125rem 0.75rem;
  font-size: 0.8125rem;
  font-style: italic;
  color: var(--petra-ink-muted);
  background: transparent;
  margin: -0.25rem 0 0.25rem;
}

.petra-banner--error {
  border-left-color: var(--petra-error);
  color: var(--petra-error);
  font-style: normal;
}

.petra-banner--warning {
  border-left-color: oklch(0.55 0.13 65);
  color: oklch(0.45 0.13 65);
  font-style: normal;
}

.petra-banner--info,
.petra-banner--success {
  color: var(--petra-ink-muted);
}

/* ---------- Form ---------- */
.petra-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.petra-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.petra-label {
  font-size: 0.75rem;
  font-variant: all-small-caps;
  text-transform: lowercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  color: var(--petra-ink-muted);
}

.petra-field input[type="text"],
.petra-field input[type="email"],
.petra-field input[type="password"] {
  width: 100%;
  height: 2.5rem;
  padding: 0 0.75rem;
  font: inherit;
  font-size: 0.9375rem;
  color: var(--petra-ink);
  background: var(--petra-paper);
  border: 1px solid var(--petra-rule-strong);
  border-radius: 2px;
  transition: border-color 100ms, box-shadow 100ms;
}

.petra-field input:hover {
  border-color: var(--petra-ink);
}

.petra-field input:focus {
  outline: none;
  border-color: var(--petra-accent);
  box-shadow: 0 0 0 1px var(--petra-accent);
}

.petra-field input[aria-invalid="true"] {
  border-color: var(--petra-error);
}

.petra-field-error {
  margin: 0;
  font-size: 0.75rem;
  color: var(--petra-error);
}

.petra-field-aside {
  align-self: flex-end;
  margin-top: 0.125rem;
  font-size: 0.75rem;
  color: var(--petra-ink-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 100ms, border-color 100ms;
}

.petra-field-aside:hover {
  color: var(--petra-accent);
  border-bottom-color: var(--petra-accent);
}

/* ---------- Password show/hide ---------- */
.petra-password {
  position: relative;
}

.petra-password input {
  padding-right: 2.75rem;
}

.petra-password-toggle {
  position: absolute;
  top: 50%;
  right: 0.375rem;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: transparent;
  border: 0;
  color: var(--petra-ink-subtle);
  cursor: pointer;
  border-radius: 2px;
}

.petra-password-toggle:hover {
  color: var(--petra-ink);
}

.petra-password-toggle.is-shown {
  color: var(--petra-accent);
}

.petra-password-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 1px var(--petra-accent);
}

/* ---------- Submit ---------- */
.petra-submit {
  margin-top: 0.5rem;
  width: 100%;
  height: 2.5rem;
  padding: 0 1rem;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--petra-accent-fg);
  background: var(--petra-accent);
  border: 0;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 100ms;
}

.petra-submit:hover {
  background: var(--petra-accent-hover);
}

.petra-submit:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--petra-paper-raised), 0 0 0 4px var(--petra-accent);
}

.petra-submit[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ---------- Colophon ---------- */
.petra-colophon {
  font-size: 0.6875rem;
  font-variant: all-small-caps;
  text-transform: lowercase;
  letter-spacing: 0.08em;
  color: var(--petra-ink-subtle);
}