/* -----------------------------------------------------------------------------
   Block page — restricted palette: grayscale + red alert only.
   Deliberately omits the teal / mint / gold / olive brand accents so the
   "stopped you for a reason" message reads unambiguously.
   PTCC brand palette (the full set) lives in:
     Infrastructure Knowledge Base/architecture/web-presence.md §Brand assets
   ---------------------------------------------------------------------------*/

:root {
  color-scheme: light dark;

  /* Light mode (defaults) */
  --color-bg:             #f2f3f3;
  --color-surface:        #ffffff;
  --color-ink:            #1a1a1a;
  --color-muted:          #5c6466;
  --color-line:           #d8dcdc;
  --color-line-strong:    #b9bdbd;
  --color-alert:          #b91c1c;

  --color-btn-bg:         #1a1a1a;
  --color-btn-fg:         #ffffff;
  --color-btn-bg-hover:   #000000;
  --color-btn-ghost-fg:   #1a1a1a;

  --color-callout-bg:     #f2f3f3;
  --color-callout-accent: #b91c1c;

  --color-success-bg:     #f7f7f8;
  --color-success-border: #d8dcdc;

  --color-input-bg:       #ffffff;
  --color-input-focus-ring: rgba(26, 26, 26, 0.18);

  /* Background grid — solid color, hard color stops so there's no gradient
     interpolation that could band. Single color, 1px lines, 40px spacing. */
  --color-grid: #e2e5e5;

  --radius: 12px;

  --font-body:    "Lato", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-heading: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
}

/* Dark mode — system preference */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg:             #0d0e0f;
    --color-surface:        #18191b;
    --color-ink:            #e8e8e8;
    --color-muted:          #a0a4a7;
    --color-line:           #2a2d2f;
    --color-line-strong:    #3a3e40;
    --color-alert:          #f04b46;

    --color-btn-bg:         #f0f0f0;
    --color-btn-fg:         #18191b;
    --color-btn-bg-hover:   #ffffff;
    --color-btn-ghost-fg:   #e8e8e8;

    --color-callout-bg:     #1f2123;
    --color-callout-accent: #f04b46;

    --color-success-bg:     #1f2123;
    --color-success-border: #2a2d2f;

    --color-input-bg:       #14151700;
    --color-input-focus-ring: rgba(232, 232, 232, 0.22);

    --color-grid: #16181b;
  }
}

/* Dark mode — explicit override (for testing or future toggle) */
:root[data-theme="dark"] {
  --color-bg:             #0d0e0f;
  --color-surface:        #18191b;
  --color-ink:            #e8e8e8;
  --color-muted:          #a0a4a7;
  --color-line:           #2a2d2f;
  --color-line-strong:    #3a3e40;
  --color-alert:          #f04b46;

  --color-btn-bg:         #f0f0f0;
  --color-btn-fg:         #18191b;
  --color-btn-bg-hover:   #ffffff;
  --color-btn-ghost-fg:   #e8e8e8;

  --color-callout-bg:     #1f2123;
  --color-callout-accent: #f04b46;

  --color-success-bg:     #1f2123;
  --color-success-border: #2a2d2f;

  --color-input-bg:       #141517;
  --color-input-focus-ring: rgba(232, 232, 232, 0.22);

  --color-grid: #16181b;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background-color: var(--color-bg);
  /* Grid pattern: two crossed sets of 1px lines. Same color stop position
     (1px → 1px) gives a hard edge with zero gradient interpolation. */
  background-image:
    linear-gradient(to right,  var(--color-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  background-attachment: fixed;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  background: var(--color-surface);
  border: 3px solid var(--color-alert);
  border-radius: var(--radius);
  width: 100%;
  max-width: 560px;
  padding: 36px 40px 32px;
}

@media (max-width: 480px) {
  .card { padding: 28px 22px 22px; }
}

/* Header */

.card__header {
  text-align: center;
  margin-bottom: 28px;
}

.logo {
  display: block;
  margin: 0 auto 12px;
  width: 72px;
  height: 72px;
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

h1 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 32px;
  line-height: 1.15;
  color: var(--color-ink);
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* Blocked-domain callout */

.domain-block {
  background: var(--color-callout-bg);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-callout-accent);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 0 0 24px;
}

.domain-block__label {
  margin: 0 0 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.domain-block__value {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 16px;
  color: var(--color-ink);
  word-break: break-all;
}

.domain-block__value.is-empty {
  font-style: italic;
  color: var(--color-muted);
}

.domain-block__noscript {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--color-muted);
}

/* Body copy */

.body-copy p { margin: 0 0 12px; }

/* Global utility — muted secondary text */
.muted {
  color: var(--color-muted);
  font-size: 14px;
}

/* CTA + buttons */

.cta-row {
  margin: 20px 0 0;
  text-align: center;
}

.btn {
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 11px 22px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.btn:focus-visible {
  outline: 3px solid var(--color-ink);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-btn-bg);
  color: var(--color-btn-fg);
}
.btn--primary:hover { background: var(--color-btn-bg-hover); }
.btn--primary:disabled {
  background: var(--color-line);
  color: var(--color-muted);
  cursor: not-allowed;
}

.btn--ghost {
  background: transparent;
  color: var(--color-btn-ghost-fg);
  border-color: var(--color-line-strong);
}
.btn--ghost:hover { border-color: var(--color-ink); }

/* Form */

.form-wrap {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

.field { margin-bottom: 16px; }

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.field input,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: 15px;
  padding: 10px 12px;
  border: 1px solid var(--color-line-strong);
  border-radius: 6px;
  background: var(--color-input-bg);
  color: var(--color-ink);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

.field textarea {
  min-height: 96px;
  resize: vertical;
  font-family: inherit;
  line-height: 1.45;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-ink);
  box-shadow: 0 0 0 3px var(--color-input-focus-ring);
}

.field input:invalid:not(:placeholder-shown):not(:focus),
.field textarea:invalid:not(:placeholder-shown):not(:focus) {
  border-color: var(--color-alert);
}

.field__hint {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--color-muted);
}

.field--honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-top: 8px;
}

.form-status {
  margin: 12px 0 0;
  font-size: 13px;
  min-height: 1.2em;
}
.form-status.is-error { color: var(--color-alert); }
.form-status.is-info  { color: var(--color-muted); }

/* Success state */

.success-state {
  margin-top: 24px;
  padding: 20px 22px;
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  border-radius: 8px;
}
.success-state h2 {
  margin: 0 0 8px;
  font-size: 20px;
  color: var(--color-ink);
}
.success-state p { margin: 0 0 10px; }
.success-state p:last-child { margin-bottom: 0; }