/* simplecaptcha — marketing & docs site
   Palette: near-white paper, dark green-tinged ink, one deep accent green.
   Type: system sans for display/body, ui-monospace as the engineered utility face.
   No external resources of any kind. */

:root {
  --bg: #fafaf7;
  --panel: #ffffff;
  --ink: #1a201c;
  --muted: #59635d;
  --accent: #0b5a41;
  --accent-hover: #094a36;
  --accent-soft: #e7efe9;
  --line: #dee3de;
  --line-strong: #c6cec8;
  --ghost: #c3ccc6;
  --code-bg: #16211b;
  --code-ink: #dae5dd;
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Code', Menlo, Consolas, 'Liberation Mono', monospace;
  --shell: 66rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 1.5rem;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

::selection {
  background: var(--accent-soft);
}

.skip-link {
  position: absolute;
  left: -999rem;
  top: 0;
  z-index: 10;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1rem;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
  color: #fff;
}

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  min-height: 4rem;
  flex-wrap: wrap;
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}

.wordmark {
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.wordmark .cursor {
  color: var(--accent);
  animation: blink 1.4s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.site-nav {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--accent);
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.lang-switch {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 0.2rem 0.55rem;
}

.lang-switch:hover {
  color: var(--accent);
  border-color: var(--accent);
}

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

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.2;
  text-decoration: none;
  border-radius: 6px;
  padding: 0.85rem 1.5rem;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-secondary {
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-small {
  font-size: 0.875rem;
  padding: 0.45rem 0.9rem;
}

/* ---------- hero ---------- */

.hero {
  padding: 5.5rem 0 4.5rem;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.4rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6.5vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin: 0 0 1.5rem;
  max-width: 20ch;
}

.ghost-word {
  color: var(--ghost);
}

@supports (-webkit-text-stroke: 1px black) {
  .ghost-word {
    color: transparent;
    -webkit-text-stroke: 1.5px var(--ink);
  }
}

.hero .lede {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--muted);
  max-width: 44rem;
  margin: 0 0 2.2rem;
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-bottom: 2.6rem;
}

.hero-facts {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.1rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-facts li + li::before {
  content: '·';
  color: var(--line-strong);
  margin-right: 1.1rem;
}

/* ---------- sections ---------- */

.section {
  border-top: 1px solid var(--line);
  padding: 4.5rem 0;
}

.section h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.2rem);
  letter-spacing: -0.02em;
  font-weight: 750;
  line-height: 1.15;
  margin: 0 0 1rem;
  max-width: 26ch;
}

.section .section-intro {
  color: var(--muted);
  max-width: 44rem;
  margin: 0 0 2.5rem;
}

/* ---------- demo: the instrument panel ---------- */

.demo-panel {
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.demo-form-side {
  padding: 2rem;
}

.demo-form-side h3 {
  margin: 0 0 1.2rem;
  font-size: 1.05rem;
  font-weight: 650;
}

.demo-panel label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.demo-panel input[type='text'],
.demo-panel input[type='email'],
.demo-panel textarea {
  width: 100%;
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 0.6rem 0.75rem;
  margin-bottom: 1.1rem;
}

.demo-panel input:focus,
.demo-panel textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 0;
  border-color: var(--accent);
}

.demo-panel button[type='submit'] {
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  padding: 0.7rem 1.4rem;
  cursor: pointer;
}

.demo-panel button[type='submit']:hover {
  background: var(--accent-hover);
}

.demo-readout {
  background: var(--code-bg);
  color: var(--code-ink);
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.7;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.demo-readout-title {
  color: #8fa79a;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
  margin: 0;
}

.demo-blocks {
  display: flex;
  gap: 5px;
}

.demo-blocks span {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: #2c3b32;
}

[data-state='solving'] .demo-blocks span {
  animation: block-fill 1.3s infinite;
  animation-delay: calc(var(--i) * 0.11s);
}

[data-state='solved'] .demo-blocks span,
[data-state='submitted'] .demo-blocks span {
  background: #4fbd93;
}

@keyframes block-fill {
  0%,
  100% {
    background: #2c3b32;
  }
  45%,
  70% {
    background: #4fbd93;
  }
}

.demo-status {
  margin: 0;
  min-height: 3.4em;
}

.demo-status::before {
  content: '> ';
  color: #4fbd93;
}

.demo-readout-footer {
  margin-top: auto;
  color: #71857a;
  font-size: 0.78rem;
}

.demo-fallback-note {
  display: none;
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.demo-fallback-note.visible {
  display: block;
}

.demo-caption {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* ---------- how it works ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.steps h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 650;
}

.steps p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.steps pre {
  margin: 0.3rem 0 0;
}

/* honesty aside */

.honesty {
  margin-top: 2.5rem;
  border: 1px solid var(--accent);
  border-left-width: 4px;
  border-radius: 8px;
  background: var(--accent-soft);
  padding: 1.6rem 1.8rem;
  max-width: 52rem;
}

.honesty h3 {
  margin: 0 0 0.6rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.honesty p {
  margin: 0.5rem 0 0;
  font-size: 0.98rem;
}

/* ---------- privacy ---------- */

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.privacy-grid article {
  border-top: 2px solid var(--accent);
  padding-top: 1rem;
}

.privacy-grid h3 {
  margin: 0 0 0.5rem;
  font-size: 1.02rem;
  font-weight: 650;
}

.privacy-grid p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.subprocessors {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  overflow: hidden;
}

.subprocessors .row {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 1.5rem;
  padding: 1.4rem 1.8rem;
}

.subprocessors .row + .row {
  border-top: 1px solid var(--line);
}

.subprocessors .path {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 0.2rem;
}

.subprocessors h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
  font-weight: 650;
}

.subprocessors p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

/* ---------- pricing ---------- */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 26rem));
  gap: 1.5rem;
}

.plan {
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--panel);
  padding: 2rem;
  display: flex;
  flex-direction: column;
}

.plan-name {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.8rem;
}

.plan-price {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0;
  line-height: 1.1;
}

.plan-price small {
  font-size: 1rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
}

.plan ul {
  list-style: none;
  margin: 1.4rem 0 1.8rem;
  padding: 0;
  font-size: 0.97rem;
}

.plan li {
  padding: 0.45rem 0 0.45rem 1.5rem;
  position: relative;
}

.plan li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.plan .btn {
  margin-top: auto;
  text-align: center;
}

.pricing-note {
  margin-top: 2rem;
  max-width: 46rem;
  font-size: 0.95rem;
  color: var(--muted);
}

/* ---------- code ---------- */

pre {
  background: var(--code-bg);
  color: var(--code-ink);
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.6;
  border-radius: 8px;
  padding: 1.1rem 1.3rem;
  overflow-x: auto;
  margin: 1.4rem 0;
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
}

:not(pre) > code {
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 0.12em 0.35em;
}

pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

/* ---------- docs ---------- */

.docs-layout {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: 3.5rem;
  padding: 3rem 0 5rem;
}

.docs-sidebar {
  position: sticky;
  top: 1.5rem;
  align-self: start;
}

.docs-sidebar h2 {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.8rem;
}

.docs-sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.docs-sidebar a {
  display: block;
  padding: 0.4rem 0 0.4rem 1rem;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.93rem;
  border-left: 2px solid transparent;
  margin-left: -1px;
}

.docs-sidebar a:hover {
  color: var(--accent);
}

.docs-sidebar a[aria-current='page'] {
  color: var(--accent);
  font-weight: 650;
  border-left-color: var(--accent);
}

.docs-content h1 {
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  letter-spacing: -0.025em;
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 1.2rem;
}

.docs-content h2 {
  font-size: 1.45rem;
  letter-spacing: -0.015em;
  font-weight: 700;
  margin: 2.4rem 0 0.8rem;
}

.docs-content h3 {
  font-size: 1.1rem;
  font-weight: 650;
  margin: 1.8rem 0 0.6rem;
}

.docs-content p,
.docs-content li {
  max-width: 46rem;
}

.table-wrap {
  overflow-x: auto;
  margin: 1.4rem 0;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.docs-content table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}

.docs-content th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: left;
  color: var(--muted);
  background: var(--accent-soft);
  padding: 0.7rem 1rem;
}

.docs-content td {
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--line);
  vertical-align: top;
}

.docs-content td:first-child {
  font-family: var(--mono);
  font-size: 0.83rem;
  white-space: nowrap;
}

/* ---------- legal / draft ---------- */

.legal {
  padding: 3.5rem 0 5rem;
  max-width: 46rem;
}

.legal h1 {
  font-size: 2.2rem;
  letter-spacing: -0.025em;
  font-weight: 800;
  margin: 0 0 1.2rem;
}

.draft-banner {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: #7a4a00;
  background: #fdf3e0;
  border: 1px solid #ecd9b4;
  border-radius: 8px;
  padding: 0.9rem 1.2rem;
  margin: 0 0 2rem;
}

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

.site-footer {
  border-top: 1px solid var(--line);
  padding: 3.5rem 0;
  margin-top: 2rem;
  font-size: 0.93rem;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
}

.wordmark-footer {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 0.6rem;
}

.footer-about p {
  margin: 0 0 0.8rem;
  max-width: 34rem;
}

.footer-note {
  font-size: 0.83rem;
}

.footer-heading {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.8rem;
  font-weight: 600;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li {
  margin-bottom: 0.45rem;
}

.site-footer a {
  color: var(--ink);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
}

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

@media (max-width: 56rem) {
  .demo-panel,
  .steps,
  .privacy-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .subprocessors .row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .docs-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .docs-sidebar {
    position: static;
  }

  .docs-sidebar ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.2rem 1.2rem;
    border-left: none;
  }

  .docs-sidebar a {
    padding: 0.3rem 0;
    border-left: none;
    border-bottom: 2px solid transparent;
  }

  .docs-sidebar a[aria-current='page'] {
    border-bottom-color: var(--accent);
  }

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

  .hero {
    padding: 3.5rem 0 3rem;
  }

  .section {
    padding: 3rem 0;
  }
}

@media (max-width: 40rem) {
  .header-inner {
    gap: 0.4rem 1rem;
  }

  .site-nav {
    order: 3;
    width: 100%;
    gap: 0.2rem 1.1rem;
    padding-bottom: 0.4rem;
  }

  .site-nav a {
    font-size: 0.9rem;
  }

  .header-actions .btn {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .wordmark .cursor {
    animation: none;
  }

  [data-state='solving'] .demo-blocks span {
    animation: none;
    background: #4fbd93;
  }
}