/* ==========================================================================
   Chessbrix: shared stylesheet
   Bauhaus-inspired: geometric shapes, confident type, cream + near-black +
   orange. Plain CSS, no build step, no external requests.
   ========================================================================== */

:root {
  --color-bg: #f5f0e8;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #4a4a4a;
  --color-accent: #e8420a;
  --color-accent-dark: #c93a08;
  --color-line: rgba(26, 26, 26, 0.12);
  --color-focus: #1a1a1a;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";

  --max-width: 1120px;
  --radius: 2px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1a1a1a;
    --color-surface: #232323;
    --color-text: #f5f0e8;
    --color-text-muted: #c9c2b6;
    --color-accent: #ff6a33;
    --color-accent-dark: #ff8452;
    --color-line: rgba(245, 240, 232, 0.16);
    --color-focus: #f5f0e8;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.55;
  font-size: 17px;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-text);
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:hover,
a:focus-visible {
  color: var(--color-accent-dark);
}

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

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 800;
}

h1 {
  font-size: clamp(2rem, 5vw + 1rem, 3.4rem);
  margin: 0 0 0.5em;
}

h2 {
  font-size: clamp(1.5rem, 2.5vw + 1rem, 2.2rem);
  margin: 0 0 0.6em;
}

h3 {
  font-size: 1.2rem;
  margin: 0 0 0.4em;
}

p {
  margin: 0 0 1em;
}

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

/* ---------- Header ---------- */

.site-header {
  border-bottom: 3px solid var(--color-text);
  background: var(--color-bg);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text);
}

.brand:hover,
.brand:focus-visible {
  color: var(--color-text);
}

.brand .mark {
  width: 34px;
  height: 34px;
  flex: none;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.main-nav a {
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--color-accent);
  color: var(--color-text);
}

/* ---------- Hero ---------- */

.hero {
  padding: 4rem 0 3rem;
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

@media (max-width: 800px) {
  .hero .container {
    grid-template-columns: 1fr;
  }
  .hero-art {
    order: -1;
    max-width: 260px;
    margin: 0 auto;
  }
}

.eyebrow {
  display: inline-block;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 0.3em 0.7em;
  margin-bottom: 1rem;
}

.hero p.lede {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.6rem;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  padding: 0.85em 1.5em;
  border-radius: var(--radius);
  border: 2px solid var(--color-text);
  background: var(--color-text);
  color: var(--color-bg);
  border-bottom: 4px solid var(--color-accent);
}

.btn:hover,
.btn:focus-visible {
  background: var(--color-bg);
  color: var(--color-text);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-text);
  border-bottom: 4px solid var(--color-accent);
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background: var(--color-text);
  color: var(--color-bg);
}

/* ---------- Sections ---------- */

section {
  padding: 3rem 0;
}

.section-alt {
  background: var(--color-surface);
  border-top: 3px solid var(--color-line);
  border-bottom: 3px solid var(--color-line);
}

.section-head {
  max-width: 60ch;
  margin: 0 0 2.2rem;
}

.section-head p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* ---------- Feature grid ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-bg);
  border: 2px solid var(--color-text);
  border-radius: var(--radius);
  padding: 1.6rem;
  position: relative;
}

.section-alt .feature-card {
  background: var(--color-surface);
}

.feature-card .icon {
  width: 40px;
  height: 40px;
  margin-bottom: 0.9rem;
}

.feature-card .stat {
  display: inline-block;
  font-weight: 800;
  color: var(--color-accent-dark);
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

/* ---------- Pricing ---------- */

.pricing-card {
  max-width: 480px;
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--radius);
  padding: 2.2rem;
  border-bottom: 6px solid var(--color-accent);
}

.pricing-card .price {
  font-size: 2.4rem;
  font-weight: 800;
  margin: 0.2em 0;
}

.pricing-card .price small {
  font-size: 1rem;
  font-weight: 600;
  opacity: 0.8;
}

.pricing-card .fine-print {
  font-size: 0.9rem;
  opacity: 0.85;
  margin-top: 1rem;
}

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

.store-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.6rem;
}

.store-badge-placeholder {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  border: 2px dashed var(--color-line);
  border-radius: var(--radius);
  padding: 0.75em 1.3em;
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  background: var(--color-surface);
}

.store-badge-placeholder svg {
  width: 26px;
  height: 26px;
  flex: none;
}

/* ---------- Content pages (legal/support) ---------- */

.page-content {
  max-width: 74ch;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.page-content h2 {
  margin-top: 1.8em;
  padding-top: 0.6em;
  border-top: 2px solid var(--color-line);
}

.page-content h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.page-content ul,
.page-content ol {
  padding-left: 1.3em;
}

.page-content li {
  margin-bottom: 0.5em;
}

.updated-note {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 0.3em 0.8em;
  margin-bottom: 1.5em;
}

.notice-box {
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
  margin: 1.5em 0;
}

.placeholder {
  background: color-mix(in srgb, var(--color-accent) 20%, transparent);
  border: 1px dashed var(--color-accent-dark);
  padding: 0.05em 0.4em;
  border-radius: 2px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-weight: 700;
}

/* ---------- Support FAQ ---------- */

.faq-item {
  border: 2px solid var(--color-text);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  margin-bottom: 1.2rem;
  background: var(--color-surface);
}

.faq-item h3 {
  margin-bottom: 0.4em;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 3px solid var(--color-text);
  background: var(--color-surface);
  padding: 2.5rem 0 2rem;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

.footer-brand {
  max-width: 32ch;
}

.footer-brand .brand {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
}

.footer-links h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 0.8em;
  color: var(--color-text);
}

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

.footer-links li {
  margin-bottom: 0.5em;
}

.footer-links a {
  text-decoration: none;
  color: var(--color-text-muted);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--color-accent-dark);
}

.footer-bottom {
  margin-top: 2.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--color-line);
}

/* ---------- Utility ---------- */

.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;
}

.scroll-x {
  overflow-x: auto;
}