/* ==========================================================================
   Clova Co marketing site — shared layout styles
   Load order: tokens.css → tailwind-utils.css → site.css
   Colours, radii and shadows reference tokens.css vars only.
   ========================================================================== */

:root {
  /* Marketing type scale — extends the app ramp for editorial headline sizes */
  --m-fs-hero: clamp(38px, 5.4vw, 66px);
  --m-lh-hero: 1.04;
  --m-fs-h2: clamp(28px, 3.4vw, 42px);
  --m-lh-h2: 1.12;
  --m-fs-lead: clamp(16px, 1.6vw, 19px);
  --m-lh-lead: 1.55;
  --m-fs-quote: clamp(24px, 2.8vw, 36px);
  --m-fs-stat: clamp(40px, 4.4vw, 60px);

  /* Layout */
  --m-container: 1280px;
  --m-section-y: clamp(64px, 9vw, 112px);
  --m-header-h: 64px;
}

/* ----- Base ------------------------------------------------------------- */
html { scroll-behavior: auto; }
body { margin: 0; font-size: var(--fs-subheading-1); line-height: var(--lh-subheading-1); font-weight: 400; }

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

a:hover { text-decoration: none; }

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring);
  border-radius: var(--radius-xs);
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--foreground); color: var(--background);
  padding: var(--space-3) var(--space-4); z-index: 100;
}
.skip-link:focus-visible { left: var(--space-4); top: var(--space-4); }

/* ----- Container & section rhythm --------------------------------------- */
.container {
  max-width: var(--m-container);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.section { padding-block: var(--m-section-y); }
.section-band { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* Narrow measure for editorial copy */
.measure { max-width: 720px; }

/* ----- Marketing type ----------------------------------------------------- */
.m-hero-title {
  font-family: var(--font-sans);
  font-size: var(--m-fs-hero);
  line-height: var(--m-lh-hero);
  font-weight: 600;
  letter-spacing: -0.032em;
  margin: 0;
  text-wrap: balance;
}
.m-h2 {
  font-family: var(--font-sans);
  font-size: var(--m-fs-h2);
  line-height: var(--m-lh-h2);
  font-weight: 600;
  letter-spacing: -0.025em;
  margin: 0;
  text-wrap: balance;
}
.m-lead {
  font-size: var(--m-fs-lead);
  line-height: var(--m-lh-lead);
  color: var(--n-600);
  margin: 0;
}
.m-overline {
  font: 600 12px/16px var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin: 0 0 var(--space-4);
}
.m-overline-muted { color: var(--muted-foreground); }

/* Placeholder tag — marks every piece of unapproved content */
.ph-tag {
  display: inline-block;
  font: 500 11px/16px var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--com-shade-30);
  background: var(--com-tint-30);
  border: 1px dashed var(--com-tint-10);
  border-radius: var(--radius-xs);
  padding: 2px 8px;
}

/* ----- Buttons (REFERENCE.html anatomy, lg size for 44px hit target) ----- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font: 500 13px/1 var(--font-sans);
  letter-spacing: 0.05em; text-transform: uppercase;
  height: 44px; padding: 0 var(--space-5);
  border-radius: var(--radius-sm); border: none; cursor: pointer;
  text-decoration: none; white-space: nowrap;
  transition: background-color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard);
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: var(--primary-foreground); }
.btn-primary:hover { background: var(--com-shade-10); }
.btn-primary:active { background: var(--com-shade-20); }
.btn-outline { background: transparent; color: var(--foreground); border: 1px solid var(--border); }
.btn-outline:hover { background: var(--n-100); }
/* Outline button on a dark band */
.btn-outline-inverse { background: transparent; color: var(--n-50); border: 1px solid var(--n-600); }
.btn-outline-inverse:hover { background: var(--n-750); }

/* ----- Header ------------------------------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--background);
  border-bottom: 1px solid var(--border);
}
.site-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-6); height: var(--m-header-h);
}
.brand {
  display: inline-flex; align-items: center; gap: var(--space-2);
  color: var(--foreground); text-decoration: none;
  font: 600 16px/1 var(--font-sans); letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; color: var(--foreground); }
.brand img { width: 28px; height: 28px; }

.site-nav { display: flex; align-items: center; gap: var(--space-1); }
.site-nav a {
  display: inline-flex; align-items: center;
  min-height: 44px; padding: 0 var(--space-3);
  font: 500 14px/1 var(--font-sans);
  color: var(--n-600); text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--dur-fast) var(--ease-standard),
              background-color var(--dur-fast) var(--ease-standard);
}
.site-nav a:hover { color: var(--foreground); background: var(--n-100); }
.site-nav a[aria-current="page"] { color: var(--foreground); }
.site-nav .nav-cta { margin-left: var(--space-2); }

/* Mobile nav (checkbox toggle, no JS) */
.nav-toggle { position: absolute; opacity: 0; width: 1px; height: 1px; }
.nav-burger {
  display: none; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  color: var(--foreground); cursor: pointer;
}
.nav-burger:hover { background: var(--n-100); }
.nav-toggle:focus-visible + .nav-burger {
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring);
}

/* ----- Hero --------------------------------------------------------------- */
.hero { padding-block: var(--m-section-y) 0; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(32px, 5vw, 72px); align-items: center;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }

/* ----- Screenshot placeholder frame --------------------------------------- */
.shot-frame {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--el-12);
  overflow: hidden;
}
.shot-chrome {
  display: flex; align-items: center; gap: var(--space-2);
  height: 36px; padding-inline: var(--space-4);
  background: var(--n-100); border-bottom: 1px solid var(--border);
}
.shot-chrome span { width: 10px; height: 10px; border-radius: var(--radius-full); background: var(--n-300); }
.shot-body {
  aspect-ratio: 16 / 10;
  background: var(--n-150);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-4); padding: var(--space-6); text-align: center;
}
.shot-body img { width: 56px; height: 56px; opacity: 0.7; }
.shot-label {
  font: 500 13px/20px var(--font-mono);
  color: var(--n-600); margin: 0;
}

/* ----- Logo strip ---------------------------------------------------------- */
.logo-strip {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
  gap: var(--space-4);
}
.logo-slot {
  display: flex; align-items: center; justify-content: center;
  height: 56px; min-width: 160px; flex: 1 1 160px; max-width: 200px;
  border: 1px dashed var(--n-300); border-radius: var(--radius-md);
  font: 500 12px/1 var(--font-mono); color: var(--n-400);
}

/* ----- Enemy vignettes ------------------------------------------------------ */
.vignette-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6); margin-top: var(--space-10);
}
.vignette { border-top: 2px solid var(--foreground); padding-top: var(--space-5); }
.vignette h3 { margin: 0 0 var(--space-2); }
.vignette p { color: var(--n-600); font-size: 15px; line-height: 24px; }

/* ----- Product cards --------------------------------------------------------- */
.product-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4); margin-top: var(--space-10);
}
.p-card {
  display: flex; flex-direction: column; gap: var(--space-3);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-4) var(--space-4);
  box-shadow: var(--el-02);
  color: var(--foreground); text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease-standard),
              background-color var(--dur-fast) var(--ease-standard);
}
a.p-card:hover { border-color: var(--n-400); text-decoration: none; }
a.p-card:hover .p-card-more { color: var(--com-shade-10); }
.p-card-icon { color: var(--primary); }
.p-card h3 { margin: 0; }
.p-card .p-kicker { font: 600 11px/16px var(--font-sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted-foreground); }
.p-card p { color: var(--n-600); font-size: 14px; line-height: 21px; flex: 1; }
.p-card-hints { font: 500 13px/18px var(--font-sans); color: var(--n-500); }
.p-card-more {
  font: 500 13px/1 var(--font-sans); color: var(--primary);
  display: inline-flex; align-items: center; gap: var(--space-1);
  transition: color var(--dur-fast) var(--ease-standard);
}
.p-card-soon { background: var(--n-100); box-shadow: none; }
.badge-soon {
  align-self: flex-start;
  display: inline-flex; align-items: center;
  font: 500 11px/18px var(--font-sans); letter-spacing: 0.06em; text-transform: uppercase;
  background: var(--n-150); color: var(--n-600);
  border: 1px solid var(--n-250);
  border-radius: var(--radius-full); padding: 2px 10px;
}

/* ----- Clova Labs callout (homepage) ------------------------------------------ */
.labs-cta {
  margin-top: var(--space-10);
  display: flex; align-items: center; gap: var(--space-5); flex-wrap: wrap;
  background: var(--com-tint-30); border: 1px solid var(--com-tint-10);
  border-radius: var(--radius-lg); padding: var(--space-6) var(--space-8);
}
.labs-cta-icon { color: var(--primary); flex-shrink: 0; }
.labs-cta-body { flex: 1 1 320px; }
.labs-cta-body h3 { margin: 0 0 var(--space-1); }
.labs-cta-body p { color: var(--com-shade-30); font-size: 15px; line-height: 22px; max-width: 620px; }
.labs-cta .btn { flex-shrink: 0; }

/* ----- Suite diagram (schematic placeholder) ---------------------------------- */
.suite-diagram { margin-top: var(--space-10); }
.suite-chips { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); }
.suite-chip {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--el-02);
  padding: var(--space-4); text-align: center;
  font: 600 15px/22px var(--font-sans);
}
.suite-chip small { display: block; margin-top: 2px; font: 400 13px/16px var(--font-sans); color: var(--muted-foreground); }
.suite-lines { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); height: 32px; }
.suite-lines span { width: 1px; height: 100%; margin-inline: auto; background: var(--n-300); }
.suite-core {
  background: var(--com-tint-30); border: 1px solid var(--com-tint-10); border-radius: var(--radius-lg);
  padding: var(--space-5); text-align: center;
}
.suite-core strong { display: block; font: 600 16px/24px var(--font-sans); color: var(--com-shade-30); }
.suite-core span { font: 500 13px/20px var(--font-sans); color: var(--com-shade-30); }

/* ----- Testimonial -------------------------------------------------------------- */
.quote { margin: 0; }
.quote p {
  font-family: var(--font-sans);
  font-size: var(--m-fs-quote); line-height: 1.25; font-weight: 500; letter-spacing: -0.02em;
  text-wrap: balance;
}
.quote footer { margin-top: var(--space-6); color: var(--muted-foreground); font-size: 14px; }

/* ----- Stats ---------------------------------------------------------------------- */
.stat-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6); margin-top: var(--space-10);
}
.stat { border-top: 1px solid var(--border); padding-top: var(--space-5); }
.stat-num {
  font-family: var(--font-mono);
  font-size: var(--m-fs-stat); line-height: 1.05; font-weight: 500; letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--foreground);
}
.stat-label { margin-top: var(--space-2); color: var(--n-600); font-size: 14px; line-height: 21px; }

/* ----- Steps ------------------------------------------------------------------------ */
.step-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-8) var(--space-6); margin: var(--space-10) 0 0;
  list-style: none; padding: 0;
}
.step-num { font: 500 14px/20px var(--font-mono); color: var(--primary); }
.step h3 { margin: var(--space-2) 0; }
.step p { color: var(--n-600); font-size: 14px; line-height: 21px; }

/* ----- Dark CTA band ------------------------------------------------------------------ */
.cta-band { background: var(--n-900); color: var(--n-50); }
.cta-band .m-h2 { color: var(--n-50); }
.cta-band p { color: var(--n-400); }
.cta-band :focus-visible { box-shadow: 0 0 0 2px var(--n-900), 0 0 0 4px var(--ring); }

/* ----- Footer ---------------------------------------------------------------------------- */
.site-footer { background: var(--n-100); border-top: 1px solid var(--border); }
.footer-grid {
  display: grid; grid-template-columns: minmax(0, 5fr) repeat(2, minmax(0, 3fr));
  gap: var(--space-8); padding-block: var(--space-14);
}
.footer-col h2 {
  font: 600 12px/16px var(--font-sans); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted-foreground); margin: 0 0 var(--space-4);
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.footer-col li a, .footer-col li span {
  display: inline-flex; align-items: center; min-height: 36px;
  font-size: 14px; color: var(--n-600); text-decoration: none;
}
.footer-col li a:hover { color: var(--foreground); }
.footer-col li span { color: var(--n-400); }
.footer-tag { margin-top: var(--space-3); color: var(--n-600); font-size: 14px; max-width: 280px; }
.footer-legal {
  border-top: 1px solid var(--border);
  padding-block: var(--space-5);
  display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: space-between;
  font: 400 12px/18px var(--font-mono); color: var(--muted-foreground);
}

/* ----- Sub-page hero (product / about / contact) -------------------------- */
.subhero { padding-block: var(--m-section-y) 0; }
.subhero .m-lead { margin-top: var(--space-6); }
.subhero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }
.product-logo { height: 28px; width: auto; margin-bottom: var(--space-5); }

/* ----- Alternating image/text feature rows (Patchwork pattern) ------------ */
.feature {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px); align-items: center;
}
.feature.reverse .feature-text { order: 2; }
.feature-text h2 { margin: 0; }
.feature-text > p { margin-top: var(--space-4); }
.feat-list { list-style: none; margin: var(--space-5) 0 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-3); }
.feat-list li { display: flex; gap: var(--space-3); font-size: 15px; line-height: 23px; color: var(--n-600); }
.feat-list li svg { color: var(--primary); flex-shrink: 0; margin-top: 3px; }

/* ----- 2-up cross-sell ----------------------------------------------------- */
.cross-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); margin-top: var(--space-8); }

/* ----- Belief stances (About) --------------------------------------------- */
.belief-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6) var(--space-8); margin-top: var(--space-10); }

/* ----- Trust strip (Contact) ---------------------------------------------- */
.trust-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); margin-top: var(--space-8); }
.trust-item { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); background: var(--card); box-shadow: var(--el-02); }
.trust-item h3 { margin: 0 0 var(--space-2); }
.trust-item p { color: var(--n-600); font-size: 14px; line-height: 21px; }

/* ----- Contact form -------------------------------------------------------- */
.form-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--el-04);
  padding: clamp(20px, 3vw, 32px);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field.full { grid-column: 1 / -1; }
.field label { font: 500 14px/20px var(--font-sans); color: var(--foreground); }
.field input, .field select, .field textarea {
  font: 400 15px/22px var(--font-sans);
  padding: 10px 12px; width: 100%;
  background: var(--background); color: var(--foreground);
  border: 1px solid var(--input); border-radius: var(--radius-md);
}
.field textarea { resize: vertical; min-height: 96px; }
.field input::placeholder, .field textarea::placeholder { color: var(--muted-foreground); }
.checks { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-1); }
.check { display: inline-flex; align-items: center; gap: var(--space-2); font-size: 14px; color: var(--n-600); min-height: 44px; }
.check input { width: 18px; height: 18px; accent-color: var(--primary); }
.form-actions { margin-top: var(--space-6); display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; }
.form-note { font-size: 13px; color: var(--muted-foreground); }

/* ----- Responsive --------------------------------------------------------------------------- */
@media (max-width: 1023px) {
  .hero-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature { grid-template-columns: 1fr; gap: var(--space-8); }
  .feature.reverse .feature-text { order: 0; }
}

/* Collapse the inline nav to a menu before four products + About + CTA crowd.
   Higher than the 767px content breakpoint so iPad-portrait gets the clean menu. */
@media (max-width: 900px) {
  .nav-burger { display: inline-flex; }
  .site-nav {
    display: none;
    position: absolute; top: var(--m-header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--background);
    border-bottom: 1px solid var(--border);
    padding: var(--space-3) var(--space-6) var(--space-5);
  }
  .nav-toggle:checked ~ .site-nav { display: flex; }
  .site-nav a { min-height: 48px; white-space: nowrap; }
  .site-nav .nav-cta { margin: var(--space-3) 0 0; }
}

@media (max-width: 767px) {
  .vignette-grid, .stat-grid, .step-grid,
  .product-grid, .suite-chips { grid-template-columns: 1fr; }
  .cross-grid, .belief-grid, .trust-grid, .form-grid { grid-template-columns: 1fr; }
  .suite-lines { grid-template-columns: 1fr; height: 24px; }
  .suite-lines span:not(:first-child) { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
}