/* ============================================================
   Dacodi — Landing page styles
   Light-first B2B. Deep blue for structure, graphite for 99%,
   precise green as single accent. No flashy effects.
   ============================================================ */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-canvas);
  color: var(--fg-1);
  font-family: var(--font-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

/* Scrollbar gutters stable to prevent layout shift */
html { scrollbar-gutter: stable; }

/* Eyebrow color override — match reference mockups (dark, muted).
   Green is reserved as single accent per hero (status dot, accent node). */
.ds-eyebrow,
.eyebrow {
  color: var(--fg-3);
}

/* ============================================================
   Focus-visible — always visible, per spec (3px, 28% opacity blue)
   ============================================================ */
:focus { outline: none; }
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-md);
}

/* ============================================================
   Layout
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ============================================================
   Sticky header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-standard),
              background var(--dur-base) var(--ease-standard);
}
.site-header.is-scrolled {
  border-bottom-color: var(--border-1);
  background: rgba(255, 255, 255, 0.92);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border-radius: var(--radius-md);
}
.brand img { height: 28px; width: auto; }

.nav {
  display: flex;
  gap: var(--sp-1);
}
.nav a {
  color: var(--fg-1);
  text-decoration: none;
  font-size: var(--fs-15);
  font-weight: var(--fw-medium);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  transition: background var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard);
}
.nav a.active { background: var(--graphite-100); }
.nav a:hover  { background: var(--graphite-50); }

.header-right {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}
.lang {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--fg-3);
  letter-spacing: 0;
}
.lang .sep { margin: 0 6px; color: var(--fg-4); }
.lang .active { color: var(--fg-1); font-weight: 500; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 18px;
  border-radius: var(--radius-md);
  font: var(--fw-semibold) var(--fs-15)/1 var(--font-sans);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease-standard),
              filter    var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              box-shadow var(--dur-fast) var(--ease-standard);
}
.btn-primary {
  background: var(--blue-950);
  color: var(--white);
  border-color: var(--blue-950);
}
.btn-primary:hover  { filter: brightness(0.92); }
.btn-primary:active { filter: brightness(0.86); box-shadow: 0 1px 0 rgba(10,22,40,0.25) inset; }

.btn-secondary {
  background: var(--white);
  color: var(--fg-1);
  border-color: var(--border-1);
}
.btn-secondary:hover  { background: var(--graphite-50); border-color: var(--border-strong); }
.btn-secondary:active { background: var(--graphite-100); }

.btn-ghost {
  background: transparent;
  color: var(--fg-inverse);
  border-color: rgba(255, 255, 255, 0.22);
}
.btn-ghost:hover  { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.35); }
.btn-ghost:active { background: rgba(255, 255, 255, 0.12); }

.btn[disabled],
.btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; }

.btn .icon {
  width: 16px;
  height: 16px;
  stroke-width: 1.5;
}

/* ============================================================
   Reveal-on-scroll — max 16px translate, fade from 0.6
   ============================================================ */
[data-reveal] {
  opacity: 0.6;
  transform: translateY(16px);
  transition: opacity var(--dur-slow) var(--ease-standard),
              transform var(--dur-slow) var(--ease-standard);
  will-change: opacity, transform;
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}
[data-reveal-delay="1"] { transition-delay: 60ms; }
[data-reveal-delay="2"] { transition-delay: 120ms; }
[data-reveal-delay="3"] { transition-delay: 180ms; }
[data-reveal-delay="4"] { transition-delay: 240ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   Hero
   Soft vertical gradient 0→4% tint of graphite-50 (spec exception).
   Subtle grid pattern as backdrop.
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding: var(--sp-24) 0 var(--sp-20);
  background: linear-gradient(180deg, var(--graphite-50) 0%, var(--white) 60%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('assets/pattern-grid.svg');
  background-repeat: repeat;
  background-size: 32px 32px;
  opacity: 0.18;
  mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 80%);
  pointer-events: none;
  z-index: 1;
}
.hero .container { position: relative; z-index: 3; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--sp-12);
  align-items: center;
  min-height: 380px;
}
.hero .eyebrow { margin-bottom: var(--sp-6); display: inline-block; }
.hero h1 {
  margin: 0 0 var(--sp-6);
  font-size: clamp(2.25rem, 4.8vw, var(--fs-72));
  line-height: var(--lh-tight);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-tighter);
  text-wrap: balance;
  color: var(--fg-1);
}
.hero p.lede {
  color: var(--fg-2);
  font-size: var(--fs-18);
  line-height: var(--lh-relaxed);
  max-width: 52ch;
  margin: 0 0 var(--sp-8);
  text-wrap: pretty;
}
.hero-cta { display: flex; gap: var(--sp-3); flex-wrap: wrap; }

.status-row {
  margin-top: var(--sp-8);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4) var(--sp-6);
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--fg-3);
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  color: var(--fg-2);
  font-size: var(--fs-13);
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--green-500);
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.18);
  flex-shrink: 0;
}

/* Mesh backdrop, hero right side */
.mesh {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}
.mesh canvas { width: 100%; height: 100%; display: block; }
.mesh-hero { right: 0; top: 0; left: 46%; }

/* ============================================================
   Stats row — divider lines between columns
   ============================================================ */
.stats {
  margin-top: var(--sp-16);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--border-1);
  padding-top: var(--sp-10);
}
.stat {
  padding: 0 var(--sp-6);
  border-right: 1px solid var(--border-1);
}
.stat:first-child { padding-left: 0; }
.stat:last-child  { padding-right: 0; border-right: none; }
.stat .num {
  font-size: var(--fs-36);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--fg-1);
  line-height: 1.05;
}
.stat .label {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--fg-3);
}

/* ============================================================
   Section
   ============================================================ */
.section { padding: var(--sp-24) 0; }

.section-head { max-width: 720px; margin-bottom: var(--sp-16); }
.section-head .eyebrow { margin-bottom: var(--sp-4); display: inline-block; }
.section-head h2 {
  margin: 0 0 var(--sp-5);
  font-size: clamp(1.75rem, 3.4vw, var(--fs-48));
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-tighter);
  line-height: var(--lh-tight);
  text-wrap: balance;
  color: var(--fg-1);
}
.section-head p {
  color: var(--fg-2);
  font-size: var(--fs-18);
  margin: 0;
  line-height: var(--lh-relaxed);
  text-wrap: pretty;
  max-width: 60ch;
}

/* ============================================================
   Service cards — standard card: white, 1px border-1, 8px, shadow-sm
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-6);
  align-items: stretch;
}
.service-card {
  display: flex;
  flex-direction: column;
  min-height: 320px;
  background: var(--white);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur-base) var(--ease-standard),
              border-color var(--dur-base) var(--ease-standard);
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-2);
}
.service-card .card-icon {
  width: 28px;
  height: 28px;
  color: var(--fg-1);
  stroke-width: 1.5;
  margin-bottom: var(--sp-6);
}
.service-card h3 {
  margin: 0 0 var(--sp-3);
  font-size: var(--fs-20);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--fg-1);
  line-height: var(--lh-snug);
}
.service-card p {
  color: var(--fg-2);
  font-size: var(--fs-15);
  line-height: var(--lh-relaxed);
  margin: 0 0 var(--sp-6);
  flex: 1 1 auto;
}
.service-card .meta {
  margin-top: auto;
  padding-top: var(--sp-4);
  border-top: 1px dashed var(--border-1);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--fg-3);
}

/* ============================================================
   Testimonial — quote mark above quote, not beside
   ============================================================ */
.testimonial {
  background: var(--graphite-50);
  border-top: 1px solid var(--border-1);
  border-bottom: 1px solid var(--border-1);
}
.testimonial .container {
  padding-top: var(--sp-24);
  padding-bottom: var(--sp-24);
  max-width: 960px;
}
.quote-mark {
  font-family: var(--font-sans);
  font-weight: var(--fw-bold);
  font-size: 72px;
  line-height: 0.7;
  color: var(--fg-1);
  margin-bottom: var(--sp-8);
  user-select: none;
}
.quote-body blockquote {
  margin: 0 0 var(--sp-10);
  font-size: clamp(1.25rem, 2.2vw, var(--fs-30));
  font-weight: var(--fw-semibold);
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-tight);
  color: var(--fg-1);
  text-wrap: balance;
}
.author {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}
.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-pill);
  background: var(--blue-950);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: var(--fw-bold);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.author-name { font-weight: var(--fw-semibold); color: var(--fg-1); font-size: var(--fs-15); }
.author-meta { color: var(--fg-3); font-size: var(--fs-14); margin-top: 2px; }

/* ============================================================
   CTA — dark section, animated mesh backdrop
   ============================================================ */
.cta {
  position: relative;
  overflow: hidden;
  background: var(--blue-950);
  color: var(--fg-inverse);
}
.cta .container { position: relative; z-index: 2; }
.cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--sp-12);
  align-items: center;
  padding: var(--sp-24) 0;
}
.cta h2 {
  margin: 0 0 var(--sp-5);
  color: var(--white);
  font-size: clamp(1.75rem, 3.4vw, var(--fs-48));
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-tighter);
  line-height: var(--lh-tight);
  text-wrap: balance;
}
.cta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: var(--fs-18);
  line-height: var(--lh-relaxed);
  max-width: 52ch;
  text-wrap: pretty;
}
.cta-actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }

.cta .btn-primary {
  background: var(--white);
  color: var(--fg-1);
  border-color: var(--white);
}
.cta .btn-primary:hover  { filter: brightness(0.96); }
.cta .btn-primary:active { filter: brightness(0.90); }

.mesh-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.9;
}
.cta .mesh-canvas { opacity: 0.6; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--blue-950);
  color: var(--fg-inverse);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer .container {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--sp-10);
  padding-top: var(--sp-16);
  padding-bottom: var(--sp-10);
}
.footer-brand img { height: 28px; }
.footer-brand p {
  margin-top: var(--sp-4);
  max-width: 36ch;
  color: rgba(255, 255, 255, 0.65);
  font-size: var(--fs-14);
  line-height: var(--lh-relaxed);
}
.footer-status {
  margin-top: var(--sp-5);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: rgba(255, 255, 255, 0.65);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-col h4 {
  margin: 0 0 var(--sp-4);
  font-size: var(--fs-12);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  font-weight: var(--fw-semibold);
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li + li { margin-top: 10px; }
.footer-col a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: var(--fs-15);
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard);
}
.footer-col a:hover {
  color: var(--white);
  border-bottom-color: rgba(255, 255, 255, 0.5);
}
.footer-col a:focus-visible {
  box-shadow: 0 0 0 3px rgba(107, 151, 218, 0.38);
  border-radius: 2px;
}

.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); }
.footer-bottom .container {
  grid-template-columns: 1fr auto;
  padding-top: var(--sp-5);
  padding-bottom: var(--sp-10);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: rgba(255, 255, 255, 0.55);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1020px) {
  .hero-grid { grid-template-columns: 1fr; min-height: 0; }
  .mesh-hero { left: 0; right: 0; top: auto; bottom: -80px; height: 280px; opacity: 0.5; }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: var(--sp-8); }
  .stat:nth-child(2) { border-right: none; padding-right: 0; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-inner { grid-template-columns: 1fr; }
  .footer .container { grid-template-columns: 1fr 1fr; }
  .nav { display: none; }
}
@media (max-width: 600px) {
  :root { --container-pad: 20px; }
  .section { padding: var(--sp-20) 0; }
  .hero { padding: var(--sp-20) 0 var(--sp-16); }
  .services-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .footer .container { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .lang { display: none; }
}