/* ============================================================================
   Lagoon Labs — design system
   Premium, dark-first. Quicksand throughout. Accent used sparingly.
   ========================================================================== */

/* ---- Fonts (self-hosted Quicksand; Google Fonts is not used) ------------- */
@font-face {
  font-family: "Quicksand";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/static/fonts/quicksand-400.woff2") format("woff2");
}
@font-face {
  font-family: "Quicksand";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/static/fonts/quicksand-500.woff2") format("woff2");
}
@font-face {
  font-family: "Quicksand";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/static/fonts/quicksand-600.woff2") format("woff2");
}
@font-face {
  font-family: "Quicksand";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/static/fonts/quicksand-700.woff2") format("woff2");
}

/* ---- Tokens -------------------------------------------------------------- */
:root {
  --bg: #08090b;
  --bg-2: #0d1012;
  --bg-3: #12161890;
  --text: #f5f7f7;
  --text-2: #9aa5a5;
  --muted: #687272;
  --accent: #19d3c5;
  --accent-dim: #12a99d;

  --border: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.14);
  --border-strong: rgba(255, 255, 255, 0.22);
  --card: rgba(255, 255, 255, 0.018);
  --card-hover: rgba(255, 255, 255, 0.04);
  --glow: rgba(25, 211, 197, 0.14);
  --header-scrolled: rgba(8, 9, 11, 0.72);
  --overlay-bg: rgba(8, 9, 11, 0.96);
  --bg-rgb: 8, 9, 11;

  --ff:
    "Quicksand", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    sans-serif;

  --wrap: 1200px;
  --wrap-wide: 1320px;
  --pad-x: 40px;
  --header-h: 68px;

  --r-sm: 8px;
  --r: 14px;
  --r-lg: 20px;

  --tr: 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
  --tr-fast: 0.16s ease;

  --sec-y: 128px;
}

/* accent color per project variant (drives glyph gradients + card glow) */
.accent-teal {
  --accent: #19d3c5;
  --accent-dim: #12a99d;
}
.accent-cyan {
  --accent: #35c7e0;
  --accent-dim: #2597ab;
}
.accent-slate {
  --accent: #7fa6b6;
  --accent-dim: #5c8091;
}

/* ---- Reset / base -------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ff);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}
img,
svg,
canvas {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
}
h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.015em;
}
p {
  margin: 0;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
::selection {
  background: var(--glow);
  color: var(--text);
}

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

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  background: var(--accent);
  color: #05201d;
  padding: 10px 16px;
  border-radius: var(--r-sm);
  font-weight: 600;
  transition: top var(--tr-fast);
}
.skip-link:focus {
  top: 12px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* ---- Buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.005em;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition:
    transform var(--tr-fast),
    background var(--tr),
    border-color var(--tr),
    color var(--tr);
  white-space: nowrap;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: var(--accent);
  color: #04211e;
  box-shadow: 0 0 0 0 var(--glow);
}
.btn-primary:hover {
  background: #2ee0d2;
  box-shadow: 0 8px 30px -8px var(--glow);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-2);
}
.btn-ghost:hover {
  border-color: var(--border-strong);
  background: var(--card-hover);
}
.btn-sm {
  padding: 9px 16px;
  font-size: 14px;
}

/* ---- Header -------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition:
    background var(--tr),
    border-color var(--tr),
    backdrop-filter var(--tr);
}
.site-header.is-scrolled {
  background: var(--header-scrolled);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 15px;
  color: var(--text);
}
.brand-mark {
  color: var(--accent);
  display: inline-flex;
}
.brand-word {
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  position: relative;
  padding: 8px 14px;
  font-weight: 500;
  font-size: 14.5px;
  color: var(--text-2);
  border-radius: 999px;
  transition: color var(--tr-fast);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--tr);
  opacity: 0.8;
}
.nav-link:hover {
  color: var(--text);
}
.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}
.nav-link.is-active {
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-2);
  border-radius: 10px;
}
.menu-bars {
  display: grid;
  gap: 4px;
}
.menu-bars i {
  display: block;
  width: 18px;
  height: 1.6px;
  background: var(--text);
  transition:
    transform var(--tr),
    opacity var(--tr-fast);
}
body.menu-open .menu-bars i:nth-child(1) {
  transform: translateY(5.6px) rotate(45deg);
}
body.menu-open .menu-bars i:nth-child(2) {
  opacity: 0;
}
body.menu-open .menu-bars i:nth-child(3) {
  transform: translateY(-5.6px) rotate(-45deg);
}

/* ---- Mobile menu --------------------------------------------------------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--overlay-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: calc(var(--header-h) + 20px) var(--pad-x) 40px;
  opacity: 0;
  transition: opacity var(--tr);
}
body.menu-open .mobile-menu {
  opacity: 1;
}
.mobile-menu__inner {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
}
.mobile-nav {
  display: flex;
  flex-direction: column;
}
.mobile-link {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.02em;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  transition:
    color var(--tr-fast),
    padding-left var(--tr);
}
.mobile-link:hover {
  color: var(--accent);
  padding-left: 8px;
}
.mobile-cta {
  justify-content: center;
  margin-top: 24px;
}
.mobile-menu__meta {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--text-2);
  font-size: 15px;
}
.mobile-menu__meta a:hover {
  color: var(--accent);
}

/* ---- Hero ---------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--header-h) + 40px) 0 80px;
  overflow: hidden;
}
.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-canvas,
.hero-svg-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-canvas {
  opacity: 0;
  transition: opacity 0.8s ease;
}
.hero-canvas.is-live {
  opacity: 1;
}
.hero-canvas.is-live + .hero-svg-fallback {
  opacity: 0;
}
.hero-svg-fallback {
  opacity: 0.9;
  transition: opacity 0.6s ease;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(
    ellipse 80% 60% at 50% 40%,
    #000 0%,
    transparent 75%
  );
  -webkit-mask-image: radial-gradient(
    ellipse 80% 60% at 50% 40%,
    #000 0%,
    transparent 75%
  );
  opacity: 0.5;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(
      60% 50% at 50% 42%,
      transparent 40%,
      rgba(var(--bg-rgb), 0.6) 100%
    ),
    linear-gradient(
      180deg,
      rgba(var(--bg-rgb), 0.5) 0%,
      transparent 20%,
      transparent 60%,
      var(--bg) 100%
    );
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
}
.hero-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(2.6rem, 6.4vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin-bottom: 26px;
}
.accent-text {
  color: var(--accent);
}
.hero-lede {
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  color: var(--text-2);
  max-width: 620px;
  line-height: 1.6;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  z-index: 2;
  width: 26px;
  height: 44px;
}
.hero-scroll__line {
  position: absolute;
  left: 50%;
  top: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(var(--text-2), transparent);
  overflow: hidden;
}
.hero-scroll__line::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 40%;
  background: var(--accent);
  animation: scrollLine 2.2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(250%);
  }
}

/* ---- Sections + labels --------------------------------------------------- */
.section {
  padding: var(--sec-y) 0;
  position: relative;
}
.section--approach {
  border-top: 1px solid var(--border);
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 34px;
}
.section-label__num {
  color: var(--accent);
}
.section-label__sep {
  color: var(--border-strong);
}
.section-label__text {
  color: var(--text-2);
}

.section-head {
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  max-width: 18ch;
}
.section-head--wide {
  max-width: 24ch;
  margin-bottom: 56px;
}

/* ---- 01 Approach --------------------------------------------------------- */
.approach-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: start;
}
.approach-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.approach-body p {
  color: var(--text-2);
  font-size: 1.08rem;
}

/* ---- 02 Capabilities (editorial list) ------------------------------------ */
.cap-list {
  border-top: 1px solid var(--border);
}
.cap-item {
  display: grid;
  grid-template-columns: 56px minmax(200px, 300px) 1fr 28px;
  align-items: baseline;
  gap: 24px;
  padding: 28px 8px;
  border-bottom: 1px solid var(--border);
  transition:
    background var(--tr),
    padding-left var(--tr);
  position: relative;
}
.cap-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--tr);
}
.cap-item:hover {
  background: var(--card-hover);
  padding-left: 20px;
}
.cap-item:hover::before {
  transform: scaleY(1);
}
.cap-item__index {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.cap-item__title {
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}
.cap-item__body {
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1.55;
}
.cap-item__mark {
  color: var(--accent);
  opacity: 0;
  transform: translateX(-8px);
  transition:
    opacity var(--tr),
    transform var(--tr);
  justify-self: end;
}
.cap-item:hover .cap-item__mark {
  opacity: 1;
  transform: translateX(0);
}

/* ---- 03 Engineering principles ------------------------------------------- */
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.principle {
  background: var(--bg);
  padding: 34px 30px;
  transition: background var(--tr);
}
/* 7 principles in a 3-col grid leave a lone item on the last row — let it
   stretch across the remaining columns so there are no empty cells. */
.principle-grid {
  grid-auto-flow: dense;
}
.principle:last-child:nth-child(3n + 1) {
  grid-column: 1 / -1;
}
.principle:hover {
  background: var(--bg-2);
}
.principle__title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.principle__title::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--glow);
}
.principle__body {
  color: var(--text-2);
  font-size: 0.98rem;
  line-height: 1.55;
}

/* ---- 04 Technology ------------------------------------------------------- */
.tech-intro {
  color: var(--text-2);
  max-width: 52ch;
  margin-bottom: 40px;
  font-size: 1.08rem;
}
.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 14px;
}
.tech-item {
  font-size: clamp(1.1rem, 2.4vw, 1.8rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text-2);
  padding: 6px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition:
    color var(--tr-fast),
    border-color var(--tr-fast),
    background var(--tr-fast);
}
.tech-item:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--card);
}

/* ---- 05 Selected work ---------------------------------------------------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.work-card {
  grid-column: span 1;
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition:
    transform var(--tr),
    border-color var(--tr),
    background var(--tr);
}
.work-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-2);
  background: var(--card-hover);
}
.work-card--featured {
  grid-column: 1 / -1;
}
.work-card__visual {
  position: relative;
  aspect-ratio: 16 / 7;
  background:
    radial-gradient(
      120% 140% at 80% 10%,
      color-mix(in srgb, var(--accent) 14%, transparent),
      transparent 60%
    ),
    var(--bg-2);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.work-card--featured .work-card__visual {
  aspect-ratio: 21 / 6;
}
.pglyph {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.work-card__body {
  padding: 26px 26px 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.work-card__cat {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--muted);
}
.work-card__name {
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}
.work-card__summary {
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1.55;
  max-width: 46ch;
}
.work-card__cta {
  margin-top: auto;
  padding-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14.5px;
}
.work-card__cta .arrow {
  transition: transform var(--tr);
}
.work-card:hover .work-card__cta .arrow {
  transform: translateX(5px);
}
.work-more {
  margin-top: 40px;
  display: flex;
  justify-content: center;
}

/* ---- 06 About + Why ------------------------------------------------------ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: start;
}
.about-head {
  font-size: clamp(2.2rem, 4.6vw, 3.6rem);
}
.about-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.about-body p {
  color: var(--text-2);
  font-size: 1.08rem;
}

.why-block {
  margin-top: 96px;
  padding-top: 60px;
  border-top: 1px solid var(--border);
}
.why-head {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-bottom: 40px;
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.why-item__title {
  font-size: 1.12rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.why-item__body {
  color: var(--text-2);
  font-size: 0.98rem;
  line-height: 1.55;
}

/* ---- 07 Process ---------------------------------------------------------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.process-step {
  background: var(--bg);
  padding: 34px 30px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
}
.process-step__num {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}
.process-step__title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.process-step__body {
  color: var(--text-2);
  font-size: 0.98rem;
  line-height: 1.55;
}

/* ---- 08 Contact ---------------------------------------------------------- */
.section--contact {
  border-top: 1px solid var(--border);
}
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.contact-intro p {
  color: var(--text-2);
  font-size: 1.08rem;
  margin-top: 18px;
  max-width: 40ch;
}
.contact-direct {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.contact-direct__link {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
  width: max-content;
}
.contact-direct__link:hover {
  color: var(--accent);
}
.contact-direct__loc {
  color: var(--muted);
  font-size: 0.95rem;
}

/* form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field label {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-2);
}
.field .opt {
  color: var(--muted);
  font-weight: 400;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  padding: 13px 14px;
  transition:
    border-color var(--tr-fast),
    background var(--tr-fast),
    box-shadow var(--tr-fast);
}
.field textarea {
  resize: vertical;
  min-height: 120px;
}
.field input::placeholder,
.field textarea::placeholder {
  color: var(--muted);
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--glow);
  background: var(--bg);
}
.select-wrap {
  position: relative;
}
.select-wrap::after {
  content: "";
  position: absolute;
  right: 16px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 1.6px solid var(--text-2);
  border-bottom: 1.6px solid var(--text-2);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px;
}
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form-foot {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.form-status {
  font-size: 14px;
  margin: 0;
}
.form-status.is-error {
  color: #ff8a8a;
}
.form-status.is-ok {
  color: var(--accent);
}
.contact-form.is-sending .contact-submit {
  opacity: 0.6;
  pointer-events: none;
}

/* ---- Footer -------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 72px 0 40px;
  background: var(--bg-2);
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.footer-word {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.footer-tag {
  color: var(--text-2);
  margin-top: 12px;
  max-width: 30ch;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, auto));
  gap: 40px;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col__label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 4px;
}
.footer-col a {
  color: var(--text-2);
  font-size: 15px;
  width: max-content;
  transition: color var(--tr-fast);
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-loc {
  color: var(--muted);
  font-size: 15px;
}
.footer-start {
  color: var(--text) !important;
  font-weight: 600;
}
.footer-bottom {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 28px;
  color: var(--muted);
  font-size: 13.5px;
  flex-wrap: wrap;
}

/* ---- Page heads (work / about sub-pages) --------------------------------- */
.section--page-head {
  padding: calc(var(--header-h) + 90px) 0 40px;
  border-bottom: 1px solid var(--border);
}
.page-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  max-width: 20ch;
  line-height: 1.05;
}
.page-lede {
  color: var(--text-2);
  font-size: 1.15rem;
  max-width: 56ch;
  margin-top: 22px;
}
.section--work-page {
  padding-top: 64px;
}

/* ---- CTA strip ----------------------------------------------------------- */
.section--cta-strip {
  padding: 96px 0;
  border-top: 1px solid var(--border);
}
.cta-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-strip__head {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
}

/* ---- About sub-page ------------------------------------------------------ */
.about-page-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 56px;
  align-items: start;
}
.about-page-body {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.about-page-body p {
  color: var(--text-2);
  font-size: 1.12rem;
}
.about-page-side {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--card);
  position: sticky;
  top: calc(var(--header-h) + 24px);
}
.about-fact {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.about-fact__label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.about-fact__value {
  font-size: 1.05rem;
  font-weight: 500;
}
.about-cta {
  margin-top: 8px;
  justify-content: center;
}

/* ---- Case study ---------------------------------------------------------- */
.case-head {
  padding: calc(var(--header-h) + 80px) 0 40px;
  border-bottom: 1px solid var(--border);
}
.case-back {
  color: var(--text-2);
  font-size: 14px;
  font-weight: 500;
  display: inline-block;
  margin-bottom: 30px;
}
.case-back:hover {
  color: var(--accent);
}
.case-cat {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
}
.case-title {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
}
.case-summary {
  color: var(--text-2);
  font-size: 1.2rem;
  max-width: 52ch;
  margin-top: 18px;
}
.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 34px;
}
.case-meta__item {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.case-meta__label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.case-meta__value {
  font-size: 1rem;
  color: var(--text);
  max-width: 40ch;
}
.case-meta__link {
  color: var(--accent);
}
.case-cover {
  margin-top: 48px;
}
.case-cover__inner {
  position: relative;
  aspect-ratio: 21 / 8;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  background:
    radial-gradient(
      120% 160% at 75% 0%,
      color-mix(in srgb, var(--accent) 16%, transparent),
      transparent 60%
    ),
    var(--bg-2);
}
.case-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}
.case-cols {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
}
.case-col-label .section-label {
  margin-bottom: 0;
}
.case-prose {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 62ch;
}
.case-prose p {
  color: var(--text-2);
  font-size: 1.12rem;
  line-height: 1.7;
}
.case-highlights {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 62ch;
}
.case-highlight {
  padding: 18px 0 18px 30px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 1.08rem;
  position: relative;
}
.case-highlights .case-highlight:first-child {
  border-top: 1px solid var(--border);
}
.case-highlight::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 27px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.related-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--card);
  position: relative;
  transition:
    transform var(--tr),
    border-color var(--tr),
    background var(--tr);
}
.related-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-2);
  background: var(--card-hover);
}
.related-card__label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.related-card__name {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.related-card__cat {
  color: var(--text-2);
  font-size: 0.95rem;
}
.related-card__arrow {
  position: absolute;
  top: 26px;
  right: 28px;
  color: var(--accent);
  transition: transform var(--tr);
}
.related-card:hover .related-card__arrow {
  transform: translateX(5px);
}

/* ---- Message / error pages ----------------------------------------------- */
.section--message {
  min-height: 74vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
}
.message-inner {
  max-width: 640px;
}
.message-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
}
.message-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}
.message-body {
  color: var(--text-2);
  font-size: 1.15rem;
  margin-top: 20px;
}
.message-actions {
  display: flex;
  gap: 14px;
  margin-top: 34px;
  flex-wrap: wrap;
}

/* ---- Scroll reveal ------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.7s ease,
    transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---- PJAX loading state -------------------------------------------------- */
body.pjax-loading {
  cursor: progress;
}
#pjax-root {
  transition: opacity 0.18s ease;
}
body.pjax-loading #pjax-root {
  opacity: 0.5;
}
.pjax-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: var(--accent);
  z-index: 300;
  transition:
    width 0.3s ease,
    opacity 0.3s ease;
  box-shadow: 0 0 10px var(--glow);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  :root {
    --pad-x: 28px;
    --sec-y: 100px;
  }
  .cap-item {
    grid-template-columns: 44px 1fr;
    gap: 6px 18px;
  }
  .cap-item__body {
    grid-column: 2;
  }
  .cap-item__mark {
    display: none;
  }
  .principle-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .principle:last-child:nth-child(3n + 1) {
    grid-column: auto;
  }
  .principle:last-child:nth-child(2n + 1) {
    grid-column: 1 / -1;
  }
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 32px;
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .case-cols {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 860px) {
  .site-nav {
    display: none;
  }
  .cta-start {
    display: none;
  }
  .theme-toggle {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .approach-grid,
  .about-grid,
  .contact-grid,
  .about-page-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .about-page-side {
    position: static;
  }
  .work-grid {
    grid-template-columns: 1fr;
  }
  .work-card--featured {
    grid-column: 1 / -1;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 560px) {
  :root {
    --pad-x: 20px;
    --sec-y: 76px;
    --header-h: 60px;
  }
  body {
    font-size: 15.5px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .principle-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .why-grid {
    grid-template-columns: 1fr;
  }
  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .cta-strip {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-title {
    font-size: clamp(2.3rem, 10vw, 3.2rem);
  }
  .mobile-link {
    font-size: 26px;
  }
  .case-meta {
    gap: 24px;
  }
  .cap-item {
    grid-template-columns: 32px 1fr;
    padding: 22px 4px;
  }
  .cap-item:hover {
    padding-left: 8px;
  }
}

@media (max-width: 380px) {
  :root {
    --pad-x: 16px;
  }
  .footer-cols {
    grid-template-columns: 1fr;
  }
}

/* ---- Reduced motion ------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .hero-scroll__line::after {
    display: none;
  }
}

/* ============================================================================
   Light theme + theme toggle
   Default follows the visitor's system (prefers-color-scheme). An explicit
   choice is stored on <html data-theme> and wins over the system setting.
   ========================================================================== */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f5f7f7;
    --bg-2: #ffffff;
    --bg-3: rgba(255, 255, 255, 0.6);
    --text: #0e1514;
    --text-2: #52605c;
    --muted: #79847f;
    --accent: #0fa99b;
    --accent-dim: #0c8a7f;
    --border: rgba(10, 20, 18, 0.1);
    --border-2: rgba(10, 20, 18, 0.16);
    --border-strong: rgba(10, 20, 18, 0.26);
    --card: #ffffff;
    --card-hover: #eef3f2;
    --glow: rgba(15, 169, 155, 0.2);
    --header-scrolled: rgba(247, 249, 249, 0.82);
    --overlay-bg: rgba(247, 249, 249, 0.975);
    --bg-rgb: 245, 247, 247;
  }
}
:root[data-theme="light"] {
  --bg: #f5f7f7;
  --bg-2: #ffffff;
  --bg-3: rgba(255, 255, 255, 0.6);
  --text: #0e1514;
  --text-2: #52605c;
  --muted: #79847f;
  --accent: #38b6ff;
  --accent-dim: #0c7b8a;
  --border: rgba(10, 20, 18, 0.1);
  --border-2: rgba(10, 20, 18, 0.16);
  --border-strong: rgba(10, 20, 18, 0.26);
  --card: #ffffff;
  --card-hover: #eef3f2;
  --glow: rgba(15, 169, 155, 0.2);
  --header-scrolled: rgba(247, 249, 249, 0.82);
  --overlay-bg: rgba(247, 249, 249, 0.975);
  --bg-rgb: 245, 247, 247;
}

/* logo mark */
.ll-logo {
  height: 22px;
  width: auto;
  display: block;
}

/* theme toggle button */
.theme-toggle {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-2);
  border-radius: 10px;
  color: var(--text-2);
  transition:
    color var(--tr-fast),
    border-color var(--tr-fast),
    background var(--tr-fast);
}
.theme-toggle:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--card-hover);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  display: none;
  align-items: center;
}
:root[data-theme="dark"] .theme-toggle .icon-moon {
  display: inline-flex;
}
:root[data-theme="light"] .theme-toggle .icon-sun {
  display: inline-flex;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-moon {
    display: inline-flex;
  }
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme-toggle .icon-sun {
    display: inline-flex;
  }
}

/* mobile menu theme row */
.mobile-theme {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: transparent;
  border: 1px solid var(--border-2);
  border-radius: 12px;
  padding: 14px 18px;
  color: var(--text);
  font-family: inherit;
  font-size: 17px;
  font-weight: 600;
  margin-top: 18px;
}
.mobile-theme__icons {
  display: inline-flex;
  color: var(--accent);
}
.mobile-theme .icon-sun,
.mobile-theme .icon-moon {
  display: none;
  align-items: center;
}
.mobile-theme svg {
  width: 20px;
  height: 20px;
}
:root[data-theme="dark"] .mobile-theme .icon-moon {
  display: inline-flex;
}
:root[data-theme="light"] .mobile-theme .icon-sun {
  display: inline-flex;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .mobile-theme .icon-moon {
    display: inline-flex;
  }
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .mobile-theme .icon-sun {
    display: inline-flex;
  }
}

/* footer brand line with logo */
.footer-brandline {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-logo {
  display: inline-flex;
}
.footer-logo .ll-logo {
  height: 30px;
}

/* ---- Case study responsive screenshot showcase ---- */
.case-shots {
  position: relative;
  padding-bottom: 44px;
}
.shot-browser {
  margin: 0;
  max-width: 90%;
  border: 1px solid var(--border-2);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-2);
  box-shadow: 0 40px 90px -50px rgba(0, 0, 0, 0.55);
}
.shot-browser__bar {
  height: 36px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  background: var(--card-hover);
  border-bottom: 1px solid var(--border);
}
.shot-browser__bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-strong);
}
.shot-browser__bar span:first-child {
  background: var(--accent);
}
.shot-browser__img {
  display: block;
  width: 100%;
  height: auto;
}
.shot-phone {
  position: absolute;
  right: 0;
  bottom: 0;
  margin: 0;
  width: 19%;
  min-width: 116px;
  max-width: 168px;
  border: 7px solid #0c0d10;
  border-radius: 26px;
  overflow: hidden;
  background: #0c0d10;
  box-shadow: 0 30px 70px -28px rgba(0, 0, 0, 0.6);
}
.shot-phone__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
}
@media (max-width: 680px) {
  .case-shots {
    padding-bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }
  .shot-browser {
    max-width: 100%;
  }
  .shot-phone {
    position: static;
    width: 150px;
    min-width: 0;
  }
}

/* keep the header theme toggle desktop-only; mobile uses the in-menu row */
@media (max-width: 860px) {
  .theme-toggle {
    display: none;
  }
}