/* ============================================================
   Byte Burst Labs — style.css
   Minimal editorial design system
   Palette: warm paper / near-black ink / burst orange accent
   ============================================================ */

:root {
  --bg: #f6f4ef;
  --ink: #111114;
  --ink-soft: rgba(17, 17, 20, 0.64);
  --ink-faint: rgba(17, 17, 20, 0.4);
  --line: rgba(17, 17, 20, 0.14);
  --accent: #ff4d00;

  --dark-bg: #111114;
  --dark-ink: #f6f4ef;
  --dark-soft: rgba(246, 244, 239, 0.62);
  --dark-line: rgba(246, 244, 239, 0.16);

  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-pad: clamp(4.5rem, 10vw, 8.5rem);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset & base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: var(--accent);
  color: #fff;
}

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

body.nav-open {
  overflow: hidden;
}

/* ---------- Utilities ---------- */

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.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;
}

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: 0.6em;
}

.eyebrow::before {
  content: "\2726"; /* ✦ */
  color: var(--accent);
  font-size: 0.9em;
}

.section {
  padding-block: var(--section-pad);
}

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-top: 1.1rem;
}

.section-sub {
  margin-top: 1.25rem;
  color: var(--ink-soft);
  max-width: 38rem;
}

/* ---------- Buttons & links ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.95em 1.7em;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: background-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.btn .btn-arrow {
  transition: transform 0.3s var(--ease);
}

.btn:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

.btn:hover .btn-arrow {
  transform: translate(3px, -3px);
}

.btn-light {
  background: var(--dark-ink);
  color: var(--ink);
}

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

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 500;
  padding-block: 0.4em;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.link-arrow::after {
  content: "\2192"; /* → */
  transition: transform 0.3s var(--ease);
}

.link-arrow:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(246, 244, 239, 0.88);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.logo-mark {
  width: 1.05em;
  height: 1.05em;
  color: var(--accent);
  transition: transform 0.5s var(--ease);
}

.logo:hover .logo-mark {
  transform: rotate(90deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.4rem, 3vw, 2.4rem);
}

.site-nav a:not(.btn) {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.25s var(--ease);
}

.site-nav a:not(.btn):hover {
  color: var(--ink);
}

.site-nav a[aria-current="page"] {
  color: var(--ink);
  position: relative;
}

.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.45em;
  height: 2px;
  background: var(--accent);
}

.site-nav .btn {
  padding: 0.65em 1.3em;
  font-size: 0.88rem;
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 2;
  width: 2.6rem;
  height: 2.6rem;
  align-items: center;
  justify-content: center;
}

.nav-toggle-box {
  display: flex;
  flex-direction: column;
  gap: 7px;
  width: 24px;
}

.nav-toggle-box span {
  height: 2px;
  background: var(--ink);
  transition: transform 0.35s var(--ease);
}

body.nav-open .nav-toggle-box span:first-child {
  transform: translateY(4.5px) rotate(45deg);
}

body.nav-open .nav-toggle-box span:last-child {
  transform: translateY(-4.5px) rotate(-45deg);
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1.6rem;
    padding: var(--gutter);
    background: var(--bg);
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.35s var(--ease), visibility 0s 0.35s;
  }

  body.nav-open .site-nav {
    visibility: visible;
    opacity: 1;
    transition: opacity 0.35s var(--ease);
  }

  .site-nav a:not(.btn) {
    font-size: 2.2rem;
    letter-spacing: -0.02em;
    color: var(--ink);
  }

  .site-nav a[aria-current="page"]::after {
    bottom: -0.2em;
  }

  .site-nav .btn {
    margin-top: 0.8rem;
    font-size: 1.05rem;
    padding: 0.9em 1.7em;
  }
}

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

.hero {
  position: relative;
  padding-top: clamp(9rem, 20vh, 13rem);
  padding-bottom: clamp(4rem, 9vw, 7rem);
  overflow: hidden;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 10.5vw, 8.2rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin-top: 1.4rem;
  max-width: 12em;
}

.hero-title em {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  margin-top: 2rem;
  max-width: 34rem;
  font-size: 1.15rem;
  color: var(--ink-soft);
}

.hero-actions {
  margin-top: 2.6rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.6rem;
}

.hero-mark {
  position: absolute;
  top: clamp(5rem, 12vh, 8rem);
  right: calc(-1 * clamp(2rem, 8vw, 6rem));
  width: clamp(200px, 32vw, 460px);
  height: auto;
  color: var(--ink);
  opacity: 0.07;
  pointer-events: none;
  animation: spin-slow 80s linear infinite;
}

@keyframes spin-slow {
  to {
    transform: rotate(360deg);
  }
}

/* Page hero (inner pages) */

.page-hero {
  padding-top: clamp(8.5rem, 18vh, 12rem);
  padding-bottom: clamp(3rem, 7vw, 5.5rem);
}

.page-hero .hero-title {
  font-size: clamp(2.8rem, 8vw, 6rem);
}

/* ---------- Marquee ---------- */

.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: 1.1rem;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 30s linear infinite;
}

.marquee-group {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  padding-right: 2.2rem;
  white-space: nowrap;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.marquee-group .star {
  color: var(--accent);
  font-size: 0.85em;
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- Statement ---------- */

.statement {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.5rem);
  font-weight: 500;
  line-height: 1.28;
  letter-spacing: -0.015em;
  max-width: 52rem;
  margin-top: 1.4rem;
}

.statement .accent {
  color: var(--accent);
}

/* ---------- Services ---------- */

.service {
  display: grid;
  grid-template-columns: 4.5rem 1.1fr 1fr;
  gap: clamp(1.2rem, 3vw, 3rem);
  padding-block: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
}

.service:last-child {
  border-bottom: 1px solid var(--line);
}

.service-num {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-faint);
  padding-top: 0.5rem;
  transition: color 0.3s var(--ease);
}

.service-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.02em;
  transition: transform 0.4s var(--ease);
}

.service-body p {
  color: var(--ink-soft);
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45em 0;
  margin-top: 1.2rem;
  font-size: 0.85rem;
  color: var(--ink-faint);
}

.service-tags span:not(:last-child)::after {
  content: "\00B7"; /* · */
  margin-inline: 0.7em;
  color: var(--accent);
}

.service:hover .service-num {
  color: var(--accent);
}

.service:hover .service-title {
  transform: translateX(6px);
}

@media (max-width: 760px) {
  .service {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }

  .service-num {
    padding-top: 0;
  }
}

/* ---------- Hairline grid cards ---------- */

.grid-lines {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.grid-lines > * {
  background: var(--bg);
  padding: clamp(1.6rem, 3vw, 2.4rem);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 980px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 700px) {
  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.card-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 500;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--ink-faint);
  transition: color 0.35s var(--ease), -webkit-text-stroke-color 0.35s var(--ease);
}

.grid-lines > *:hover .card-num {
  color: var(--accent);
  -webkit-text-stroke-color: var(--accent);
}

.card-word {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--accent);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-top: 1.4rem;
}

.card-text {
  margin-top: 0.7rem;
  font-size: 0.97rem;
  color: var(--ink-soft);
}

.card-kicker {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 1.4rem;
}

/* ---------- Sector pills ---------- */

.pill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.pill {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.65em 1.35em;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease),
    border-color 0.3s var(--ease);
}

.pill:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.sector-note {
  margin-top: 2rem;
  color: var(--ink-faint);
  font-size: 0.95rem;
  max-width: 34rem;
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--dark-bg);
  color: var(--dark-ink);
  padding-block: clamp(5rem, 12vw, 9rem);
}

.cta-band .eyebrow {
  color: var(--dark-soft);
}

.cta-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6.5vw, 5rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin-top: 1.2rem;
  max-width: 14em;
}

.cta-title em {
  font-style: normal;
  color: var(--accent);
}

.cta-sub {
  margin-top: 1.4rem;
  color: var(--dark-soft);
  max-width: 32rem;
}

.cta-actions {
  margin-top: 2.6rem;
}

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

.site-footer {
  background: var(--dark-bg);
  color: var(--dark-ink);
  border-top: 1px solid var(--dark-line);
  padding-block: clamp(3rem, 7vw, 5rem) 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}

@media (max-width: 820px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand .logo {
  color: var(--dark-ink);
}

.footer-blurb {
  margin-top: 1.2rem;
  max-width: 24rem;
  font-size: 0.95rem;
  color: var(--dark-soft);
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dark-soft);
  margin-bottom: 1.1rem;
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.footer-col a {
  font-size: 0.97rem;
  color: var(--dark-ink);
  transition: color 0.25s var(--ease);
}

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

.footer-col address {
  font-style: normal;
  font-size: 0.97rem;
  line-height: 1.7;
  color: var(--dark-ink);
}

.footer-legal {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: 1.4rem;
  border-top: 1px solid var(--dark-line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 2rem;
  font-size: 0.8rem;
  color: var(--dark-soft);
}

/* ---------- Contact page ---------- */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(2.5rem, 6vw, 5.5rem);
  align-items: start;
}

@media (max-width: 860px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

.contact-block + .contact-block {
  margin-top: 2.6rem;
}

.contact-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.7rem;
}

.contact-email {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  border-bottom: 2px solid var(--line);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.contact-email:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.contact-address {
  font-style: normal;
  line-height: 1.8;
  color: var(--ink-soft);
}

.contact-note {
  color: var(--ink-faint);
  font-size: 0.9rem;
  margin-top: 0.8rem;
}

/* Form */

.contact-form {
  display: grid;
  gap: 1.9rem;
  border: 1px solid var(--line);
  padding: clamp(1.6rem, 4vw, 2.6rem);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.9rem;
}

@media (max-width: 560px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.field label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.5rem;
}

.field input,
.field textarea {
  width: 100%;
  font: inherit;
  font-size: 1.02rem;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 0.55em 0;
  border-radius: 0;
  transition: border-color 0.3s var(--ease);
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--ink-faint);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.field textarea {
  resize: vertical;
  min-height: 7.5rem;
}

.form-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.4rem;
}

.form-hint {
  font-size: 0.85rem;
  color: var(--ink-faint);
  max-width: 20rem;
}

/* Registration details */

.reg-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem clamp(2rem, 5vw, 4rem);
  border-top: 1px solid var(--line);
  padding-top: 2.4rem;
  margin-top: 1.6rem;
}

@media (max-width: 700px) {
  .reg-grid {
    grid-template-columns: 1fr;
  }
}

.reg-grid dt {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.45rem;
}

.reg-grid dd {
  color: var(--ink-soft);
  line-height: 1.7;
}

.reg-grid dd a {
  border-bottom: 1px solid var(--line);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.reg-grid dd a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- Reveal animations ---------- */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: var(--reveal-delay, 0s);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Reduced motion ---------- */

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .marquee-track {
    animation: none;
  }

  .hero-mark {
    animation: none;
  }
}