/* =========================================
   UPDOOR — Stylesheet
   ========================================= */

:root {
  --black:    #060608;
  --surface:  #0E1017;
  --line:     rgba(255,255,255,0.08);
  --line-mid: rgba(255,255,255,0.12);

  --blue:     #0069FF;
  --blue-dim: rgba(0,105,255,0.12);

  --white:    #F5F6F8;
  --mid:      #7A8496;
  --dim:      #3D4455;

  --nav-h: 68px;
  --pad-x: clamp(24px, 5vw, 80px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  cursor: none;
}
@media (hover: none) { body { cursor: auto; } }
a { color: inherit; text-decoration: none; }
button { cursor: none; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }
ul { list-style: none; }

/* --- Custom cursor --- */
.cursor {
  position: fixed;
  width: 10px; height: 10px;
  background: var(--blue);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, opacity 0.2s;
  mix-blend-mode: normal;
}
.cursor.expanded {
  width: 36px; height: 36px;
  background: transparent;
  border: 1.5px solid rgba(0,105,255,0.6);
}

/* --- NAV --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background 0.4s, border-color 0.4s;
}
.nav.scrolled {
  background: rgba(6,6,8,0.9);
  border-color: var(--line);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}
.nav__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav__logo img { display: block; }
.nav__links {
  display: flex;
  gap: 32px;
  margin-left: auto;
}
.nav__links a {
  font-size: 13px;
  font-weight: 400;
  color: var(--mid);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--white); }
.nav__cta {
  font-size: 13px;
  font-weight: 500;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  transition: border-color 0.2s, background 0.2s;
}
.nav__cta span { transition: transform 0.2s; }
.nav__cta:hover { border-color: var(--blue); background: var(--blue-dim); }
.nav__cta:hover span { transform: translateX(2px); }
.nav__burger { display: none; flex-direction: column; gap: 6px; margin-left: auto; padding: 4px; }
.nav__burger span { display: block; width: 22px; height: 1.5px; background: var(--mid); transition: all 0.3s; }

/* --- HERO --- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  opacity: 0.4;
}
.hero__inner {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--pad-x);
  align-items: center;
  gap: 60px;
}
.hero__left {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 60px;
  padding: 80px 0;
}
.hero__eyebrow {
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.hero__h1 {
  font-family: 'Sora', sans-serif;
  font-size: clamp(54px, 6.5vw, 96px);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--white);
}
.hero__h1 em {
  font-style: italic;
  font-weight: 700;
  color: var(--blue);
}
.hero__bottom {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 420px;
}
.hero__desc {
  font-size: 15px;
  color: var(--mid);
  line-height: 1.75;
  font-weight: 300;
}
.hero__link {
  font-size: 13px;
  font-weight: 500;
  color: var(--white);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--line-mid);
  padding-bottom: 2px;
  width: fit-content;
  transition: border-color 0.2s, gap 0.2s;
}
.hero__link:hover { border-color: var(--blue); gap: 14px; }

/* Hero visual */
.hero__right {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero__visual {
  position: relative;
  width: 420px;
  height: 420px;
}
.visual__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--line);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation: spin linear infinite;
}
.visual__ring--1 {
  width: 100%; height: 100%;
  border-color: rgba(0,105,255,0.15);
  animation-duration: 20s;
}
.visual__ring--2 {
  width: 68%; height: 68%;
  border-color: rgba(0,105,255,0.1);
  animation-duration: 14s;
  animation-direction: reverse;
}
.visual__ring--3 {
  width: 38%; height: 38%;
  border-color: rgba(0,105,255,0.08);
  animation-duration: 9s;
}
@keyframes spin { from { transform: translate(-50%,-50%) rotate(0deg); } to { transform: translate(-50%,-50%) rotate(360deg); } }

.visual__ring--1::after,
.visual__ring--2::after,
.visual__ring--3::after {
  content: '';
  position: absolute;
  width: 6px; height: 6px;
  background: var(--blue);
  border-radius: 50%;
  top: -3px; left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 10px var(--blue);
}

.visual__core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  z-index: 2;
}
.visual__core span {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
}
.visual__core span:nth-child(2) { color: var(--mid); }
.visual__orb {
  position: absolute;
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(0,105,255,0.3) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  filter: blur(20px);
  animation: pulse-orb 4s ease-in-out infinite;
}
@keyframes pulse-orb {
  0%, 100% { opacity: 0.6; transform: translate(-50%,-50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%,-50%) scale(1.2); }
}

/* Hero ticker */
.hero__ticker {
  border-top: 1px solid var(--line);
  overflow: hidden;
  padding: 18px 0;
  white-space: nowrap;
}
.ticker__track {
  display: inline-flex;
  gap: 32px;
  animation: ticker 28s linear infinite;
}
.ticker__track span {
  font-size: 12px;
  color: var(--dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 400;
}
.ticker__track .sep { color: var(--blue); }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* --- PURPOSE --- */
.purpose {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.purpose__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 100px var(--pad-x);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 60px;
  align-items: start;
}
.purpose__tag {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
  padding-top: 6px;
}
.purpose__right blockquote {
  font-family: 'Sora', sans-serif;
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 32px;
  max-width: 760px;
}
.purpose__right p {
  font-size: 15px;
  color: var(--mid);
  line-height: 1.8;
  max-width: 620px;
  font-weight: 300;
}
.purpose__right p strong { color: var(--white); font-weight: 500; }

/* --- SERVICES --- */
.services {
  max-width: 1400px;
  margin: 0 auto;
}
.service {
  padding: 80px var(--pad-x);
  border-bottom: 1px solid var(--line);
}
.service--alt { background: rgba(255,255,255,0.01); }
.service-divider { display: none; }

.service__header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
  align-items: end;
}
.service__meta { display: flex; flex-direction: column; gap: 16px; }
.service__num {
  font-size: 11px;
  color: var(--blue);
  letter-spacing: 0.15em;
  font-weight: 500;
}
.service__title {
  font-family: 'Sora', sans-serif;
  font-size: clamp(36px, 4vw, 58px);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--white);
}
.service__desc {
  font-size: 15px;
  color: var(--mid);
  line-height: 1.75;
  font-weight: 300;
  align-self: end;
  padding-bottom: 4px;
}

/* Service items grid */
.service__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-left: 1px solid var(--line);
}
.service__grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.s-item {
  padding: 28px 28px 28px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 0.25s;
  position: relative;
}
.s-item::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--blue);
  transition: width 0.3s ease;
}
.s-item:hover { background: rgba(0,105,255,0.04); }
.s-item:hover::after { width: 100%; }

.s-item h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.s-item p {
  font-size: 13px;
  color: var(--mid);
  line-height: 1.65;
  font-weight: 300;
}
.s-item--featured {
  padding: 36px;
}
.s-item--featured h4 { font-size: 16px; }
.s-item--featured p { font-size: 14px; }

/* LLM hero items */
.service__grid--llm {
  grid-template-columns: 1fr 1fr 1fr;
}
.service__grid--llm .s-item--hero {
  grid-column: span 1;
  background: linear-gradient(135deg, rgba(0,105,255,0.10) 0%, rgba(0,105,255,0.04) 100%);
  border: 1px solid rgba(0,105,255,0.28);
  border-radius: 4px;
  padding: 36px;
  position: relative;
  overflow: hidden;
}
.service__grid--llm .s-item--hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--blue);
  opacity: 0.7;
}
.s-item__badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  background: rgba(0,105,255,0.12);
  border: 1px solid rgba(0,105,255,0.25);
  border-radius: 100px;
  padding: 3px 10px;
  margin-bottom: 14px;
}
.service__grid--llm .s-item--hero h4 { font-size: 17px; margin-bottom: 12px; }
.service__grid--llm .s-item--hero p  { font-size: 14px; color: rgba(245,246,248,0.75); }

@media (max-width: 860px) {
  .service__grid--llm { grid-template-columns: 1fr 1fr; }
  .service__grid--llm .s-item--hero { grid-column: span 1; }
}
@media (max-width: 600px) {
  .service__grid--llm { grid-template-columns: 1fr; }
}

/* 6-item grid: last row has bottom border on both sides */
.service__grid .s-item:nth-child(3n) { border-right: none; }

/* --- BLOG SECTION --- */
.blog-section {
  background: var(--surface);
  padding: 120px var(--pad-x);
  border-top: 1px solid var(--line);
}
.blog-section__inner { max-width: 1200px; margin: 0 auto; }
.blog-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 64px;
}
.blog-section__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  display: block;
  margin-bottom: 16px;
}
.blog-section__h2 {
  font-family: 'Sora', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.blog-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 40px 36px;
  border: 1px solid var(--line);
  background: var(--black);
  transition: border-color 0.2s, background 0.2s;
  cursor: none;
}
.blog-card:hover {
  border-color: rgba(0,105,255,0.35);
  background: rgba(0,105,255,0.04);
}
.blog-card__cat {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
}
.blog-card__title {
  font-family: 'Sora', sans-serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--white);
  flex: 1;
}
.blog-card__excerpt {
  font-size: 14px;
  line-height: 1.65;
  color: var(--mid);
  font-weight: 300;
}
.blog-card__read {
  font-size: 13px;
  font-weight: 500;
  color: var(--blue);
  margin-top: 8px;
}
@media (max-width: 860px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-section__head { flex-direction: column; align-items: flex-start; }
}

/* --- CONTACT --- */
.contact {
  background: #F2F4F7;
  color: #0A0C10;
}
.contact__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 100px var(--pad-x);
}
.contact__top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: end;
  margin-bottom: 64px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}
.contact__h2 {
  font-family: 'Sora', sans-serif;
  font-size: clamp(38px, 5vw, 72px);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: #0A0C10;
}
.contact__top-right {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 4px;
}
.contact__top-right p {
  font-size: 15px;
  color: #5A6070;
  line-height: 1.75;
  font-weight: 300;
}
.contact__links {
  display: flex;
  gap: 28px;
}
.contact__links a {
  font-size: 14px;
  font-weight: 500;
  color: #0A0C10;
  border-bottom: 1px solid rgba(0,0,0,0.2);
  padding-bottom: 2px;
  transition: border-color 0.2s, color 0.2s;
}
.contact__links a:hover { color: var(--blue); border-color: var(--blue); }

/* Form */
.contact__form {
  display: flex;
  flex-direction: column;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid rgba(0,0,0,0.1);
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 0;
  border-right: 1px solid rgba(0,0,0,0.1);
  padding-right: 40px;
}
.field:last-child { border-right: none; padding-right: 0; padding-left: 40px; }
.field--full {
  border-top: 1px solid rgba(0,0,0,0.1);
  border-right: none;
  padding: 24px 0;
}
.field label {
  font-size: 11px;
  font-weight: 600;
  color: #8A90A0;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.field .opt { font-weight: 300; letter-spacing: 0; text-transform: none; font-size: 10px; }
.field input,
.field textarea {
  background: none;
  border: none;
  border-bottom: 1px solid rgba(0,0,0,0.15);
  padding: 10px 0;
  font-size: 15px;
  color: #0A0C10;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
.field input::placeholder,
.field textarea::placeholder { color: #B0B6C4; }
.field input:focus,
.field textarea:focus { border-color: var(--blue); }
.field input.error,
.field textarea.error,
.field select.error { border-color: #EF4444; }
.field textarea { resize: none; height: 90px; }
.field-error {
  font-size: 11px;
  color: #EF4444;
  min-height: 14px;
}

.select-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.select-wrap select {
  background: none;
  border: none;
  border-bottom: 1px solid rgba(0,0,0,0.15);
  padding: 10px 0;
  font-size: 15px;
  color: #0A0C10;
  outline: none;
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color 0.2s;
}
.select-wrap select option { background: #fff; color: #0A0C10; }
.select-wrap svg {
  position: absolute; right: 0;
  color: #8A90A0;
  pointer-events: none;
}
.select-wrap select:focus { border-color: var(--blue); }

.form-footer {
  border-top: 1px solid rgba(0,0,0,0.1);
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.check-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13px;
  color: #5A6070;
  cursor: pointer;
  font-weight: 300;
}
.check-label input { display: none; }
.check-box {
  width: 16px; height: 16px;
  min-width: 16px;
  border: 1px solid rgba(0,0,0,0.25);
  border-radius: 3px;
  margin-top: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, background 0.2s;
  background: #fff;
}
.check-label input:checked + .check-box {
  background: var(--blue);
  border-color: var(--blue);
}
.check-label input:checked + .check-box::after {
  content: '';
  width: 4px; height: 7px;
  border: 1.5px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
}

.submit-btn {
  margin-top: 32px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #0A0C10;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 16px 32px;
  border-radius: 4px;
  letter-spacing: 0.01em;
  transition: background 0.2s, transform 0.2s;
  align-self: flex-start;
  cursor: none;
}
.submit-btn:hover { background: var(--blue); transform: translateY(-1px); }
.submit-btn:disabled { opacity: 0.5; }
.btn-icon { font-size: 16px; transition: transform 0.2s; }
.submit-btn:hover .btn-icon { transform: translateX(4px); }

.form-success {
  display: none;
  align-items: center;
  gap: 20px;
  padding: 40px 0;
}
.form-success.show { display: flex; }
.success-mark {
  width: 44px; height: 44px;
  background: #0A0C10;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  color: #fff;
}
.form-success strong { font-size: 16px; font-weight: 600; color: #0A0C10; }
.form-success p { font-size: 13px; color: #5A6070; margin-top: 4px; }

/* --- FOOTER --- */
.footer {
  background: #E8EBF0;
  border-top: 1px solid rgba(0,0,0,0.08);
}
.footer__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 36px var(--pad-x);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer__tagline {
  font-size: 12px;
  color: #8A90A0;
  margin-left: 16px;
}
.footer__right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 28px;
}
.footer__right a, .footer__right span {
  font-size: 12px;
  color: #8A90A0;
  transition: color 0.2s;
}
.footer__right a:hover { color: #0A0C10; }

/* --- MOBILE NAV --- */
.nav.menu-open .nav__links {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: var(--black);
  border-bottom: 1px solid var(--line);
  padding: 28px var(--pad-x);
  gap: 24px;
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
  .hero__visual { width: 320px; height: 320px; }
  .service__grid { grid-template-columns: repeat(2, 1fr); }
  .service__grid .s-item:nth-child(3n) { border-right: 1px solid var(--line); }
  .service__grid .s-item:nth-child(2n) { border-right: none; }
  .service__grid--3 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__burger { display: flex; }

  .hero__inner { grid-template-columns: 1fr; }
  .hero__right { display: none; }
  .hero__left { padding: 60px 0 40px; gap: 40px; }

  .purpose__inner { grid-template-columns: 1fr; gap: 24px; }

  .service__header { grid-template-columns: 1fr; gap: 24px; }
  .service__grid { grid-template-columns: 1fr 1fr; }
  .service__grid--3 { grid-template-columns: 1fr 1fr; }

  .contact__top { grid-template-columns: 1fr; gap: 32px; }
  .field-row { grid-template-columns: 1fr; }
  .field { border-right: none; padding-right: 0; }
  .field:last-child { padding-left: 0; border-top: 1px solid var(--line); }
}

@media (max-width: 560px) {
  .service__grid { grid-template-columns: 1fr; }
  .service__grid--3 { grid-template-columns: 1fr; }
  .service__grid .s-item { border-right: none; }
  .footer__right { flex-direction: column; align-items: flex-start; gap: 8px; margin-left: 0; margin-top: 12px; }
  .footer__tagline { display: none; }
  .submit-btn { width: 100%; justify-content: center; }
}

/* --- ANIMATIONS --- */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up-d1 { transition-delay: 0.1s; }
.fade-up-d2 { transition-delay: 0.2s; }
.fade-up-d3 { transition-delay: 0.3s; }