/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f4f1;
  --color-dark: #0b0b0c;
  --color-dark-2: #17171a;
  --color-text: #16161a;
  --color-text-light: #75757c;
  --color-line: #e7e5e1;
  --color-accent: #ff4d2e;
  --color-accent-dim: #ffe4dc;
  --container: 1180px;
  --radius: 14px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.section-head p {
  margin-top: 14px;
  color: var(--color-text-light);
  font-size: 16px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 28px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 15px;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease, box-shadow .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 10px 24px -8px rgba(255, 77, 46, 0.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 28px -8px rgba(255, 77, 46, 0.65); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.35);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.btn-dark {
  background: var(--color-dark);
  color: #fff;
}
.btn-dark:hover { background: var(--color-accent); transform: translateY(-2px); }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: background 0.3s ease, padding 0.3s ease, box-shadow .3s ease;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
  padding: 12px 0;
  box-shadow: 0 1px 0 var(--color-line);
}
.logo {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: #fff;
  transition: color .3s ease;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.logo span { color: var(--color-accent); }
.site-header.scrolled .logo { color: var(--color-dark); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-menu a {
  font-size: 15px;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  transition: color .3s ease;
  position: relative;
}
.site-header.scrolled .nav-menu a { color: var(--color-text); }
.nav-menu a:hover { color: var(--color-accent); }

.header-actions { display: flex; align-items: center; gap: 20px; }
.header-actions .btn-primary { padding: 12px 22px; font-size: 14px; }

.nav-toggle {
  display: none;
  width: 30px; height: 22px;
  position: relative;
  z-index: 1100;
}
.nav-toggle span {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: #fff;
  transition: all .3s ease;
}
.site-header.scrolled .nav-toggle span { background: var(--color-dark); }
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 10px; }
.nav-toggle span:nth-child(3) { top: 20px; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(10px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-10px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(255,77,46,0.35), transparent 60%),
    radial-gradient(900px 500px at 0% 100%, rgba(255,255,255,0.06), transparent 60%),
    linear-gradient(160deg, #0b0b0c 0%, #17171a 55%, #0b0b0c 100%);
  color: #fff;
  overflow: hidden;
  padding-top: 120px;
  padding-bottom: 80px;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.6), transparent 75%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: 100px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-badge b { color: var(--color-accent); }
.hero h1 {
  font-size: clamp(36px, 5.4vw, 64px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.18;
}
.hero h1 em {
  font-style: normal;
  color: var(--color-accent);
}
.hero p.lead {
  margin-top: 24px;
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  max-width: 520px;
}
.hero-actions {
  margin-top: 40px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-visual {
  position: relative;
  height: 460px;
}
.hero-card {
  position: absolute;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.08);
}
.hero-card.card-1 {
  width: 62%; height: 68%;
  top: 0; right: 0;
  background: linear-gradient(135deg, #ff8a5c, #ff4d2e 60%, #b8250e);
}
.hero-card.card-2 {
  width: 52%; height: 46%;
  bottom: 0; left: 0;
  background: linear-gradient(135deg, #2a2a2e, #0b0b0c 70%);
  border-color: rgba(255,255,255,0.12);
}
.hero-card .tag {
  position: absolute;
  left: 18px; bottom: 18px;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: rgba(0,0,0,0.35);
  padding: 6px 12px;
  border-radius: 100px;
  backdrop-filter: blur(4px);
}
.hero-card.card-2 .tag { background: rgba(255,77,46,0.9); }

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.1em;
  z-index: 2;
}
.scroll-cue .line {
  width: 1px; height: 36px;
  background: linear-gradient(rgba(255,255,255,0.7), transparent);
  animation: scrollDown 1.8s ease infinite;
}
@keyframes scrollDown {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  50.01% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===== Stats ===== */
.stats {
  background: var(--color-dark);
  color: #fff;
  padding: 56px 0;
}
.stats .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item { text-align: center; border-left: 1px solid rgba(255,255,255,0.1); padding: 0 12px;}
.stat-item:first-child { border-left: none; }
.stat-item .num {
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #fff;
}
.stat-item .num span { color: var(--color-accent); }
.stat-item .label {
  margin-top: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
}

/* ===== Services ===== */
.services { padding: 120px 0; background: var(--color-bg); }
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: transform .3s ease, box-shadow .3s ease, background .3s ease;
}
.service-card:hover {
  transform: translateY(-6px);
  background: #fff;
  box-shadow: 0 24px 40px -20px rgba(0,0,0,0.15);
}
.service-num {
  font-size: 13px;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}
.service-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--color-dark);
  color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin: 18px 0 20px;
}
.service-card h3 {
  font-size: 19px;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.service-card p {
  font-size: 14.5px;
  color: var(--color-text-light);
}

/* ===== Process ===== */
.process { padding: 120px 0; background: var(--color-dark); color: #fff; }
.process .section-head p { color: rgba(255,255,255,0.55); }
.process .eyebrow { color: var(--color-accent); }
.process-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}
.process-track::before {
  content: "";
  position: absolute;
  top: 27px; left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.15);
  z-index: 0;
}
.process-step { position: relative; z-index: 1; }
.process-step .dot {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--color-dark-2);
  border: 1px solid rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 22px;
  transition: all .3s ease;
}
.process-step:hover .dot {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: scale(1.08);
}
.process-step h4 { font-size: 16.5px; font-weight: 800; margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: rgba(255,255,255,0.5); }

/* ===== Portfolio ===== */
.portfolio { padding: 120px 0; }
.portfolio-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-tabs button {
  padding: 10px 18px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-light);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  transition: all .25s ease;
}
.filter-tabs button.active,
.filter-tabs button:hover {
  background: var(--color-dark);
  color: #fff;
  border-color: var(--color-dark);
}
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.portfolio-item {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/5;
  cursor: pointer;
  transition: opacity .3s ease, transform .3s ease;
}
.portfolio-item.hidden { display: none; }
.portfolio-thumb {
  position: absolute; inset: 0;
  transition: transform .5s ease;
}
.portfolio-item:hover .portfolio-thumb { transform: scale(1.06); }
.portfolio-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.82) 0%, rgba(0,0,0,0.1) 45%, transparent 70%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 22px;
  color: #fff;
}
.portfolio-overlay .cat {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.portfolio-overlay h4 { font-size: 18px; font-weight: 800; }

/* thumb color variants */
.thumb-1 { background: linear-gradient(150deg,#ff8a5c,#ff4d2e 55%,#7a1a08); }
.thumb-2 { background: linear-gradient(150deg,#2b2b30,#0b0b0c 60%); }
.thumb-3 { background: linear-gradient(150deg,#ffd9a0,#ff8a5c 60%,#ff4d2e); }
.thumb-4 { background: linear-gradient(150deg,#3d3d42,#17171a 60%); }
.thumb-5 { background: linear-gradient(150deg,#ffb199,#ff4d2e 55%,#5c1206); }
.thumb-6 { background: linear-gradient(150deg,#57575d,#0b0b0c 65%); }

/* ===== About / Philosophy ===== */
.about { padding: 120px 0; background: var(--color-bg-alt); }
.about .container {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.about-visual {
  aspect-ratio: 1/1.05;
  border-radius: 24px;
  background: linear-gradient(160deg, var(--color-dark), #2a2a2e 60%, var(--color-accent) 130%);
  position: relative;
  overflow: hidden;
}
.about-visual::before {
  content: "MOVEIN";
  position: absolute;
  bottom: -30px; left: -10px;
  font-size: 110px;
  font-weight: 900;
  color: rgba(255,255,255,0.06);
  letter-spacing: -0.04em;
  white-space: nowrap;
}
.about-quote {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -0.01em;
  margin-bottom: 28px;
}
.about-quote span { color: var(--color-accent); }
.about-copy { color: var(--color-text-light); font-size: 15.5px; margin-bottom: 34px; max-width: 560px; }
.about-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.about-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; }
.about-list li::before {
  content: "";
  flex: none;
  width: 8px; height: 8px;
  margin-top: 6px;
  border-radius: 2px;
  background: var(--color-accent);
}
.about-list b { display: block; font-size: 15px; margin-bottom: 2px; }

/* ===== Clients ===== */
.clients { padding: 90px 0; overflow: hidden; }
.clients .section-head { margin-bottom: 40px; }
.marquee {
  display: flex;
  width: max-content;
  animation: marquee 28s linear infinite;
}
.marquee-track { display: flex; gap: 16px; padding-right: 16px; }
.client-chip {
  flex: none;
  padding: 18px 34px;
  border: 1px solid var(--color-line);
  border-radius: 100px;
  font-weight: 800;
  font-size: 16px;
  color: var(--color-text-light);
  background: var(--color-bg-alt);
  letter-spacing: -0.01em;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== CTA Banner ===== */
.cta-banner {
  margin: 0 24px;
  max-width: calc(var(--container) - 48px);
  margin: 0 auto;
  border-radius: 28px;
  background: linear-gradient(120deg, #0b0b0c 0%, #1c1c20 60%, #ff4d2e 160%);
  color: #fff;
  padding: 72px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-banner h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 900;
  letter-spacing: -0.02em;
  max-width: 560px;
}
.cta-banner p { margin-top: 12px; color: rgba(255,255,255,0.6); font-size: 15px; }

/* ===== Contact ===== */
.contact { padding: 120px 0; }
.contact .container {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}
.contact-info-list { margin-top: 30px; display: flex; flex-direction: column; gap: 22px; }
.contact-info-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-item .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--color-dark);
  color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  flex: none;
  font-size: 18px;
}
.contact-info-item b { display: block; font-size: 14px; color: var(--color-text-light); margin-bottom: 2px; }
.contact-info-item span { font-size: 16px; font-weight: 700; }

.contact-form {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: 20px;
  padding: 36px;
  display: grid;
  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: 13px; font-weight: 700; color: var(--color-text-light); }
.field input, .field select, .field textarea {
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--color-line);
  background: #fff;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--color-text);
  transition: border-color .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.field textarea { resize: vertical; min-height: 110px; }
.contact-form .btn { width: 100%; margin-top: 6px; }
.form-note { font-size: 12.5px; color: var(--color-text-light); text-align: center; }

/* ===== Footer ===== */
.site-footer { background: var(--color-dark); color: rgba(255,255,255,0.6); padding: 64px 0 32px; }
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { max-width: 320px; font-size: 14px; }
.footer-links { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h5 { color: #fff; font-size: 14px; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; }
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
}
.footer-social { display: flex; gap: 14px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center;
}
.footer-social a:hover { background: var(--color-accent); border-color: var(--color-accent); }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { height: 320px; margin-top: 20px; }
  .stats .container { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
  .stat-item:nth-child(3) { border-left: none; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .process-track { grid-template-columns: repeat(3, 1fr); row-gap: 30px; }
  .process-track::before { display: none; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .about .container, .contact .container { grid-template-columns: 1fr; }
  .about-visual { height: 280px; }
}

@media (max-width: 720px) {
  .nav-menu {
    position: fixed;
    top: 0; right: -100%;
    width: 78%; max-width: 320px; height: 100vh;
    background: #fff;
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    transition: right .35s ease;
    box-shadow: -10px 0 40px rgba(0,0,0,0.15);
  }
  .nav-open .nav-menu { right: 0; }
  .nav-menu a { color: var(--color-text); font-size: 18px; }
  .header-actions .btn-primary { display: none; }
  .nav-toggle { display: block; }
  .service-grid { grid-template-columns: 1fr; }
  .process-track { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-banner { padding: 48px 28px; }
  .footer-links { gap: 32px; }
}