@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable.min.css');

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f7f8fa;
  --bg-card: rgba(0,0,0,0.02);
  --text-primary: #1a1a2e;
  --text-secondary: rgba(26,26,46,0.6);
  --text-dim: rgba(26,26,46,0.35);
  --navy: #1b2a4a;
  --navy-light: #2d4373;
  --navy-dark: #0f1a30;
  --accent: #1b2a4a;
  --accent-glow: rgba(27,42,74,0.15);
  --gradient-1: linear-gradient(135deg, #1b2a4a, #3a5a8c);
  --gradient-2: linear-gradient(135deg, #1b2a4a, #4a6fa5);
  --glass: rgba(27,42,74,0.04);
  --glass-border: rgba(27,42,74,0.1);
  --radius: 20px;
  --radius-sm: 12px;
  --transition: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(27,42,74,0.15) transparent;
}

body {
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── CURSOR GLOW ─── */
.cursor-glow {
  position: fixed;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27,42,74,0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%,-50%);
  transition: transform 0.1s;
}

/* ─── LOADER ─── */
.loader {
  position: fixed; inset:0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 24px;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
.loader.hide { opacity:0; visibility: hidden; }
.loader-bar {
  width: 200px; height: 2px;
  background: rgba(27,42,74,0.1);
  border-radius: 4px; overflow: hidden;
}
.loader-bar::after {
  content:''; display:block;
  width: 0%; height:100%;
  background: var(--gradient-1);
  animation: load 1.8s var(--transition) forwards;
}
@keyframes load { to { width:100% } }
.loader-text {
  font-size: 12px; letter-spacing: 6px; text-transform: uppercase;
  color: var(--navy);
  font-weight: 600;
}

/* ─── NAV ─── */
nav {
  position: fixed; top:0; left:0; right:0;
  z-index: 100;
  padding: 20px 48px;
  display: flex; justify-content: space-between; align-items: center;
  transition: all 0.5s ease;
  backdrop-filter: blur(0px);
}
nav.scrolled {
  padding: 16px 48px;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}
.nav-logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--navy);
}
.nav-logo img { height: 32px; width: 32px; border-radius: 6px; }
.nav-logo span {
  font-weight: 800; font-size: 18px; letter-spacing: 2px; text-transform: uppercase;
}
.nav-links { display:flex; gap: 32px; list-style:none; }
.nav-links a {
  text-decoration:none; color: var(--text-secondary);
  font-size: 14px; letter-spacing: 0.5px; font-weight: 500;
  position: relative; transition: color 0.3s;
}
.nav-links a:hover { color: var(--navy); }
.nav-links a::after {
  content:''; position:absolute; bottom:-4px; left:0;
  width:0; height:2px; background: var(--navy);
  transition: width 0.4s var(--transition);
}
.nav-links a:hover::after { width:100%; }
.nav-cta {
  padding: 10px 24px; border-radius: 100px;
  background: var(--navy); color: #fff;
  font-weight: 600; font-size: 13px;
  text-decoration:none; letter-spacing: 0.5px;
  transition: all 0.3s ease;
  border: none; cursor: pointer;
  font-family: inherit;
}
.nav-cta:hover { transform: scale(1.05); box-shadow: 0 8px 30px rgba(27,42,74,0.25); }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  padding: 120px 48px 80px;
}
.hero-bg {
  position: absolute; inset:0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(27,42,74,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(58,90,140,0.04) 0%, transparent 50%);
}
.hero-grid {
  position: absolute; inset:0;
  background-image:
    linear-gradient(rgba(27,42,74,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27,42,74,0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  animation: gridMove 20s linear infinite;
}
@keyframes gridMove {
  0% { transform: translate(0,0); }
  100% { transform: translate(80px,80px); }
}
.hero-content {
  text-align: center; position: relative; z-index:2;
  max-width: 900px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 100px;
  background: var(--glass); border: 1px solid var(--glass-border);
  font-size: 12px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--navy); margin-bottom: 32px;
  font-weight: 600;
  animation: fadeUp 1s 2s both;
}
.hero-badge .dot {
  width:6px; height:6px; border-radius:50%;
  background: var(--navy);
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:0.5; transform:scale(0.8); }
}
.hero h1 {
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 900; line-height: 1.05;
  letter-spacing: -3px;
  color: var(--navy-dark);
  animation: fadeUp 1s 2.2s both;
}
.hero h1 .gradient-text {
  background: var(--gradient-1);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  margin-top: 24px; line-height: 1.7;
  font-weight: 400;
  animation: fadeUp 1s 2.4s both;
}
.hero-stats {
  display: flex; justify-content: center; gap: 60px;
  margin-top: 56px;
  animation: fadeUp 1s 2.6s both;
}
.hero-stat-num {
  font-size: 2.5rem; font-weight: 800; letter-spacing: -1px;
  color: var(--navy);
}
.hero-stat-label {
  font-size: 12px; color: var(--text-dim);
  letter-spacing: 2px; text-transform: uppercase; margin-top: 4px;
  font-weight: 500;
}
.hero-scroll {
  position: absolute; bottom: 40px; left:50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  animation: fadeUp 1s 3s both;
}
.hero-scroll span {
  font-size: 10px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--text-dim); font-weight: 500;
}
.scroll-line {
  width:1px; height: 40px; background: rgba(27,42,74,0.1);
  position: relative; overflow: hidden;
}
.scroll-line::after {
  content:''; position: absolute; top:-100%; left:0;
  width:100%; height:100%;
  background: var(--navy);
  animation: scrollDown 1.5s ease infinite;
}
@keyframes scrollDown {
  0% { top:-100%; }
  100% { top:100%; }
}
@keyframes fadeUp {
  from { opacity:0; transform:translateY(30px); }
  to { opacity:1; transform:translateY(0); }
}

/* ─── SECTION COMMON ─── */
section { padding: 120px 48px; position: relative; }
.section-label {
  font-size: 11px; letter-spacing: 4px; text-transform: uppercase;
  color: var(--navy); margin-bottom: 16px; font-weight: 700;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800; letter-spacing: -1.5px; line-height: 1.2;
  color: var(--navy-dark);
}
.section-desc {
  color: var(--text-secondary); font-size: 1.05rem;
  max-width: 560px; line-height: 1.8; margin-top: 16px; font-weight: 400;
}

/* reveal animation */
.reveal {
  opacity: 0; transform: translateY(50px);
  transition: opacity 0.8s ease, transform 0.8s var(--transition);
}
.reveal.visible { opacity:1; transform: translateY(0); }

/* ─── ABOUT ─── */
.about { max-width: 1200px; margin: 0 auto; }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center; margin-top: 64px;
}
.about-text p {
  color: var(--text-secondary); line-height: 2;
  font-size: 1rem; font-weight: 400;
}
.about-text p + p { margin-top: 20px; }
.about-visual {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.about-card {
  padding: 32px 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  transition: all 0.4s ease;
  text-align: center;
}
.about-card:hover {
  border-color: rgba(27,42,74,0.25);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(27,42,74,0.08);
}
.about-card .card-icon { font-size: 2rem; margin-bottom: 12px; }
.about-card h4 { font-size: 14px; font-weight: 700; margin-bottom: 6px; color: var(--navy); }
.about-card p { font-size: 12px; color: var(--text-dim); line-height: 1.5; }

/* ─── SERVICES ─── */
.services { background: var(--bg-secondary); }
.services-inner { max-width: 1200px; margin: 0 auto; }
.services-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; margin-top: 64px;
}
.service-item {
  padding: 40px 28px;
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  position: relative; overflow: hidden;
  transition: all 0.5s var(--transition);
  cursor: default;
}
.service-item::before {
  content:''; position: absolute; top:0; left:0; right:0;
  height: 3px; background: var(--gradient-1);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.5s var(--transition);
}
.service-item:hover::before { transform: scaleX(1); }
.service-item:hover {
  border-color: rgba(27,42,74,0.2);
  transform: translateY(-8px);
  box-shadow: 0 30px 80px rgba(27,42,74,0.1);
}
.service-num {
  font-size: 48px; font-weight: 900;
  color: var(--navy);
  opacity: 0.12; margin-bottom: 24px;
}
.service-item h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; color: var(--navy); }
.service-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

/* ─── PORTFOLIO ─── */
.portfolio-inner { max-width: 1400px; margin: 0 auto; }
.portfolio-filter {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-top: 40px; margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 20px; border-radius: 100px;
  background: var(--bg-secondary); border: 1px solid var(--glass-border);
  color: var(--text-secondary); font-size: 13px;
  cursor: pointer; transition: all 0.3s ease;
  font-family: inherit; font-weight: 500;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--navy); color: #fff;
  border-color: var(--navy); font-weight: 600;
}
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.portfolio-card {
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.5s var(--transition);
  cursor: pointer;
  text-decoration: none; color: inherit;
  display: block;
}
.portfolio-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: rgba(27,42,74,0.25);
  box-shadow: 0 30px 80px rgba(27,42,74,0.1);
}
.portfolio-thumb {
  width:100%; height: 200px;
  object-fit: cover;
  transition: transform 0.6s var(--transition);
}
.portfolio-card:hover .portfolio-thumb { transform: scale(1.05); }
.portfolio-thumb-wrap { overflow: hidden; position: relative; }
.portfolio-category-badge {
  position: absolute; top: 12px; left: 12px;
  padding: 4px 12px; border-radius: 100px;
  background: rgba(27,42,74,0.85); backdrop-filter: blur(10px);
  font-size: 11px; color: #fff;
  letter-spacing: 1px; font-weight: 600;
}
.portfolio-info { padding: 20px 24px; }
.portfolio-info h4 {
  font-size: 15px; font-weight: 600;
  line-height: 1.5; margin-bottom: 8px;
  color: var(--navy-dark);
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.portfolio-info p {
  font-size: 12px; color: var(--text-dim);
  line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.portfolio-link-icon {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; color: var(--navy); margin-top: 12px;
  font-weight: 600; letter-spacing: 0.5px;
}

/* ─── PROCESS ─── */
.process { background: var(--bg-secondary); }
.process-inner { max-width: 1000px; margin: 0 auto; }
.process-steps { margin-top: 64px; position: relative; }
.process-line {
  position: absolute; left: 24px; top: 0; bottom: 0;
  width: 1px; background: rgba(27,42,74,0.1);
}
.process-step {
  display: flex; gap: 40px; padding: 40px 0;
  position: relative;
}
.process-dot {
  width: 48px; height: 48px; min-width: 48px;
  border-radius: 50%;
  background: var(--bg-primary); border: 2px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; color: var(--navy);
  position: relative; z-index: 2;
  transition: all 0.3s ease;
}
.process-step:hover .process-dot {
  background: var(--navy); color: #fff;
  border-color: var(--navy);
  box-shadow: 0 8px 30px rgba(27,42,74,0.2);
}
.process-step h4 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; color: var(--navy); }
.process-step p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; }

/* ─── CONTACT CTA ─── */
.contact-cta {
  text-align: center;
  padding: 160px 48px;
  position: relative; overflow: hidden;
}
.contact-cta::before {
  content:''; position: absolute; inset:0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(27,42,74,0.06) 0%, transparent 70%);
}
.contact-cta .section-title { position: relative; z-index:1; }
.contact-cta .section-desc {
  margin: 16px auto 0; text-align: center; position: relative; z-index:1;
}
.cta-buttons {
  display: flex; gap: 16px; justify-content: center;
  margin-top: 48px; position: relative; z-index:1;
}
.btn-primary {
  padding: 16px 40px; border-radius: 100px;
  background: var(--navy); color: #fff;
  font-weight: 700; font-size: 15px;
  text-decoration:none; border:none; cursor:pointer;
  font-family: inherit;
  transition: all 0.3s ease;
  letter-spacing: 0.5px;
}
.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 40px rgba(27,42,74,0.3);
}
.btn-outline {
  padding: 16px 40px; border-radius: 100px;
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--navy);
  font-weight: 600; font-size: 15px;
  text-decoration:none; cursor:pointer;
  font-family: inherit;
  transition: all 0.3s ease;
}
.btn-outline:hover {
  border-color: var(--navy); background: rgba(27,42,74,0.04);
}

/* ─── FOOTER ─── */
footer {
  padding: 60px 48px 40px;
  border-top: 1px solid var(--glass-border);
  max-width: 1400px; margin: 0 auto;
}
.footer-top {
  display: flex; justify-content: space-between;
  align-items: flex-start; gap: 40px; flex-wrap: wrap;
}
.footer-brand span {
  font-weight: 800; font-size: 18px; letter-spacing: 2px;
  color: var(--navy);
}
.footer-brand p {
  color: var(--text-dim); font-size: 13px; margin-top: 8px; line-height: 1.6;
}
.footer-links { display: flex; gap: 40px; }
.footer-links a {
  color: var(--text-secondary); text-decoration: none;
  font-size: 13px; transition: color 0.3s; font-weight: 500;
}
.footer-links a:hover { color: var(--navy); }
.footer-bottom {
  margin-top: 40px; padding-top: 24px;
  border-top: 1px solid rgba(27,42,74,0.06);
  display: flex; justify-content: space-between;
  font-size: 12px; color: var(--text-dim);
}

/* ─── MARQUEE ─── */
.marquee-wrap {
  overflow: hidden;
  padding: 40px 0;
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}
.marquee {
  display: flex; gap: 60px;
  animation: marquee 20s linear infinite;
  width: max-content;
}
.marquee span {
  font-size: 5rem; font-weight: 900;
  letter-spacing: -2px;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px rgba(27,42,74,0.1);
}
.marquee span.filled {
  color: rgba(27,42,74,0.05);
  -webkit-text-stroke: 1px rgba(27,42,74,0.12);
}
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  nav { padding: 16px 24px; }
  nav.scrolled { padding: 12px 24px; }
  .nav-links { display:none; }
  section { padding: 80px 24px; }
  .hero { padding: 100px 24px 80px; }
  .hero-stats { gap: 32px; flex-wrap: wrap; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .footer-top { flex-direction: column; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}