/*
Design DNA
스타일 프리셋: Premium Noir Studio
컬러 전략: Obsidian Black Base + Champagne Gold Accent + Ivory Highlights
레이아웃 패턴: Cinematic Hero + Gallery Rail
섹션 순서 템플릿: Header → Hero → Wired Game Studio → Offline Game Studio → Services → About → Contact/Location → Business Info → Footer
아이콘 스타일: Elegant Thin Line Icon (SVG, refined, consistent stroke)
배경 패턴: Subtle Art-Deco Geometry (SVG, ultra low contrast)
*/
:root {
  --obsidian: #0b0d10;
  --obsidian-2: #14171b;
  --ivory: #f2efe7;
  --ivory-2: #d9d4c8;
  --gold: #d2b56f;
  --line: #272b33;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --max: 1180px;
  --pad: clamp(16px, 3vw, 28px);
  --font: system-ui, -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--obsidian);
  color: var(--ivory);
  line-height: 1.6;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 8px;
}

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

.container {
  width: min(var(--max), 100% - 2 * var(--pad));
  margin: 0 auto;
}

.section {
  padding: clamp(56px, 9vw, 110px) 0;
}

.kicker {
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--ivory-2);
}

.title {
  font-size: clamp(2rem, 3.4vw, 3.1rem);
  margin: 12px 0 18px;
}

.lead {
  color: var(--ivory-2);
  font-size: clamp(1rem, 2.1vw, 1.15rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid var(--ivory-2);
  color: var(--ivory);
  background: transparent;
  font-weight: 600;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.btn.primary {
  border-color: var(--gold);
  color: var(--gold);
}

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

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 13, 16, 0.85);
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease, padding 0.2s ease;
}

.header.compact {
  background: rgba(11, 13, 16, 0.97);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.navlinks {
  display: flex;
  gap: 20px;
  align-items: center;
  color: var(--ivory-2);
}

.navlinks a {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ivory);
  padding: 8px 14px;
  border-radius: 999px;
}

.hero {
  background: linear-gradient(120deg, var(--obsidian), var(--obsidian-2));
}

.hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.hero-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 4vw, 40px);
  background: rgba(20, 23, 27, 0.6);
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.hero-art {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  overflow: hidden;
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
  background: rgba(20, 23, 27, 0.6);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
}

.card h3 {
  margin: 12px 0 6px;
}

.note {
  color: var(--ivory-2);
  font-size: 0.9rem;
}

.diagram {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  background: rgba(11, 13, 16, 0.7);
}

.toggle {
  border: 1px solid var(--line);
  color: var(--ivory-2);
  background: transparent;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
  margin-top: 10px;
}

.toggle[aria-expanded="true"] {
  border-color: var(--gold);
  color: var(--gold);
}

.timeline {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(200px, 1fr) 2fr;
  align-items: start;
}

.timeline-steps {
  display: grid;
  gap: 10px;
}

.timeline-step {
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ivory-2);
  text-align: left;
}

.timeline-step.active {
  border-color: var(--gold);
  color: var(--gold);
}

.timeline-detail {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  min-height: 140px;
  background: rgba(20, 23, 27, 0.55);
}

.rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 1fr);
  gap: 18px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}

.rail .card {
  scroll-snap-align: start;
}

.icon-line svg {
  width: 48px;
  height: 48px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 1.6;
}

.contact-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: start;
}

.form {
  display: grid;
  gap: 12px;
}

.form input,
.form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(20, 23, 27, 0.7);
  color: var(--ivory);
  font-family: inherit;
}

.form textarea {
  min-height: 120px;
  resize: vertical;
}

.form .status {
  min-height: 22px;
  font-size: 0.9rem;
  color: var(--ivory-2);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 30px 0 40px;
  text-align: center;
}

.deco-bg {
  position: relative;
  overflow: hidden;
}

.deco-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'><path d='M10 10h40l10 10v40l-10 10h-40l-10-10v-40z' fill='none' stroke='%23272b33' stroke-width='1'/><path d='M60 60h40l10 10v40l-10 10h-40l-10-10v-40z' fill='none' stroke='%23272b33' stroke-width='1'/></svg>");
  opacity: 0.25;
  pointer-events: none;
}

@media (max-width: 960px) {
  .navlinks {
    position: absolute;
    top: 64px;
    right: var(--pad);
    flex-direction: column;
    background: rgba(11, 13, 16, 0.97);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 14px;
    display: none;
  }
  .navlinks.open {
    display: flex;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .timeline {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}