/*
Design DNA (이번 생성용 – 고정)
스타일 프리셋: Vibrant Mobile Studio
컬러 전략: Midnight Teal Base + Neon Coral Accent + Electric Lime Highlights
레이아웃 패턴: Kinetic Hero + Floating Neon Badges
섹션 순서 템플릿: Header → Hero → Mobile Game Showcase → Software Dev Focus → Services → About → Contact/Location → Business Info → Footer
아이콘 스타일: Bold Neon Icon (SVG, thick outline, soft glow)
배경 패턴: Animated Island Wave Lines (SVG pattern + CSS animation, subtle)
*/
:root {
  --midnight-900: #041A1F;
  --midnight-800: #06242A;
  --midnight-700: #0B2F36;
  --midnight-600: #0E3A43;
  --neon-coral: #FF5C7A;
  --electric-lime: #B8FF4A;
  --teal: #00D2C9;
  --text-main: #E6FFF7;
  --text-dim: #B7D6D1;
  --card: #0C2B31;
  --card-strong: #0F3640;
  --glow: 0 0 12px rgba(255, 92, 122, 0.35), 0 0 18px rgba(184, 255, 74, 0.2);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-soft: 0 12px 30px rgba(2, 10, 12, 0.45);
  --max-w: 1200px;
  --grid-gap: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(circle at top, #0F3C43 0%, #04181D 55%, #021114 100%);
  color: var(--text-main);
  line-height: 1.6;
}

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

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

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--electric-lime);
  outline-offset: 3px;
}

.container {
  width: min(100% - 32px, var(--max-w));
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(4, 26, 31, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 18px;
}

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

.brand span {
  font-weight: 700;
  letter-spacing: 0.04em;
}

nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

nav a {
  font-size: 0.95rem;
  color: var(--text-dim);
}

nav a:hover {
  color: var(--text-main);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 10px;
}

.hero {
  position: relative;
  padding: 90px 0 110px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/hero.svg") center/cover no-repeat;
  opacity: 0.9;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(4, 26, 31, 0.75), rgba(6, 36, 42, 0.6));
  z-index: 0;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 36px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 3vw + 1.8rem, 3.6rem);
  margin: 0 0 16px;
}

.hero p {
  color: var(--text-dim);
  margin: 0 0 24px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  border: none;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn-primary {
  background: var(--neon-coral);
  color: #081A1E;
  box-shadow: var(--glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 1px solid rgba(184, 255, 74, 0.6);
}

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

.neon-badges {
  position: relative;
  height: 320px;
}

.badge {
  position: absolute;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(12, 43, 49, 0.7);
  border: 1px solid rgba(184, 255, 74, 0.6);
  color: var(--text-main);
  font-size: 0.85rem;
  box-shadow: var(--glow);
  animation: float 6s ease-in-out infinite;
}

.badge.coral {
  border-color: rgba(255, 92, 122, 0.7);
}

.badge.lime {
  border-color: rgba(184, 255, 74, 0.9);
}

.badge:nth-child(1) { top: 20px; left: 20px; animation-delay: 0s; }
.badge:nth-child(2) { top: 120px; right: 30px; animation-delay: 1s; }
.badge:nth-child(3) { bottom: 40px; left: 40px; animation-delay: 2s; }
.badge:nth-child(4) { bottom: 90px; right: 50px; animation-delay: 3s; }

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

.section {
  padding: 80px 0;
}

.section h2 {
  font-size: clamp(1.8rem, 2vw + 1rem, 2.6rem);
  margin: 0 0 16px;
}

.section p.lead {
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 0 32px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--grid-gap);
}

.card {
  background: linear-gradient(150deg, rgba(12, 43, 49, 0.9), rgba(8, 28, 33, 0.9));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card .chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 92, 122, 0.12);
  border: 1px solid rgba(255, 92, 122, 0.5);
  font-size: 0.78rem;
}

.card ul {
  padding-left: 18px;
  margin: 0;
  color: var(--text-dim);
}

.card button {
  align-self: flex-start;
}

.icon-box {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(184, 255, 74, 0.12);
  border: 1px solid rgba(184, 255, 74, 0.6);
  display: grid;
  place-items: center;
  box-shadow: var(--glow);
}

.icon-box svg {
  width: 26px;
  height: 26px;
}

.focus-wrap {
  background: rgba(12, 43, 49, 0.7);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-soft);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.tabs button {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
}

.tabs button[aria-selected="true"] {
  border-color: var(--electric-lime);
  box-shadow: var(--glow);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px;
}

.service-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(10, 34, 39, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 10px;
}

.service-card .label {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.info-block {
  background: rgba(12, 43, 49, 0.6);
  border-radius: var(--radius-md);
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

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

.form input,
.form textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(4, 18, 21, 0.8);
  color: var(--text-main);
}

.footer {
  padding: 30px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  color: var(--text-dim);
}

.scroll-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
  font-weight: 600;
}

.pattern-wave {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
      -45deg,
      rgba(0, 210, 201, 0.06) 0,
      rgba(0, 210, 201, 0.06) 2px,
      transparent 2px,
      transparent 12px
    );
  opacity: 0.3;
  animation: drift 18s linear infinite;
  pointer-events: none;
}

@keyframes drift {
  0% { transform: translateX(-10%); }
  100% { transform: translateX(10%); }
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(2, 10, 12, 0.75);
  z-index: 100;
  padding: 20px;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--card-strong);
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  width: min(520px, 100%);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.modal-close {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-main);
  border-radius: 999px;
  padding: 6px 12px;
}

@media (max-width: 900px) {
  nav {
    position: absolute;
    top: 68px;
    right: 0;
    flex-direction: column;
    background: rgba(4, 26, 31, 0.98);
    padding: 14px 18px;
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    display: none;
  }

  nav.open {
    display: flex;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero {
    padding-top: 110px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}