/* =====================
   Reset & Base
   ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --accent: #8b5cf6;
  --bg: #ffffff;
  --bg-alt: #f8f9ff;
  --text: #111827;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(99,102,241,.10);
  --shadow-lg: 0 8px 48px rgba(99,102,241,.18);
  --transition: .25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Pretendard', 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* =====================
   Layout
   ===================== */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-eyebrow {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .15em;
  color: var(--primary);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -.02em;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* =====================
   Buttons
   ===================== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: 2px solid transparent;
  letter-spacing: .01em;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99,102,241,.35);
}

.btn-outline {
  border-color: rgba(255,255,255,.6);
  color: #fff;
  background: transparent;
}
.btn-outline:hover {
  background: rgba(255,255,255,.15);
  transform: translateY(-2px);
}

.btn-full { width: 100%; text-align: center; }

/* =====================
   Navbar
   ===================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

.navbar.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,.08); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.3rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 36px;
}

.nav-links a {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--primary); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text);
}

/* =====================
   Hero
   ===================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #6d28d9 100%);
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(99,102,241,.4) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139,92,246,.3) 0%, transparent 40%);
}

.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  max-width: 740px;
}

.hero-eyebrow {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  margin-bottom: 20px;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.03em;
  margin-bottom: 24px;
}

.highlight {
  background: linear-gradient(90deg, #a5b4fc, #e879f9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.75);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.4);
  font-size: 1.4rem;
  animation: bounce 1.8s infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* =====================
   Cards (Services)
   ===================== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.card-icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
  line-height: 1;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.card p {
  color: var(--text-muted);
  font-size: .93rem;
  line-height: 1.7;
}

/* =====================
   Team
   ===================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.team-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 900;
  color: #fff;
  margin: 0 auto 20px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.avatar-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: none;
}

.avatar-img.has-img {
  display: block;
}

.avatar-img.has-img ~ span {
  display: none;
}

.team-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.role {
  font-size: .85rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 12px;
}

.bio {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.socials {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.socials a {
  font-size: .8rem;
  font-weight: 600;
  color: var(--primary);
  padding: 4px 12px;
  border: 1px solid var(--primary);
  border-radius: 50px;
  transition: background var(--transition), color var(--transition);
}
.socials a:hover {
  background: var(--primary);
  color: #fff;
}

/* =====================
   Contact
   ===================== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item strong {
  display: block;
  font-size: .85rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.contact-item p { color: var(--text-muted); font-size: .95rem; }

/* Form */
.contact-form {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.required { color: var(--primary); }

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: .95rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}

.form-notice {
  margin-top: 12px;
  font-size: .88rem;
  text-align: center;
  min-height: 1.4em;
  color: #10b981;
}
.form-notice.error { color: #ef4444; }

/* =====================
   Footer
   ===================== */
.footer {
  background: #0f0e1a;
  color: rgba(255,255,255,.5);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: .85rem;
}

.footer .logo {
  background: linear-gradient(135deg, #a5b4fc, #e879f9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a:hover { color: #fff; }

/* =====================
   Scroll Animations
   ===================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .5s ease, transform .5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================
   Responsive
   ===================== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: #fff;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    gap: 16px;
  }
  .nav-toggle { display: block; }

  .section { padding: 64px 0; }
  .contact-layout { grid-template-columns: 1fr; gap: 40px; }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn { text-align: center; }
  .footer-inner { flex-direction: column; text-align: center; }
}