/* ==========================================
   Variables & Reset
   ========================================== */
:root {
  --primary: #ff6b8a;
  --primary-dark: #e0436b;
  --primary-glow: rgba(255, 107, 138, 0.3);
  --accent: #ffb347;
  --success: #4ade80;
  --bg: #130810;
  --bg-card: #1d0c17;
  --bg-card2: #270f20;
  --text: #fff0f5;
  --text-muted: #9a7585;
  --border: rgba(255, 107, 138, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR',
               'Noto Sans SC', 'Noto Sans JP', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; outline: none; font-family: inherit; }
a { color: var(--primary); text-decoration: none; }

/* ==========================================
   Layout & Container
   ========================================== */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 5rem 0;
}

/* ==========================================
   Header
   ========================================== */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  transition: background var(--transition), box-shadow var(--transition);
}

header.scrolled {
  background: rgba(11, 11, 24, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.nav-cta {
  display: none;
  padding: 0.5rem 1.25rem;
  background: var(--primary);
  color: #fff;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: opacity var(--transition), transform var(--transition);
}

.nav-cta:hover { opacity: 0.88; transform: translateY(-1px); }

/* ==========================================
   Language Switcher
   ========================================== */
.lang-switcher {
  display: flex;
  gap: 2px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 3px;
  flex-shrink: 0;
}

.lang-btn {
  background: transparent;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.lang-btn:hover { color: var(--text); }

.lang-btn.active {
  background: var(--primary);
  color: #fff;
}

/* ==========================================
   Footer
   ========================================== */
footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.footer-logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  max-width: 320px;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

/* ==========================================
   Utilities
   ========================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  background: rgba(124, 111, 255, 0.15);
  border: 1px solid rgba(124, 111, 255, 0.3);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: var(--primary);
  color: #fff;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--primary-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

/* ==========================================
   Scroll Reveal
   ========================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ==========================================
   Responsive
   ========================================== */
@media (min-width: 768px) {
  .nav-cta { display: flex; }
}

@media (max-width: 480px) {
  .lang-btn { padding: 4px 7px; font-size: 0.7rem; }
  section { padding: 3.5rem 0; }
}