@charset "UTF-8";

/* ── 테마 색상 변수 ── */
:root {
  --primary: #f8fafc;
  --secondary: #ffffff;
  --accent: #2563eb;
  --accent2: #059669;
  --text: #1e293b;
  --text-muted: #64748b;
  --card-bg: #ffffff;
  --border: rgba(0, 0, 0, 0.08);

  /* 다크 테마 (헤더/푸터용) */
  --nav-bg: rgba(10,22,40,0.95);
  --nav-bg-scrolled: rgba(10,22,40,0.98);
  --dark-bg: #0a1628;
  --dark-accent: #00c8ff;
  --dark-accent2: #00ff9d;
  --dark-text-muted: #8a9bb5;
  --dark-border: rgba(0,200,255,0.15);
}

/* ── 기본 리셋 ── */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans KR', sans-serif;
  background: var(--primary);
  color: var(--text);
  overflow-x: hidden;
}

/* ── 스크롤바 ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--primary); }
::-webkit-scrollbar-thumb { background: var(--dark-accent); border-radius: 3px; }

/* ── 네비게이션 (헤더) ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 40px; height: 90px; 
  display: flex; align-items: center; justify-content: space-between;
  background: var(--nav-bg); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--dark-border); transition: all 0.3s;
}
nav.scrolled {
  height: 80px; background: var(--nav-bg-scrolled);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3); border-color: transparent;
}

/* ── 로고 스타일 ── */
.nav-logo, .footer-logo {
  display: inline-flex; align-items: baseline; 
  font-family: 'Bebas Neue', sans-serif; font-size: 2.2rem; letter-spacing: 1px;
  color: var(--dark-accent); text-decoration: none; text-transform: lowercase;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); position: relative;
}
.footer-logo { font-size: 1.6rem; }
.en-edu { color: var(--dark-accent2); margin-left: 2px; transition: text-shadow 0.3s ease; }
.ko-text {
  font-family: 'Noto Sans KR', sans-serif; font-size: 1.15rem; font-weight: 700;
  letter-spacing: -0.5px; margin-left: 10px;
  background: linear-gradient(135deg, #ffffff 0%, var(--dark-text-muted) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  opacity: 0.85; transition: all 0.3s ease; text-transform: none; 
}
.footer-logo .ko-text { font-size: 0.85rem; }

.nav-logo:hover, .footer-logo:hover { transform: translateY(-2px); text-shadow: 0 4px 20px rgba(0, 200, 255, 0.4); }
.nav-logo:hover .en-edu, .footer-logo:hover .en-edu { text-shadow: 0 4px 20px rgba(0, 255, 157, 0.4); }
.nav-logo:hover .ko-text, .footer-logo:hover .ko-text {
  opacity: 1; filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.4)); transform: scale(1.05) translateX(2px);
}

/* ── GNB 메뉴 ── */
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links > li { position: relative; padding: 30px 0; }
.nav-links a {
  font-size: 1.1rem; font-weight: 700; letter-spacing: 0.5px;
  color: var(--dark-text-muted); text-decoration: none;
  transition: color 0.2s; padding: 4px 8px;
}
.nav-links a:hover, .nav-links a.active { color: var(--dark-accent); }

/* 서브메뉴 */
.sub-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(10px);
  background: var(--nav-bg-scrolled); min-width: 150px; text-align: center;
  list-style: none; padding: 10px 0; border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3); border: 1px solid var(--dark-border);
  opacity: 0; visibility: hidden; transition: all 0.3s ease;
}
.nav-links > li:hover .sub-menu {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(-10px);
}
.sub-menu li { padding: 0; }
.sub-menu a {
  display: block; padding: 12px 20px; font-size: 0.95rem; font-weight: 500;
  color: var(--dark-text-muted); transition: all 0.2s;
}
.sub-menu a:hover { color: var(--dark-accent); background: rgba(0,200,255,0.05); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; }
.nav-toggle span { width: 24px; height: 2px; background: var(--dark-accent); display: block; transition: 0.3s; }
.user-menu { display: flex; gap: 12px; align-items: center; }
.btn-login {
  padding: 8px 18px; border: 1px solid var(--dark-accent); background: transparent;
  color: var(--dark-accent); border-radius: 24px; font-size: 0.9rem; font-weight: 600;
  text-decoration: none; transition: 0.3s;
}
.btn-login:hover { background: rgba(0,200,255,0.1); }


/* ── 서브페이지 상단 배너 ── */
.page-hero {
  padding: 180px 40px 90px;
  background: linear-gradient(135deg, var(--dark-bg) 0%, #0f2442 60%, #0a1628 100%);
  text-align: center; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,200,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,255,0.06) 1px, transparent 1px);
  background-size: 50px 50px; animation: gridMove 20s linear infinite; z-index: 0;
}
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 60% 50%, rgba(0,200,255,0.08) 0%, transparent 70%);
  z-index: 0;
}
.page-hero-content { position: relative; z-index: 2; animation: fadeInUp 0.8s ease both; }
.page-hero-tag {
  display: inline-block; padding: 6px 18px; border-radius: 20px; margin-bottom: 20px;
  border: 1px solid var(--dark-border); background: rgba(0,200,255,0.08);
  font-size: 0.82rem; letter-spacing: 2px; color: var(--dark-accent); text-transform: uppercase;
}
.page-hero-title {
  font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 700; color: #fff;
  margin-bottom: 20px; letter-spacing: -1px; line-height: 1.15;
}
.page-hero-title .hl { color: var(--dark-accent); }
.page-hero-sub {
  font-size: 1.15rem; color: var(--dark-text-muted); font-weight: 300;
  max-width: 580px; margin: 0 auto; line-height: 1.7;
}

/* ── 섹션 공통 ── */
.about-wrap { max-width: 1200px; margin: 0 auto; padding: 0 40px; }

/* ── 소개 투 컬럼 ── */
.intro-section { padding: 110px 40px; max-width: 1200px; margin: 0 auto; }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.intro-text .section-tag { margin-bottom: 18px; }
.intro-text h2 { font-size: 2.2rem; font-weight: 700; color: var(--text); margin-bottom: 24px; line-height: 1.35; }
.intro-text h2 .hl { color: var(--accent); }
.intro-text p { font-size: 1.05rem; color: var(--text-muted); line-height: 1.75; margin-bottom: 20px; word-break: keep-all; }
.intro-text .btn-primary { margin-top: 12px; }
.intro-img { border-radius: 20px; overflow: hidden; box-shadow: 0 24px 50px rgba(0,0,0,0.1); }
.intro-img img { width: 100%; display: block; transition: transform 0.5s ease; }
.intro-img:hover img { transform: scale(1.04); }

/* ── 수치 카운트 띠 ── */
.stats-band {
  background: linear-gradient(135deg, var(--accent) 0%, #1d4ed8 100%);
  padding: 60px 40px;
}
.stats-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; text-align: center; }
.stat-item .num { font-family: 'Rajdhani', sans-serif; font-size: 3.2rem; font-weight: 700; color: #fff; line-height: 1; }
.stat-item .unit { font-size: 1.2rem; color: rgba(255,255,255,0.8); font-weight: 400; }
.stat-item .label { font-size: 0.95rem; color: rgba(255,255,255,0.75); margin-top: 8px; }

/* ── Vision & Mission ── */
.vision-section { background: #fff; padding: 110px 40px; border-top: 1px solid var(--border); }
.vision-inner { max-width: 1200px; margin: 0 auto; text-align: center; }
.section-eyebrow { font-size: 0.82rem; letter-spacing: 2px; color: var(--accent); text-transform: uppercase; font-weight: 700; margin-bottom: 14px; }
.vision-title { font-size: 2.2rem; font-weight: 700; margin-bottom: 60px; color: var(--text); }
.vision-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.v-card {
  padding: 44px 32px; background: var(--primary); border-radius: 18px;
  border: 1px solid var(--border); transition: all 0.3s; text-align: left;
}
.v-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.06); border-color: rgba(37,99,235,0.3); }
.v-icon-wrap {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.7rem; margin-bottom: 22px;
}
.v-icon-blue  { background: rgba(37,99,235,0.1); }
.v-icon-green { background: rgba(5,150,105,0.1); }
.v-icon-amber { background: rgba(245,158,11,0.1); }
.v-title { font-size: 1.2rem; font-weight: 700; color: var(--text); margin-bottom: 14px; }
.v-desc { font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; word-break: keep-all; }

/* ── 강사진 섹션 ── */
.team-section { padding: 110px 40px; max-width: 1200px; margin: 0 auto; }
.team-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 28px; margin-top: 52px; }
.team-card {
  background: #fff; border: 1px solid var(--border); border-radius: 16px;
  overflow: hidden; transition: all 0.3s; text-align: center;
}
.team-card:hover { transform: translateY(-8px); box-shadow: 0 16px 40px rgba(0,0,0,0.08); }
.team-thumb { height: 200px; overflow: hidden; background: linear-gradient(135deg, #e2e8f0, #cbd5e1); }
.team-thumb img { width: 100%; height: 100%; object-fit: cover; }
.team-thumb-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-size: 3rem; }
.team-body { padding: 22px 18px; }
.team-name { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.team-role { font-size: 0.82rem; color: var(--accent); font-weight: 600; margin-bottom: 10px; }
.team-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }

/* ── Why oneedu ── */
.why-section { background: var(--primary); padding: 110px 40px; border-top: 1px solid var(--border); }
.why-inner { max-width: 1200px; margin: 0 auto; }
.why-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; margin-top: 52px; }
.why-box { background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 36px 26px; text-align: center; transition: 0.3s; }
.why-box:hover { border-color: var(--accent); box-shadow: 0 12px 30px rgba(37,99,235,0.08); }
.why-num { font-family: 'Rajdhani', sans-serif; font-size: 3.5rem; font-weight: 700; color: #e2e8f0; line-height: 1; margin-bottom: 14px; transition: 0.3s; }
.why-box:hover .why-num { color: var(--accent); }
.why-box h4 { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.why-box p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; word-break: keep-all; }

/* ── CTA 배너 ── */
.cta-section {
  background: linear-gradient(135deg, var(--dark-bg) 0%, #0f2442 100%);
  padding: 100px 40px; text-align: center; position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,200,255,0.12) 0%, transparent 60%);
}
.cta-content { position: relative; z-index: 1; }
.cta-title { font-size: 2.4rem; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: -0.5px; }
.cta-sub { font-size: 1.05rem; color: var(--dark-text-muted); margin-bottom: 40px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-cta-primary {
  padding: 15px 36px; background: var(--dark-accent); color: var(--dark-bg);
  border: none; border-radius: 8px; font-size: 1rem; font-weight: 700;
  text-decoration: none; transition: all 0.2s; font-family: inherit;
}
.btn-cta-primary:hover { background: #00b8ef; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,200,255,0.3); }
.btn-cta-outline {
  padding: 15px 36px; background: transparent;
  border: 1px solid var(--dark-border); color: var(--dark-text-muted);
  border-radius: 8px; font-size: 1rem; font-weight: 600;
  text-decoration: none; transition: all 0.2s; font-family: inherit;
}
.btn-cta-outline:hover { border-color: var(--dark-accent); color: var(--dark-accent); }

/* ── 반응형 ── */
@media(max-width:1024px) { .team-grid { grid-template-columns: repeat(2,1fr); } }
@media(max-width:900px) {
  .page-hero { padding: 130px 20px 70px; }
  .intro-section { padding: 70px 20px; }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats-inner { grid-template-columns: repeat(2,1fr); }
  .vision-grid { grid-template-columns: 1fr; }
  .team-section { padding: 70px 20px; }
  .why-section { padding: 70px 20px; }
  .why-grid { grid-template-columns: repeat(2,1fr); }
  .cta-section { padding: 70px 20px; }
}
@media(max-width:560px) {
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
}