:root {
  /* 공주대학교 실제 CI 컬러를 알면 이 값들만 바꾸면 전체 톤이 바뀝니다 */
  --school-navy: #0b2a4a;
  --school-navy-dark: #071c33;
  --school-gold: #d9a441;
  --steel: #48576a;

  --bg: #eef1f5;
  --card-bg: #ffffff;
  --text: #1f2933;
  --muted: #5b6673;
  --border: #e2e6ea;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}

a {
  color: inherit;
}

/* ===== 상단 유틸 바 ===== */
.topbar {
  background: var(--school-navy-dark);
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
}

.topbar-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 6px 20px;
}

.topbar .sep {
  margin: 0 8px;
  opacity: 0.5;
}

/* ===== 메인 네비게이션 ===== */
.navbar {
  background: var(--school-navy);
  border-bottom: 3px solid var(--school-gold);
  position: sticky;
  top: 0;
  z-index: 10;
}

.navbar-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--school-gold);
  color: var(--school-navy);
  font-size: 16px;
}

.brand-text {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.02em;
}

.menu {
  display: flex;
  gap: 20px;
}

.menu a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s, color 0.15s;
}

.menu a:hover {
  color: #fff;
  border-bottom-color: var(--school-gold);
}

/* ===== 히어로 (블루프린트 배경) ===== */
.hero {
  position: relative;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.06) 0px,
      rgba(255, 255, 255, 0.06) 1px,
      transparent 1px,
      transparent 40px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.06) 0px,
      rgba(255, 255, 255, 0.06) 1px,
      transparent 1px,
      transparent 40px
    ),
    radial-gradient(circle at 15% 20%, rgba(217, 164, 65, 0.18), transparent 45%),
    linear-gradient(135deg, var(--school-navy) 0%, var(--school-navy-dark) 100%);
  color: #fff;
  padding: 64px 20px 96px;
  text-align: center;
  overflow: hidden;
}

.hero::after {
  content: "⚙";
  position: absolute;
  right: -30px;
  bottom: -60px;
  font-size: 220px;
  color: rgba(255, 255, 255, 0.05);
  transform: rotate(-10deg);
  pointer-events: none;
}

.hero-inner {
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

.hero-eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--school-gold);
  font-weight: 700;
}

.hero-title {
  margin: 0 0 10px;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.hero-sub {
  margin: 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
}

/* ===== 본문 ===== */
.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* 프로필 카드: 히어로에 걸치도록 음수 마진 */
.profile-card {
  background: var(--card-bg);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(11, 42, 74, 0.15);
  margin-top: -56px;
  padding: 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  border-top: 4px solid var(--school-gold);
  position: relative;
  z-index: 2;
}

.avatar {
  flex-shrink: 0;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 42px;
  border: 3px solid var(--school-navy);
}

.id-label {
  margin: 0 0 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--school-gold);
}

.name {
  margin: 0 0 4px;
  font-size: 24px;
  color: var(--school-navy);
}

.affiliation {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.tagline {
  margin: 0;
  font-size: 14px;
  font-style: italic;
  color: var(--steel);
}

/* 섹션 공통 */
.section {
  margin-top: 40px;
}

.section-title {
  margin: 0 0 20px;
  font-size: 20px;
  color: var(--school-navy);
}

.section-title span {
  padding-bottom: 8px;
  border-bottom: 3px solid var(--school-gold);
}

/* 관심 분야 그리드 */
.interest-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.interest-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: transform 0.15s, box-shadow 0.15s;
}

.interest-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(11, 42, 74, 0.12);
}

.interest-icon {
  font-size: 30px;
}

.interest-name {
  font-weight: 700;
  color: var(--school-navy);
  font-size: 14px;
}

/* 정보 리스트 (수업 / 연락처) */
.info-list {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.info-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  font-size: 15px;
  border-bottom: 1px solid var(--border);
}

.info-list li:last-child {
  border-bottom: none;
}

.info-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.info-list a {
  color: var(--school-navy);
  text-decoration: none;
  font-weight: 600;
}

.info-list a:hover {
  text-decoration: underline;
}

/* ===== 푸터 ===== */
.site-footer {
  background: var(--school-navy-dark);
  color: rgba(255, 255, 255, 0.7);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 36px 20px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.footer-title {
  color: #fff;
  font-weight: 700;
  margin: 0 0 10px;
  font-size: 14px;
}

.footer-col p {
  margin: 0 0 6px;
  font-size: 13px;
}

.footer-col a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.7);
}

.footer-col a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  padding: 14px 20px;
  font-size: 12px;
}

/* ===== 반응형 ===== */
@media (max-width: 640px) {
  .menu {
    display: none;
  }

  .hero {
    padding: 48px 16px 80px;
  }

  .hero-title {
    font-size: 26px;
  }

  .profile-card {
    flex-direction: column;
    text-align: center;
    margin-top: -48px;
  }

  .interest-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .interest-item {
    padding: 16px 6px;
  }

  .interest-icon {
    font-size: 24px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }
}