:root {
  --color-bg: #f8f9fc;
  --color-primary: #1e3a5f;
  --color-accent: #2563eb;
  --color-accent-light: #3b82f6;
  --color-muted: #64748b;
  --color-naver: #03c75a;
  --color-kakao: #fee500;
  --color-kakao-text: #191919;
  --font-sans: 'Noto Sans KR', sans-serif;
  --safe-bottom: env(safe-area-inset-bottom, 0);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: #1e293b;
  background: var(--color-bg);
  line-height: 1.6;
  padding-bottom: 5rem; /* 카카오 버튼 공간 */
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  box-shadow: 0 1px 10px rgba(30, 58, 95, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.5rem;
  padding: 0.5rem 0;
}

.site-title {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
  text-decoration: none;
}

.nav {
  display: none;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.nav a {
  color: var(--color-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.35rem 0.5rem;
}

.nav a:hover {
  color: var(--color-accent);
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border: none;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%231e3a5f'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M4 6h16M4 12h16M4 18h16'/%3E%3C/svg%3E") center/24px no-repeat;
  cursor: pointer;
}

.nav.is-open {
  display: flex;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  padding: 1rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  flex-direction: column;
  align-items: stretch;
}

/* Hero */
.hero {
  padding: 2.5rem 1.25rem 2rem;
  background: linear-gradient(160deg, #1e3a5f 0%, #2563eb 100%);
  color: #fff;
  text-align: center;
}

.hero-tagline {
  font-size: 0.9rem;
  opacity: 0.95;
  margin-bottom: 0.25rem;
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hero-desc {
  font-size: 1rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn--hero {
  background: #fff;
  color: var(--color-primary);
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}

.btn--hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.8);
}

.btn--outline:hover {
  background: rgba(255,255,255,0.15);
}

/* Sections */
.section {
  padding: 2.5rem 0;
}

.section--alt {
  background: #fff;
  box-shadow: 0 1px 0 rgba(0,0,0,0.04);
}

.section--apply {
  background: linear-gradient(180deg, #eef2ff 0%, #f8f9fc 100%);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

.about-text {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 640px;
}

/* Teachers */
.teacher-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.teacher-card {
  background: var(--color-bg);
  padding: 1.5rem;
  border-radius: 12px;
  text-align: center;
}

.teacher-photo {
  width: 100px;
  height: 100px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: linear-gradient(145deg, #c7d2fe, #a5b4fc);
}

.teacher-card h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.teacher-card p {
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* Schedule */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.schedule-table {
  width: 100%;
  min-width: 280px;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.schedule-table th,
.schedule-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #e2e8f0;
  text-align: left;
}

.schedule-table th {
  background: #f1f5f9;
  color: var(--color-primary);
  font-weight: 600;
}

/* Tuition */
.tuition-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.tuition-card {
  background: #fff;
  padding: 1.5rem;
  border-radius: 12px;
  text-align: center;
  border: 2px solid #e2e8f0;
}

.tuition-card--highlight {
  border-color: var(--color-accent);
  background: #eff6ff;
}

.tuition-card h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.tuition-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.tuition-desc {
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* Apply form - 전환 강조 */
.apply-lead {
  margin-bottom: 1.5rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.apply-form {
  background: #fff;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(30, 58, 95, 0.1);
  max-width: 480px;
  margin: 0 auto;
}

.form-row {
  margin-bottom: 1.25rem;
}

.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: #334155;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 1rem;
  font-family: var(--font-sans);
  -webkit-appearance: none;
  appearance: none;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-row textarea {
  resize: vertical;
  min-height: 80px;
}

.btn--submit {
  width: 100%;
  padding: 1rem;
  background: var(--color-accent);
  color: #fff;
  font-size: 1.1rem;
  margin-top: 0.5rem;
}

.btn--submit:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.apply-success {
  margin-top: 1rem;
  padding: 1rem;
  background: #dcfce7;
  color: #166534;
  border-radius: 8px;
  font-weight: 500;
  text-align: center;
}

/* Naver */
.naver-booking-inner {
  text-align: center;
}

.naver-booking-inner p {
  margin-bottom: 1rem;
  color: var(--color-muted);
}

.btn--naver {
  background: var(--color-naver);
  color: #fff;
  padding: 1rem 2rem;
}

.btn--naver:hover {
  filter: brightness(1.05);
  transform: translateY(-2px);
}

.naver-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.review-card {
  background: #fff;
  padding: 1.5rem;
  border-radius: 12px;
  border-left: 4px solid var(--color-accent);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.review-card p {
  font-size: 0.95rem;
  color: #334155;
  margin-bottom: 0.75rem;
  font-style: italic;
}

.review-card footer {
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* Location */
.location-address {
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.location-note {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 1rem;
}

.map-wrap {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.map-placeholder {
  height: 240px;
  background: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* Footer */
.footer {
  padding: 1.25rem;
  text-align: center;
  background: #1e3a5f;
  color: rgba(255,255,255,0.9);
  font-size: 0.9rem;
}

.footer strong {
  color: #fff;
}

/* 카카오톡 상담 버튼 - 크게, 모바일 최적화 */
.kakao-float {
  position: fixed;
  bottom: calc(1rem + var(--safe-bottom));
  right: 1rem;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  background: var(--color-kakao);
  color: var(--color-kakao-text);
  text-decoration: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transition: transform 0.15s, box-shadow 0.15s;
}

.kakao-float:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
}

.kakao-icon {
  width: 28px;
  height: 28px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23191919'%3E%3Cpath d='M12 3c5.8 0 10.5 3.66 10.5 8.18 0 2.85-1.9 5.4-4.78 6.9l-.72.42-.6.84c-.36.5-.98.8-1.64.8H12l-.9 1.44-.58.92-.95.32c-2.4.8-5.18 1.26-8.03 1.26C3.2 22.98 0 19.32 0 14.8 0 10.28 3.7 6.62 8.5 6.62l.5-.02v-.6C9 3.66 10.2 3 12 3z'/%3E%3C/svg%3E") center/contain no-repeat;
}

.kakao-text {
  white-space: nowrap;
}

/* 데스크톱: 네비 표시, 카카오 버튼 유지 */
@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .nav.is-open {
    position: static;
    flex-direction: row;
    box-shadow: none;
    padding: 0;
  }

  .hero {
    padding: 4rem 2rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .kakao-float {
    padding: 1rem 1.5rem;
    font-size: 1.05rem;
  }

  .kakao-icon {
    width: 32px;
    height: 32px;
  }
}

@media (min-width: 480px) {
  .container {
    padding: 0 1.5rem;
  }
}