/* DEVDH Labs — Custom CSS */

/* ── 폰트 기본값 ──────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, sans-serif; }

/* ── Navbar 링크 ──────────────────────────────────── */
.nav-link {
  color: #6e6e73;
  transition: color .2s;
  position: relative;
  padding-bottom: 2px;
}
.nav-link:hover { color: #1d1d1f; }
.dark .nav-link:hover { color: #f5f5f7; }
.nav-link.nav-active { color: #1d1d1f; font-weight: 600; }
.dark .nav-link.nav-active { color: #f5f5f7; }

.mobile-nav-link {
  display: block;
  padding: .6rem .5rem;
  border-radius: .5rem;
  font-size: .95rem;
  color: #6e6e73;
  transition: background .15s, color .15s;
}
.mobile-nav-link:hover { background: rgba(0,0,0,.05); color: #1d1d1f; }
.dark .mobile-nav-link:hover { background: rgba(255,255,255,.08); color: #f5f5f7; }
.mobile-nav-link.nav-active { color: #1d1d1f; font-weight: 600; }
.dark .mobile-nav-link.nav-active { color: #f5f5f7; }

/* ── 버튼 ─────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  background: #0071e3;
  color: #fff;
  font-size: .9rem;
  font-weight: 600;
  padding: .65rem 1.5rem;
  border-radius: 9999px;
  transition: background .2s, transform .15s;
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary:hover { background: #0077ed; transform: translateY(-1px); }
.btn-primary:active { transform: none; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  background: transparent;
  color: #0071e3;
  border: 1.5px solid #0071e3;
  font-size: .9rem;
  font-weight: 600;
  padding: .65rem 1.5rem;
  border-radius: 9999px;
  transition: background .2s, color .2s, transform .15s;
  white-space: nowrap;
  text-decoration: none;
}
.btn-secondary:hover { background: #0071e3; color: #fff; transform: translateY(-1px); }
.btn-secondary:active { transform: none; }

/* ── 배지 ─────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: .2rem .7rem;
  border-radius: 9999px;
  background: rgba(0,113,227,.1);
  color: #0071e3;
}
.dark .badge { background: rgba(0,113,227,.2); color: #60a5fa; }

/* ── 카드 ─────────────────────────────────────────── */
.card {
  background: #fff;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 1.25rem;
  padding: 2rem;
  transition: box-shadow .2s, transform .2s;
}
.dark .card { background: #1d1d1f; border-color: rgba(255,255,255,.08); }
.card:hover { box-shadow: 0 12px 32px rgba(0,0,0,.08); transform: translateY(-3px); }
.dark .card:hover { box-shadow: 0 12px 32px rgba(0,0,0,.3); }

/* ── 섹션 공통 ────────────────────────────────────── */
.section { padding: 6rem 0; }
.section-sm { padding: 4rem 0; }
.container { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }

/* ── Scroll Reveal ────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
[data-reveal].revealed { opacity: 1; transform: none; }
[data-reveal][data-delay="100"] { transition-delay: .1s; }
[data-reveal][data-delay="200"] { transition-delay: .2s; }
[data-reveal][data-delay="300"] { transition-delay: .3s; }
[data-reveal][data-delay="400"] { transition-delay: .4s; }
[data-reveal][data-delay="500"] { transition-delay: .5s; }

/* ── 비교 테이블 ──────────────────────────────────── */
.comparison-table { width: 100%; border-collapse: collapse; }
.comparison-table th,
.comparison-table td { padding: .85rem 1rem; text-align: left; border-bottom: 1px solid rgba(0,0,0,.07); font-size: .9rem; }
.dark .comparison-table th,
.dark .comparison-table td { border-color: rgba(255,255,255,.07); }
.comparison-table thead th { font-size: .75rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: #6e6e73; }
.comparison-table tbody td:first-child { color: #6e6e73; }
.comparison-table .col-hijack { color: #0071e3; font-weight: 600; }
.dark .comparison-table .col-hijack { color: #60a5fa; }

/* ── FAQ 아코디언 ─────────────────────────────────── */
.accordion-item { border-bottom: 1px solid rgba(0,0,0,.08); }
.dark .accordion-item { border-color: rgba(255,255,255,.08); }
.accordion-btn {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; padding: 1.1rem 0; text-align: left;
  font-size: .95rem; font-weight: 600; cursor: pointer;
  background: none; border: none; color: inherit;
}
.accordion-btn svg { transition: transform .3s; flex-shrink: 0; color: #6e6e73; }
.accordion-btn[aria-expanded="true"] svg { transform: rotate(180deg); }
.accordion-body {
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  font-size: .9rem; color: #6e6e73; line-height: 1.75;
}
.dark .accordion-body { color: #a1a1a6; }
.accordion-body.open { max-height: 500px; padding-bottom: 1.1rem; }

/* ── 문의 폼 ──────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-label { font-size: .85rem; font-weight: 600; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: .7rem 1rem;
  border-radius: .75rem;
  border: 1.5px solid rgba(0,0,0,.12);
  background: #fff;
  font-size: .9rem;
  font-family: inherit;
  color: #1d1d1f;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.dark .form-input, .dark .form-select, .dark .form-textarea {
  background: #1d1d1f;
  border-color: rgba(255,255,255,.12);
  color: #f5f5f7;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: #0071e3;
  box-shadow: 0 0 0 3px rgba(0,113,227,.15);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%236e6e73' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }

/* ── 인쇄 제외 ────────────────────────────────────── */
@media print { #site-header, #mobile-menu { display: none !important; } }