/* ============================================================
   세온코더 (SEONCODER) — Components
   공통 UI 컴포넌트 15가지 (버튼, 네비, 카드, FAQ 등)
   ============================================================ */

/* ─────────────────────────────────────────────────────────────
   01. CTA 버튼 — Primary (액센트 민트 그린)
   ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 16px 32px;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  border: none;
}

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

.btn--primary:hover {
  background-color: var(--color-primary-hover);
  transform: scale(1.02);
}

.btn--primary:active {
  transform: scale(0.98);
}

/* ─────────────────────────────────────────────────────────────
   02. CTA 버튼 — Secondary (아웃라인 블루)
   ───────────────────────────────────────────────────────────── */
.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-bg-white);
}

/* ─────────────────────────────────────────────────────────────
   03. 버튼 사이즈 변형
   ───────────────────────────────────────────────────────────── */
.btn--sm {
  padding: 10px 20px;
  font-size: var(--text-small);
}

.btn--lg {
  padding: 20px 40px;
  font-size: var(--text-body-lg);
}

/* ─────────────────────────────────────────────────────────────
   04. 네비게이션 바 — 데스크톱
   ───────────────────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  height: 72px;
  background-color: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border-light);
  transition: var(--transition-fast);
}

.navbar.is-scrolled {
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.navbar__logo {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: var(--weight-black);
  color: var(--color-text-dark);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.navbar__logo span {
  color: var(--color-primary);
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.navbar__link {
  font-size: 15px;
  font-weight: var(--weight-medium);
  color: var(--color-text-dark);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
  transition: color 0.2s ease;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.2s ease;
}

.navbar__link:hover,
.navbar__link.is-active {
  color: var(--color-primary);
}

.navbar__link.is-active::after,
.navbar__link:hover::after {
  width: 100%;
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* 햄버거 아이콘 — 모바일 전용 */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 24px;
  height: 24px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.navbar__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-dark);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* ─────────────────────────────────────────────────────────────
   05. 모바일 메뉴 오버레이
   ───────────────────────────────────────────────────────────── */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background-color: var(--color-bg-dark);
  display: flex;
  flex-direction: column;
  padding: var(--space-lg) var(--container-padding-mobile);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-menu.is-open {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  margin-bottom: var(--space-2xl);
}

.mobile-menu__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 24px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu__cta {
  margin-bottom: var(--space-xl);
}

.mobile-menu__cta .btn {
  width: 100%;
  font-size: 18px;
  padding: 18px 32px;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-menu__link {
  font-size: 24px;
  font-weight: var(--weight-bold);
  color: var(--color-text-light);
  text-decoration: none;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border-dark);
  transition: color 0.2s ease;
}

.mobile-menu__link:hover {
  color: var(--color-accent);
}

/* ─────────────────────────────────────────────────────────────
   06. 플로팅 CTA — 모바일 전용
   ───────────────────────────────────────────────────────────── */
.floating-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-floating);
  height: 56px;
  background-color: var(--color-accent);
  color: var(--color-bg-dark);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  border: none;
  border-radius: 12px 12px 0 0;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: background-color 0.2s ease;
  text-align: center;
  text-decoration: none;
  align-items: center;
  justify-content: center;
}

.floating-cta:hover {
  background-color: var(--color-accent-hover);
}

/* ─────────────────────────────────────────────────────────────
   07. 카드 — 라이트 배경 위
   ───────────────────────────────────────────────────────────── */
.card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* ─────────────────────────────────────────────────────────────
   08. 카드 — 다크 배경 위
   ───────────────────────────────────────────────────────────── */
.card--dark {
  background-color: var(--color-bg-dark-secondary);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: none;
  transition: border-color 0.3s ease;
}

.card--dark:hover {
  border-color: var(--color-primary);
  transform: none;
  box-shadow: none;
}

/* ─────────────────────────────────────────────────────────────
   09. 데이터 강조 숫자
   ───────────────────────────────────────────────────────────── */
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.stat__number {
  font-family: var(--font-heading);
  font-size: 64px;
  font-weight: var(--weight-black);
  line-height: 1;
  color: var(--color-highlight);
  letter-spacing: -0.02em;
}

.stat__number--blue {
  color: var(--color-primary);
}

.stat__number--accent {
  color: var(--color-accent);
}

.stat__label {
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  color: var(--color-text-light-secondary);
  margin-top: var(--space-sm);
  line-height: var(--leading-normal);
}

.stat__label--dark {
  color: var(--color-text-dark-secondary);
}

/* ─────────────────────────────────────────────────────────────
   10. 비교 테이블
   ───────────────────────────────────────────────────────────── */
.compare-table {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-bg-dark-secondary);
  border: 1px solid var(--color-border-dark);
}

.compare-table table {
  width: 100%;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  font-size: var(--text-body);
  border-bottom: 1px solid var(--color-border-dark);
}

.compare-table th {
  font-weight: var(--weight-semibold);
  color: var(--color-text-light);
  background-color: rgba(255, 255, 255, 0.04);
}

.compare-table td {
  color: var(--color-text-light-secondary);
}

.compare-table td:first-child {
  text-align: left;
  font-weight: var(--weight-medium);
  color: var(--color-text-light);
}

.compare-table .col--highlight {
  color: var(--color-accent);
  background-color: rgba(0, 229, 160, 0.06);
}

.compare-table .col--highlight th {
  background-color: rgba(0, 229, 160, 0.1);
}

.compare-table tr:last-child td {
  border-bottom: none;
}

/* ─────────────────────────────────────────────────────────────
   11. 플랫폼 로고 그리드
   ───────────────────────────────────────────────────────────── */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-xl);
  align-items: center;
}

.platform-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  filter: grayscale(100%) opacity(0.5);
  transition: var(--transition-fast);
}

.platform-logo:hover {
  filter: grayscale(0%) opacity(1);
}

.platform-logo img {
  height: 100%;
  width: auto;
  object-fit: contain;
}

/* ─────────────────────────────────────────────────────────────
   12. 스텝 프로세스
   ───────────────────────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: calc(16.6% + 20px);
  right: calc(16.6% + 20px);
  height: 1px;
  background-color: var(--color-border-dark);
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-md);
}

.step__badge {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-text-light);
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.step__title {
  font-size: var(--text-h4);
  font-weight: var(--weight-semibold);
  color: var(--color-text-light);
}

.step__desc {
  font-size: var(--text-body);
  color: var(--color-text-light-secondary);
  line-height: var(--leading-normal);
}

.step__screenshot {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-dark);
  box-shadow: var(--shadow-xl);
  margin-top: var(--space-md);
}

/* ─────────────────────────────────────────────────────────────
   13. FAQ 아코디언
   ───────────────────────────────────────────────────────────── */
.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border-light);
}

.faq-item {
  border-bottom: 1px solid var(--color-border-light);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-xl) 0;
  font-size: 18px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-dark);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: var(--space-md);
  transition: color 0.2s ease;
}

.faq-item__question:hover,
.faq-item.is-open .faq-item__question {
  color: var(--color-primary);
}

.faq-item__icon {
  font-size: 24px;
  font-weight: var(--weight-regular);
  color: var(--color-primary);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
}

.faq-item.is-open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.is-open .faq-item__answer {
  max-height: 500px;
}

.faq-item__answer-inner {
  padding-bottom: var(--space-xl);
  font-size: var(--text-body);
  color: var(--color-text-dark-secondary);
  line-height: var(--leading-relaxed);
}

/* ── .faq__item 변형 (guide / pricing 페이지용 — BEM double underscore) */
.faq {
  border-top: 1px solid var(--color-border-light);
}

.faq__item {
  border-bottom: 1px solid var(--color-border-light);
}

.faq__question {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--space-xl) 0;
  font-size: 18px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-dark);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: var(--space-sm);
  transition: color 0.2s ease;
}

.faq__question:hover,
.faq__item.is-open .faq__question {
  color: var(--color-primary);
}

/* 배지 뒤 질문 텍스트가 flex-grow 가져가게 */
.faq__question > span:not([class]) {
  flex: 1;
}

.faq__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  margin-left: auto;
  transition: transform 0.3s ease;
}

.faq__item.is-open .faq__icon {
  transform: rotate(180deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease;
}

.faq__item.is-open .faq__answer {
  max-height: 600px;
}

.faq__answer p {
  padding-bottom: var(--space-xl);
  font-size: var(--text-body);
  color: var(--color-text-dark-secondary);
  line-height: var(--leading-relaxed);
}

/* ─────────────────────────────────────────────────────────────
   14. 블로그 카드
   ───────────────────────────────────────────────────────────── */
.blog-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  text-decoration: none;
  display: block;
}

.blog-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.blog-card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  background-color: var(--color-bg-light);
}

.blog-card__body {
  padding: var(--space-lg);
}

.blog-card__category {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-text-light);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.04em;
}

.blog-card__title {
  font-size: 20px;
  font-weight: var(--weight-bold);
  color: var(--color-text-dark);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-sm);
}

.blog-card__summary {
  font-size: var(--text-small);
  color: var(--color-text-dark-secondary);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-md);
}

.blog-card__date {
  font-size: var(--text-xs);
  color: #999999;
}

/* ─────────────────────────────────────────────────────────────
   15. 푸터
   ───────────────────────────────────────────────────────────── */
.footer {
  background-color: var(--color-bg-dark);
  padding: var(--space-3xl) 0 var(--space-xl);
  color: var(--color-text-light-secondary);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__logo {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: var(--weight-black);
  color: var(--color-text-light);
  display: block;
  margin-bottom: var(--space-md);
}

.footer__logo span {
  color: var(--color-primary);
}

.footer__tagline {
  font-size: var(--text-small);
  color: var(--color-text-light-secondary);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-lg);
}

.footer__col-title {
  font-size: var(--text-small);
  font-weight: var(--weight-semibold);
  color: var(--color-text-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--text-small);
  color: var(--color-text-light-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__link:hover {
  color: var(--color-text-light);
}

.footer__divider {
  height: 1px;
  background-color: var(--color-border-dark);
  margin-bottom: var(--space-lg);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__legal {
  font-size: var(--text-xs);
  color: #555555;
  line-height: var(--leading-relaxed);
}

.footer__social {
  display: flex;
  gap: var(--space-md);
}

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light-secondary);
  font-size: var(--text-small);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer__social-link:hover {
  border-color: var(--color-primary);
  color: var(--color-text-light);
}

/* ─── 공통 뱃지/태그 ────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
}

.badge--primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.badge--accent {
  background-color: rgba(0, 229, 160, 0.12);
  color: var(--color-accent);
}

.badge--highlight {
  background-color: rgba(255, 214, 0, 0.15);
  color: var(--color-highlight);
}

/* ─── 반응형 ────────────────────────────────────────────────── */
@media (max-width: 1023px) {
  .platform-grid { grid-template-columns: repeat(3, 1fr); }
  .footer__grid  { grid-template-columns: 1fr 1fr; gap: var(--space-2xl); }
  .steps         { grid-template-columns: 1fr; }
  .steps::before { display: none; }
}

@media (max-width: 767px) {
  /* 네비게이션 */
  .navbar { height: 60px; }
  .navbar__menu    { display: none; }
  .navbar__hamburger { display: flex; }
  .navbar__actions .btn--primary { padding: 10px 16px; font-size: var(--text-small); }

  /* 플로팅 CTA */
  .floating-cta { display: flex; }

  /* 푸터 */
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .footer__bottom { flex-direction: column; align-items: flex-start; }

  /* 데이터 숫자 */
  .stat__number { font-size: 40px; }

  /* 카드 패딩 */
  .card,
  .card--dark { padding: var(--space-md); }

  /* 비교 테이블 — 스크롤 가능하게 */
  .compare-table { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* 플랫폼 그리드 */
  .platform-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
}