/* home.css — 홈 페이지 전용 스타일 */

/* ─── ① HERO ────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: calc(100svh - var(--header-h));
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: var(--space-2xl) 0;
}

/* 배경 광원 */
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}

.hero__orb--purple {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124,111,205,0.18) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.hero__orb--gold {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(201,169,110,0.12) 0%, transparent 70%);
  bottom: -80px;
  left: -80px;
}

/* 장식 한자 그리드 */
.hero__chars {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(2, 1fr);
  padding: var(--space-xl);
  gap: var(--space-lg);
  opacity: 0.04;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 4rem);
  color: var(--color-primary);
  user-select: none;
  align-items: center;
  justify-items: center;
}

/* 콘텐츠 */
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.hero__badge {
  display: inline-block;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.hero__title {
  white-space: pre-line;
  margin-bottom: var(--space-lg);
  line-height: 1.15;
  color: var(--color-text);
}

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

.hero__desc {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-xl);
  max-width: 520px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

/* 통계 바 */
.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: fit-content;
}

.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.hero__stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.hero__stat-sep {
  width: 1px;
  height: 32px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* ─── ② QUICK INPUT ──────────────────────────────────── */
.quick-section {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.quick-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  position: relative;
  overflow: hidden;
}

.quick-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.quick-card__title {
  text-align: center;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
  font-size: clamp(1.1rem, 3vw, 1.4rem);
}

.quick-form__fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.form-field input,
.form-field select {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  color: var(--color-text);
  font-size: 1rem;
  min-height: 44px;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.form-field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a8696' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-field input:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(201,169,110,0.12);
}

/* 숫자 스피너 제거 */
.form-field input[type="number"]::-webkit-inner-spin-button,
.form-field input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
}
.form-field input[type="number"] { -moz-appearance: textfield; }

.quick-form__error {
  font-size: 0.875rem;
  color: var(--color-danger);
  margin-bottom: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(224,92,92,0.08);
  border-radius: var(--radius-sm);
}

.alert-warning {
  margin-bottom: var(--space-md);
}

.quick-form__btn {
  width: 100%;
  justify-content: center;
  font-size: 1.05rem;
  padding: 14px;
}

/* ─── ③ WHAT IS SAJU ─────────────────────────────────── */
.what-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

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

.what-card__icon {
  color: var(--color-primary);
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.what-card__title {
  color: var(--color-text);
  font-size: 1.15rem;
}

.what-card__desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
  flex: 1;
  margin-bottom: 0;
}

.what-card__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
  transition: gap var(--transition);
  margin-top: auto;
}

.what-card__link::after {
  content: '→';
  transition: transform var(--transition);
}

.what-card:hover .what-card__link::after {
  transform: translateX(4px);
}

/* ─── ④ FEATURES ─────────────────────────────────────── */
.feat-section {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.feat-title {
  white-space: pre-line;
}

.feat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.feat-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  grid-template-rows: auto 1fr;
  column-gap: var(--space-md);
  row-gap: 4px;
}

.feat-item__icon {
  grid-row: 1 / 3;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201,169,110,0.08);
  border: 1px solid rgba(201,169,110,0.2);
  border-radius: var(--radius-md);
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

.feat-item__title {
  color: var(--color-text);
  font-size: 1rem;
  align-self: end;
}

.feat-item__desc {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ─── ⑤ GAPJA PREVIEW ───────────────────────────────── */
.gapja-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.gapja-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md);
  cursor: default;
}

.gapja-card__chars {
  display: flex;
  gap: 4px;
  margin-bottom: var(--space-xs);
}

/* 천간 */
.gapja-card__gan,
.gapja-card__ji {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 6vw, 2.4rem);
  line-height: 1;
  font-weight: 700;
}

/* 오행별 색상 */
.gapja-card__gan--wood,
.gapja-card__ji--wood  { color: #5cba82; }   /* 목: 초록 */
.gapja-card__gan--fire,
.gapja-card__ji--fire  { color: #e05c5c; }   /* 화: 빨강 */
.gapja-card__gan--earth,
.gapja-card__ji--earth { color: #c9a96e; }   /* 토: 황금 */
.gapja-card__gan--metal,
.gapja-card__ji--metal { color: #a8b8cc; }   /* 금: 은백 */
.gapja-card__gan--water,
.gapja-card__ji--water { color: #7c9fd4; }   /* 수: 파랑 */

.gapja-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.gapja-card__name {
  font-size: 0.95rem;
  color: var(--color-text);
}

.gapja-card__elem {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  width: fit-content;
  margin-bottom: 0;
}

.gapja-card__desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.gapja-more {
  display: flex;
  justify-content: center;
}

/* ─── 푸터 개인정보 링크 ─────────────────────────────── */
.footer-privacy-link {
  text-decoration: underline;
  text-underline-offset: 2px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer-privacy-link:hover {
  color: var(--color-primary);
}

/* ─── 반응형: 태블릿 (768px+) ───────────────────────── */
@media (min-width: 768px) {
  /* Quick Input: 4열 */
  .quick-form__fields {
    grid-template-columns: repeat(4, 1fr);
  }

  .quick-card {
    padding: var(--space-xl) var(--space-2xl);
  }

  /* What Is Saju: 3열 */
  .what-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Features: 2열 */
  .feat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Gapja: 4열 */
  .gapja-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .gapja-card {
    padding: var(--space-lg);
  }

  .hero__inner {
    max-width: 700px;
  }
}

/* ─── 반응형: 데스크톱 (1024px+) ───────────────────── */
@media (min-width: 1024px) {
  /* Features: 4열 */
  .feat-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .feat-item {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
    gap: var(--space-sm);
  }

  .feat-item__icon {
    grid-row: auto;
    margin-bottom: var(--space-sm);
  }

  .feat-item__title {
    align-self: auto;
  }

  .hero__chars {
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(2, 1fr);
  }
}