/* ================================================================
   style.css — Walnut & Hanji 디자인 시스템
   어두운 월넛 목재 + 미색 한지의 프리미엄 톤
   각진 고가구 느낌의 카드와 명조체 타이포그래피
   ================================================================ */

/* ── 디자인 토큰 ───────────────────────────────────────────── */
:root {
  /* 월넛 목재 톤 */
  --walnut-deep:   #2A1810;
  --walnut-dark:   #3D2817;
  --walnut-mid:    #5C3D26;
  --walnut-light:  #8B6F4A;

  /* 한지 미색 톤 */
  --hanji-light:   #F8F1E0;
  --hanji-base:    #F0E6D2;
  --hanji-dark:    #E5D7B8;

  /* 황동 포인트 */
  --brass:         #B8956A;
  --brass-dark:    #8F6D3F;

  /* 기능색 */
  --kakao:         #FEE500;
  --kakao-text:    #3A1D1D;
  --red:           #8B2E2E;
  --green:         #4A6741;

  /* 호환성 — 기존 코드에서 참조되는 변수 */
  --paper:         var(--hanji-base);
  --paper-dark:    var(--hanji-dark);
  --paper-card:    var(--hanji-light);
  --ink:           var(--walnut-deep);
  --ink-sub:       var(--walnut-mid);
  --accent:        var(--walnut-mid);
  --accent-hover:  var(--walnut-dark);
  --border:        var(--walnut-light);

  /* 형태 — 각진 고가구 느낌 */
  --radius-sm:  2px;
  --radius-md:  4px;
  --radius-lg:  6px;

  /* 그림자 — 음각 + 가구 깊이 */
  --shadow-sm:  0 1px 2px rgba(42,24,16,.15);
  --shadow-md:  0 4px 12px rgba(42,24,16,.18);
  --shadow-lg:  0 12px 32px rgba(42,24,16,.25);
  --shadow-inset: inset 0 1px 0 rgba(248,241,224,.4), inset 0 -1px 0 rgba(42,24,16,.08);

  /* 타이포 */
  --font-serif: 'Noto Serif KR', 'Nanum Myeongjo', Batang, serif;
  --font-sans:  'Noto Sans KR', 'Malgun Gothic', sans-serif;

  --max-w: 1080px;
  --gap:   24px;
}

/* ── 기본 초기화 ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 17px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--hanji-base);
  background-image:
    radial-gradient(circle at 1px 1px, rgba(92,61,38,.04) 1px, transparent 0);
  background-size: 16px 16px;
  color: var(--walnut-deep);
  line-height: 1.75;
  min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: var(--walnut-mid); text-decoration: none; transition: color .15s; }
a:hover { color: var(--walnut-deep); text-decoration: underline; text-underline-offset: 3px; }

/* ── 레이아웃 ─────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* ── 헤더 — 어두운 월넛 ─────────────────────────────────── */
.site-header {
  background: var(--walnut-deep);
  background-image:
    linear-gradient(180deg, var(--walnut-dark) 0%, var(--walnut-deep) 100%);
  border-bottom: 2px solid var(--brass-dark);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--hanji-light);
  letter-spacing: .02em;
}
.site-logo:hover { color: var(--brass); text-decoration: none; }

.site-nav { display: flex; gap: 10px; align-items: center; }
.site-nav .btn-outline {
  color: var(--hanji-base);
  border-color: var(--walnut-light);
  background: transparent;
}
.site-nav .btn-outline:hover { background: var(--walnut-mid); color: var(--hanji-light); }

/* ── 푸터 — 월넛 ──────────────────────────────────────── */
.site-footer {
  background: var(--walnut-deep);
  color: var(--hanji-dark);
  border-top: 2px solid var(--brass-dark);
  padding: 48px 20px;
  text-align: center;
  font-size: .9rem;
}

.site-footer .logo {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--hanji-light);
  margin-bottom: 10px;
}
.site-footer p { color: var(--hanji-dark); opacity: .85; }

/* ── 버튼 — 각진 가구 모서리 ──────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all .15s ease;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: .01em;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-kakao {
  background: var(--kakao);
  color: var(--kakao-text);
  border-color: #d4be00;
  font-size: 1.05rem;
  min-height: 56px;
  padding: 0 36px;
  box-shadow: var(--shadow-sm);
}
.btn-kakao:hover { background: #f0d800; color: var(--kakao-text); box-shadow: var(--shadow-md); }

.btn-primary {
  background: var(--brass);
  color: var(--hanji-light);
  border-color: var(--brass-dark);
  box-shadow: var(--shadow-inset);
}
.btn-primary:hover { background: var(--brass-dark); color: var(--hanji-light); }

.btn-outline {
  background: transparent;
  color: var(--walnut-deep);
  border-color: var(--walnut-light);
}
.btn-outline:hover { background: var(--hanji-dark); color: var(--walnut-deep); }

.btn-danger {
  background: var(--red);
  color: var(--hanji-light);
  border-color: #6e2424;
}
.btn-danger:hover { background: #6e2424; color: var(--hanji-light); }

.btn-sm {
  min-height: 40px;
  padding: 0 18px;
  font-size: .9rem;
}

/* ── 카드 — 한지 + 가구 보더 ─────────────────────────── */
.card {
  background: var(--hanji-light);
  border: 1.5px solid var(--walnut-light);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

/* ── 입력 폼 ────────────────────────────────────────── */
input[type=text], input[type=number], input[type=email], textarea, select {
  width: 100%;
  padding: 12px 14px;
  background: var(--hanji-light);
  border: 1.5px solid var(--walnut-light);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--walnut-deep);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--brass);
  box-shadow: 0 0 0 3px rgba(184,149,106,.2);
}

/* ── 토스트 — 한지 ─────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--walnut-deep);
  color: var(--hanji-light);
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--brass-dark);
  font-size: .92rem;
  z-index: 999;
  opacity: 0;
  transition: all .3s;
  pointer-events: none;
  box-shadow: var(--shadow-lg);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── 뱃지 — 황동 ─────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--brass);
  color: var(--walnut-deep);
  font-weight: 700;
  font-size: 1.05rem;
  font-family: var(--font-serif);
  flex-shrink: 0;
  border: 1.5px solid var(--brass-dark);
  box-shadow: var(--shadow-inset);
}

/* ── 섹션 ────────────────────────────────────────── */
.section { padding: 80px 0; }
.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--walnut-deep);
  text-align: center;
  margin-bottom: 14px;
  letter-spacing: -.01em;
}
.section-sub {
  text-align: center;
  color: var(--walnut-mid);
  font-size: 1.05rem;
  margin-bottom: 52px;
  font-family: var(--font-serif);
}

/* 어두운 섹션 (CTA 등) */
.section-dark {
  background: var(--walnut-deep);
  background-image:
    linear-gradient(180deg, var(--walnut-dark) 0%, var(--walnut-deep) 100%);
  color: var(--hanji-light);
  border-top: 2px solid var(--brass-dark);
  border-bottom: 2px solid var(--brass-dark);
}
.section-dark .section-title { color: var(--hanji-light); }
.section-dark .section-sub { color: var(--hanji-dark); }

/* ── 그리드 ───────────────────────────────────────── */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
}

@media (max-width: 700px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .section-title { font-size: 1.5rem; }
  .container { padding: 0 16px; }
}

/* ── 가구 모서리 강조 ─────────────────────────────── */
.furniture-corners {
  position: relative;
}
.furniture-corners::before,
.furniture-corners::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--brass);
  pointer-events: none;
}
.furniture-corners::before { top: -2px; left: -2px; border-right: none; border-bottom: none; }
.furniture-corners::after { bottom: -2px; right: -2px; border-left: none; border-top: none; }

/* ── 구분선 ────────────────────────────────────── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--walnut-light), transparent);
  margin: 32px 0;
}