/* ═══════════════════════════════════════════════════
   LINEAGE CLASSIC TOOLS — COMMON DESIGN SYSTEM
   ═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;800&family=Noto+Serif+KR:wght@300;400;500;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── 색상 변수 ─────────────────────────────────────── */
:root {
  --bg-deep:        #0a0c0f;
  --bg-mid:         #10141a;
  --bg-card:        #141920;
  --bg-input:       #0d1117;
  --border:         #2a3240;
  --border-glow:    #c8952a;
  --gold:           #d4a843;
  --gold-light:     #f0c869;
  --gold-dim:       #7a5e20;
  --crystal:        #a8d4f0;
  --crystal-bright: #d0eeff;
  --silver:         #9ab0c8;
  --silver-dim:     #4a6070;
  --red:            #c84040;
  --green:          #40a870;
  --text-main:      #e8dcc8;
  --text-sub:       #8090a0;
  --text-faint:     #3a4858;
  --ruby:           #c8324a;
  --sapphire:       #2460c8;
  --nav-h:          56px;
  --glow-gold:      0 0 18px rgba(212,168,67,0.35);
  --glow-crystal:   0 0 18px rgba(168,212,240,0.25);
}

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

body {
  background: var(--bg-deep);
  color: var(--text-main);
  font-family: 'Noto Serif KR', serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── 배경 텍스처 ────────────────────────────────────── */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%,  rgba(212,168,67,0.04)  0%, transparent 70%),
    radial-gradient(ellipse 60% 60% at 80% 100%, rgba(36,96,200,0.04)   0%, transparent 60%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%232a3240' fill-opacity='0.22'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

/* ── 파티클 캔버스 ──────────────────────────────────── */
#particles { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

/* ═══════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  background: rgba(10,12,15,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
  opacity: 0.6;
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 0;
}

/* 로고 */
.nav-logo {
  font-family: 'Cinzel', serif;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-logo span {
  -webkit-text-fill-color: var(--text-faint);
  color: var(--text-faint);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 3px;
  margin-left: 8px;
  vertical-align: middle;
}

/* 구분선 */
.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 20px;
  flex-shrink: 0;
}

/* 메뉴 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-menu::-webkit-scrollbar { display: none; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 3px;
  text-decoration: none;
  color: var(--text-sub);
  font-size: 12px;
  letter-spacing: 0.5px;
  white-space: nowrap;
  transition: color 0.18s, background 0.18s;
  position: relative;
  border: 1px solid transparent;
}
.nav-item:hover {
  color: var(--text-main);
  background: rgba(255,255,255,0.04);
}
.nav-item.active {
  color: var(--gold-light);
  background: rgba(212,168,67,0.08);
  border-color: rgba(212,168,67,0.18);
}
.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 14px; right: 14px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  border-radius: 1px;
}
.nav-item.coming {
  opacity: 0.4;
  pointer-events: none;
}
.nav-icon { font-size: 13px; line-height: 1; }
.nav-badge {
  font-size: 8px;
  letter-spacing: 1px;
  padding: 1px 5px;
  border-radius: 2px;
  background: rgba(42,50,64,0.8);
  color: var(--text-faint);
  font-family: 'Cinzel', serif;
  border: 1px solid var(--border);
  margin-left: 2px;
}
.nav-badge.new {
  background: rgba(64,168,112,0.15);
  color: var(--green);
  border-color: rgba(64,168,112,0.3);
}

/* 모바일 햄버거 */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
  flex-shrink: 0;
}
.nav-hamburger span {
  display: block;
  width: 20px; height: 1.5px;
  background: var(--text-sub);
  border-radius: 1px;
  transition: all 0.2s;
}

/* 모바일 드로어 */
.nav-drawer {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: rgba(10,12,15,0.97);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px 16px;
  z-index: 99;
  flex-direction: column;
  gap: 4px;
  backdrop-filter: blur(12px);
}
.nav-drawer.open { display: flex; }
.nav-drawer .nav-item { padding: 10px 14px; }

@media (max-width: 640px) {
  .nav-menu    { display: none; }
  .nav-divider { display: none; }
  .nav-hamburger { display: flex; }
}

/* ═══════════════════════════════════════════════════
   PAGE LAYOUT
   ═══════════════════════════════════════════════════ */
.wrap {
  position: relative; z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 32px) 20px 80px;
}

/* ── 페이지 헤더 ─────────────────────────────────────── */
.page-header {
  text-align: center;
  padding: 32px 0 36px;
  position: relative;
}
.page-header::after {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 22px auto 0;
  animation: linePulse 3s ease-in-out infinite;
}
@keyframes linePulse {
  0%, 100% { opacity: 0.5; width: 260px; }
  50%       { opacity: 1;   width: 360px; }
}

.page-eyebrow {
  font-family: 'Cinzel', serif;
  font-size: 10px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 10px;
}
.page-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(20px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 50%, #a07830 100%);
  background-size: 800px 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  animation: shimmer 4s linear infinite;
}
@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position:  400px 0; }
}
.page-subtitle {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-sub);
  letter-spacing: 1px;
}

/* ═══════════════════════════════════════════════════
   COMMON COMPONENTS
   ═══════════════════════════════════════════════════ */

/* 카드 */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 28px 32px;
  margin-bottom: 20px;
  position: relative;
  transition: border-color 0.2s;
  animation: cardIn 0.4s ease both;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 20px; right: 20px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}
.card:hover { border-color: rgba(212,168,67,0.22); }
.card:nth-child(2) { animation-delay: 0.05s; }
.card:nth-child(3) { animation-delay: 0.10s; }
.card:nth-child(4) { animation-delay: 0.15s; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 섹션 타이틀 */
.section-title {
  font-family: 'Cinzel', serif;
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* 인풋 */
input[type="number"], input[type="text"], select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-main);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
  -moz-appearance: textfield;
}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }
input:focus, select:focus {
  border-color: var(--gold-dim);
  box-shadow: 0 0 0 2px rgba(212,168,67,0.10);
}
select option { background: var(--bg-mid); }

/* 필드 */
.field { display: flex; flex-direction: column; gap: 7px; }
.field label {
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--text-sub);
  text-transform: uppercase;
}
.field .hint {
  font-size: 11px;
  color: var(--text-faint);
  margin-top: 3px;
}

/* 그리드 */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
@media (max-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .card { padding: 20px 16px; }
}

/* 버튼 */
.btn-primary {
  display: block; width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, rgba(212,168,67,0.15), rgba(212,168,67,0.08));
  border: 1px solid var(--gold-dim);
  color: var(--gold-light);
  font-family: 'Cinzel', serif;
  font-size: 12px;
  letter-spacing: 4px;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: all 0.2s;
  margin-top: 20px;
  animation: btnGlow 2.4s ease-in-out infinite;
}
.btn-primary:hover {
  background: linear-gradient(135deg, rgba(212,168,67,0.25), rgba(212,168,67,0.15));
  box-shadow: var(--glow-gold);
  animation: none;
}
.btn-primary:active { transform: scale(0.99); }
@keyframes btnGlow {
  0%, 100% { box-shadow: 0 0 8px rgba(212,168,67,0.15); }
  50%       { box-shadow: 0 0 22px rgba(212,168,67,0.45), 0 0 40px rgba(212,168,67,0.1); }
}

/* 토글 그룹 */
.toggle-group { display: flex; border: 1px solid var(--border); border-radius: 3px; overflow: hidden; }
.toggle-btn {
  flex: 1; padding: 10px 12px;
  background: var(--bg-input); border: none;
  color: var(--text-sub); font-family: 'Noto Serif KR', serif;
  font-size: 13px; cursor: pointer; transition: all 0.2s;
  border-right: 1px solid var(--border);
}
.toggle-btn:last-child { border-right: none; }
.toggle-btn.active { background: rgba(212,168,67,0.12); color: var(--gold-light); font-weight: 700; }
.toggle-btn:hover:not(.active) { background: rgba(255,255,255,0.04); color: var(--text-main); }

/* 빈 상태 */
.empty-state {
  text-align: center; padding: 52px 20px;
  color: var(--text-faint); font-size: 13px;
  letter-spacing: 2px; font-family: 'Cinzel', serif;
}
.empty-state svg { margin-bottom: 16px; opacity: 0.18; }

/* 툴팁 */
.tip { position: relative; display: inline-block; cursor: help; color: var(--gold-dim); font-size: 11px; margin-left: 4px; }
.tip::after {
  content: attr(data-tip);
  position: absolute; bottom: 120%; left: 50%; transform: translateX(-50%);
  background: var(--bg-mid); border: 1px solid var(--border);
  color: var(--text-main); font-size: 11px; padding: 6px 10px;
  border-radius: 3px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
  font-family: 'Noto Serif KR', serif; z-index: 99;
}
.tip:hover::after { opacity: 1; }

/* 페이드인 */
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { animation: fadeIn 0.35s ease both; }

/* 효율 행 */
.eff-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0; border-bottom: 1px solid rgba(42,50,64,0.4); font-size: 13px;
}
.eff-row:last-child { border-bottom: none; }
.eff-label { color: var(--text-sub); }
.eff-val { font-family: 'JetBrains Mono', monospace; color: var(--crystal); }

/* 한글 숫자 색상 */
.korean-num { font-size: 12px; display: inline-flex; align-items: baseline; gap: 2px; flex-wrap: wrap; }
.k-jo   { color: #e0c0ff; font-weight: 600; }
.k-eok  { color: #80d0ff; font-weight: 600; }
.k-man  { color: var(--crystal); font-weight: 600; }
.k-il   { color: #a0c8e8; }
.k-unit { color: var(--text-sub); font-size: 10px; margin-right: 2px; }
.k-suffix { color: var(--text-faint); font-size: 10px; }
.k-zero { color: var(--text-faint); }

/* 태그 */
.tag-safe {
  display: inline-block; background: rgba(64,168,112,0.12); border: 1px solid rgba(64,168,112,0.3);
  color: var(--green); font-size: 9px; letter-spacing: 1.5px;
  padding: 2px 6px; border-radius: 2px; font-family: 'Cinzel', serif;
  margin-left: 6px; vertical-align: middle;
}
.tag-risk {
  display: inline-block; background: rgba(200,64,64,0.10); border: 1px solid rgba(200,64,64,0.25);
  color: var(--red); font-size: 9px; letter-spacing: 1.5px;
  padding: 2px 6px; border-radius: 2px; font-family: 'Cinzel', serif;
  margin-left: 6px; vertical-align: middle;
}

/* 푸터 */
footer {
  text-align: center; padding: 20px;
  color: var(--text-faint); font-size: 11px;
  letter-spacing: 2px; font-family: 'Cinzel', serif;
  position: relative; z-index: 1;
}

/* ═══════════════════════════════════════════════════
   PARTICLES JS (공통 함수 — common.js 에서 호출)
   ═══════════════════════════════════════════════════ */