:root {
  --bg: #0a0a0f;
  --surface: #13131a;
  --card: #1a1a24;
  --border: #2a2a3a;
  --accent: #e8ff47;
  --accent2: #ff4747;
  --accent3: #47b8ff;
  --text: #f0f0f0;
  --muted: #888;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(232,255,71,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,255,71,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 0;
  position: relative;
  z-index: 1;
}

/* 헤더 */
header {
  text-align: center;
  margin-bottom: 50px;
}

.logo {
  font-family: 'Black Han Sans', sans-serif;
  font-size: clamp(48px, 10vw, 80px);
  letter-spacing: -2px;
  line-height: 1;
  color: var(--accent);
  text-shadow: 0 0 40px rgba(232,255,71,0.3);
  animation: flicker 4s infinite;
}

@keyframes flicker {
  0%, 95%, 100% { opacity: 1; }
  96% { opacity: 0.8; }
  97% { opacity: 1; }
  98% { opacity: 0.9; }
}

.subtitle {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-top: 8px;
}

/* 탭 */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 30px;
  background: var(--surface);
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.tab {
  flex: 1;
  padding: 12px;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border-radius: 9px;
  transition: all 0.2s;
  color: var(--muted);
  border: none;
  background: transparent;
  font-family: 'Noto Sans KR', sans-serif;
}

.tab.active {
  background: var(--accent);
  color: #000;
}

.tab:hover:not(.active) {
  color: var(--text);
  background: var(--border);
}

/* 섹션 */
.section { display: none; }
.section.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 폼 */
.form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
}

.form-title {
  font-family: 'Black Han Sans', sans-serif;
  font-size: 20px;
  margin-bottom: 24px;
  color: var(--accent);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.field label {
  display: block;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.field input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text);
  font-size: 15px;
  font-family: 'Noto Sans KR', sans-serif;
  transition: border-color 0.2s;
  outline: none;
}

.field input:focus {
  border-color: var(--accent);
}

.score-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: center;
  margin-bottom: 24px;
}

.vs-badge {
  font-family: 'Black Han Sans', sans-serif;
  font-size: 18px;
  color: var(--accent2);
  text-align: center;
}

.submit-btn {
  width: 100%;
  padding: 16px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  font-family: 'Noto Sans KR', sans-serif;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 1px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,255,71,0.25);
}

.submit-btn:active { transform: translateY(0); }

.toast {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  text-align: center;
}
.toast.success { background: rgba(71,255,71,0.1); border: 1px solid #47ff47; color: #47ff47; display: block; }
.toast.error { background: rgba(255,71,71,0.1); border: 1px solid var(--accent2); color: var(--accent2); display: block; }

/* 랭킹 */
.ranking-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.rank-tab {
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-family: 'Noto Sans KR', sans-serif;
  transition: all 0.2s;
  letter-spacing: 1px;
}

.rank-tab.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(232,255,71,0.05);
}

.rank-list { display: flex; flex-direction: column; gap: 8px; }

.rank-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform 0.2s;
  animation: slideIn 0.3s ease backwards;
}

.rank-item:hover { transform: translateX(4px); }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-12px); }
  to { opacity: 1; transform: translateX(0); }
}

.rank-num {
  font-family: 'Black Han Sans', sans-serif;
  font-size: 22px;
  min-width: 40px;
  text-align: center;
}

.rank-1 .rank-num { color: #ffd700; }
.rank-2 .rank-num { color: #c0c0c0; }
.rank-3 .rank-num { color: #cd7f32; }
.rank-other .rank-num { color: var(--muted); }

.rank-name {
  font-weight: 700;
  font-size: 16px;
  flex: 1;
}

.rank-value {
  font-family: 'Black Han Sans', sans-serif;
  font-size: 20px;
  color: var(--accent);
}

.rank-sub {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

/* 기록 */
.history-list { display: flex; flex-direction: column; gap: 8px; }

.history-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.history-date { color: var(--muted); font-size: 12px; min-width: 80px; }
.history-player { font-weight: 700; flex: 1; }
.history-score {
  font-family: 'Black Han Sans', sans-serif;
  font-size: 18px;
}
.win-score { color: var(--accent); }
.lose-score { color: var(--accent2); }

.loading {
  text-align: center;
  padding: 40px;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 2px;
}

.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}

.empty-icon { font-size: 40px; margin-bottom: 12px; }

/* 푸터 */
footer {
  position: relative;
  z-index: 1;
  margin-top: 60px;
  border-top: 1px solid var(--border);
  padding: 32px 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.footer-title {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.footer-content {
  font-size: 13px;
  color: #666;
  line-height: 1.8;
  white-space: pre-line;
}

@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
  .form-card { padding: 20px; }
}