/* 러브 비트 댄스 (Love Beat Dance) — 스타일시트 */
:root {
  --bg: #090d16;
  --panel-bg: rgba(15, 23, 42, 0.88);
  --border: rgba(255, 255, 255, 0.12);
  --pink: #ff3df1;
  --pink-glow: rgba(255, 61, 241, 0.4);
  --cyan: #00f5d4;
  --cyan-glow: rgba(0, 245, 212, 0.4);
  --yellow: #ffd700;
  --purple: #a855f7;
  --text: #f8fafc;
  --subtext: #94a3b8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  position: relative;
}

/* 좌상단 아케이드 홈 복귀 링크 */
.home-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 100;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  color: var(--subtext);
  padding: 7px 14px;
  border-radius: 99px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
}

.home-link:hover {
  color: #fff;
  border-color: var(--cyan);
  box-shadow: 0 0 12px var(--cyan-glow);
}

#appContainer {
  width: 100%;
  height: 100%;
  position: relative;
}

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.25s ease;
}

.hidden {
  display: none !important;
}

.screen.hidden {
  display: none !important;
}

/* ────────── 공용 버튼 ────────── */
.btn {
  background: #1e293b;
  border: 1px solid var(--border);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  padding: 12px 24px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.btn:active {
  transform: translateY(1px);
}

.btn.primary-neon {
  background: linear-gradient(135deg, #d946ef, #ec4899);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 20px var(--pink-glow);
}

.btn.primary-neon:hover {
  box-shadow: 0 6px 26px rgba(255, 61, 241, 0.6);
}

.btn.secondary-neon {
  background: rgba(30, 41, 59, 0.85);
  border-color: rgba(56, 189, 248, 0.4);
}

.btn.secondary-neon:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 16px var(--cyan-glow);
}

.btn.small {
  padding: 6px 14px;
  font-size: 13px;
  border-radius: 10px;
}

.btn.full-width {
  width: 100%;
}

.pulse {
  animation: pulseAnim 2s infinite;
}

@keyframes pulseAnim {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

/* ────────── 1. 타이틀 화면 ────────── */
#screenTitle {
  background: radial-gradient(circle at center, #1e1338 0%, #090d16 80%);
}

.title-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  max-width: 500px;
  padding: 24px;
}

.logo-badge {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--cyan);
  background: rgba(0, 245, 212, 0.12);
  padding: 4px 14px;
  border-radius: 99px;
  border: 1px solid rgba(0, 245, 212, 0.3);
}

.logo-title {
  font-size: 52px;
  font-weight: 900;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #ff4fa8, #ffd700, #00f5d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 24px rgba(255, 79, 168, 0.5));
}

.logo-sub {
  font-size: 14px;
  color: var(--subtext);
  line-height: 1.6;
}

.title-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  margin-top: 14px;
}

/* ────────── 2. 곡 및 캐릭터 선택 화면 ────────── */
#screenSelect {
  background: #090d16;
  padding: 20px;
}

.select-container {
  width: 100%;
  max-width: 860px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  max-height: 90vh;
}

.select-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.select-header h2 {
  font-size: 20px;
  font-weight: 900;
  color: #fff;
}

.select-body {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
  overflow: hidden;
}

@media (max-width: 720px) {
  .select-body {
    grid-template-columns: 1fr;
    overflow-y: auto;
  }
}

.section-title {
  font-size: 13px;
  font-weight: 800;
  color: var(--subtext);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.song-list-scroll {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 360px;
  overflow-y: auto;
  padding-right: 6px;
}

.song-card {
  background: #1e293b;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.song-card:hover {
  background: #273549;
  border-color: var(--song-color, var(--cyan));
}

.song-card.selected {
  background: rgba(30, 41, 59, 0.95);
  border-color: var(--song-color, var(--cyan));
  box-shadow: 0 0 16px rgba(0, 245, 212, 0.25);
  transform: translateX(4px);
}

.song-card-jacket {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.song-card-info {
  flex: 1;
  min-width: 0;
}

.song-card-title {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.song-card-sub {
  font-size: 12px;
  color: var(--subtext);
  margin-top: 2px;
}

.song-card-best {
  font-size: 11px;
  color: var(--yellow);
  font-weight: 700;
  margin-top: 2px;
}

/* 난이도 & 아바타 버튼 그룹 */
.diff-btn-group, .avatar-btn-group {
  display: flex;
  gap: 8px;
}

.diff-btn, .avatar-btn {
  flex: 1;
  background: #1e293b;
  border: 1px solid var(--border);
  color: var(--subtext);
  padding: 10px 8px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: all 0.15s ease;
}

.diff-btn.selected {
  border-color: var(--diff-color, #fff);
  color: #fff;
  background: rgba(30, 41, 59, 0.9);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.2);
}

.diff-badge {
  font-size: 11px;
  font-weight: 900;
}

.diff-name {
  font-size: 12px;
  font-weight: 800;
}

.avatar-btn.selected {
  border-color: var(--pink);
  color: #fff;
  box-shadow: 0 0 12px var(--pink-glow);
}

.avatar-icon {
  font-size: 20px;
}

.avatar-name {
  font-size: 12px;
  font-weight: 700;
}

.select-footer-actions {
  margin-top: 24px;
}

/* ────────── 3. 인게임 화면 ────────── */
#screenGame {
  position: relative;
  width: 100%;
  height: 100%;
  background: #000;
}

#gameCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.game-hud {
  position: absolute;
  top: 14px;
  left: 0;
  right: 0;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
}

.hud-left {
  margin-left: 110px;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.hud-song-title {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
}

.hud-song-info {
  font-size: 11px;
  color: var(--subtext);
}

.hud-center {
  text-align: center;
}

.hud-score {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -1px;
  color: #fff;
  text-shadow: 0 0 14px rgba(255, 255, 255, 0.4);
}

.hud-combo {
  font-size: 14px;
  font-weight: 800;
  color: var(--yellow);
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.fever-gauge-box {
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  padding: 8px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  min-width: 140px;
}

.fever-label {
  font-size: 11px;
  font-weight: 800;
  color: var(--subtext);
  margin-bottom: 4px;
  text-align: right;
}

.fever-label.active {
  color: var(--pink);
  animation: pulseAnim 0.8s infinite;
}

.gauge-bg {
  width: 100%;
  height: 8px;
  background: #1e293b;
  border-radius: 99px;
  overflow: hidden;
}

.gauge-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #d946ef, #ff3df1, #ffd700);
  transition: width 0.15s ease;
}

/* 모바일 터치 오버레이 */
.mobile-touch-hud {
  position: absolute;
  bottom: 120px;
  left: 0;
  right: 0;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  pointer-events: auto;
}

@media (min-width: 860px) {
  /* PC 데스크톱에서는 터치 HUD 숨김 처리 */
  .mobile-touch-hud {
    display: none;
  }
}

.dpad-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.dpad-row {
  display: flex;
  gap: 6px;
}

.touch-btn {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(30, 41, 59, 0.75);
  backdrop-filter: blur(8px);
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 22px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.1s;
}

.touch-btn:active {
  background: rgba(0, 245, 212, 0.5);
  border-color: var(--cyan);
  transform: scale(0.92);
}

.beat-btn {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f43f5e, #ff3df1);
  border: 3px solid #fff;
  color: #fff;
  font-size: 15px;
  font-weight: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  box-shadow: 0 6px 24px rgba(244, 63, 94, 0.5);
  cursor: pointer;
  transition: transform 0.1s;
}

.beat-btn:active {
  transform: scale(0.92);
  box-shadow: 0 2px 12px rgba(244, 63, 94, 0.8);
}

/* ────────── 4. 결과 화면 ────────── */
#screenResult {
  background: radial-gradient(circle at center, #1b0a2a 0%, #090d16 85%);
}

.result-card {
  width: 90%;
  max-width: 440px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 32px 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  position: relative;
}

.badge-new-record {
  position: absolute;
  top: -12px;
  background: var(--yellow);
  color: #052e16;
  font-size: 12px;
  font-weight: 900;
  padding: 4px 14px;
  border-radius: 99px;
  box-shadow: 0 4px 14px rgba(255, 215, 0, 0.5);
}

.result-header {
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--cyan);
}

.result-rank {
  font-size: 76px;
  font-weight: 900;
  line-height: 1;
  text-shadow: 0 0 24px currentColor;
  margin: 6px 0;
}

.rank-s { color: #ffd700; }
.rank-a { color: #00f5d4; }
.rank-b { color: #38bdf8; }
.rank-c { color: #fb923c; }
.rank-f { color: #94a3b8; }

.result-score {
  font-size: 32px;
  font-weight: 900;
  color: #fff;
}

.result-combo {
  font-size: 14px;
  font-weight: 800;
  color: var(--yellow);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  margin: 16px 0;
}

.res-stat-item {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px 4px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.res-stat-item span {
  font-size: 11px;
  font-weight: 800;
  color: var(--subtext);
}

.res-stat-item strong {
  font-size: 15px;
  font-weight: 900;
}

.res-stat-item.cool strong { color: var(--pink); }
.res-stat-item.perfect strong { color: var(--cyan); }
.res-stat-item.great strong { color: var(--yellow); }
.res-stat-item.good strong { color: #38bdf8; }
.res-stat-item.bad strong { color: #f97316; }
.res-stat-item.miss strong { color: #f43f5e; }

.result-actions {
  display: flex;
  gap: 10px;
  width: 100%;
}

.result-actions .btn {
  flex: 1;
}

/* ────────── 모달 오버레이 ────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
}

.modal-overlay.hidden {
  display: none !important;
}

.modal-box {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 26px;
  max-width: 420px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.modal-box h3 {
  font-size: 18px;
  font-weight: 900;
  color: #fff;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.setting-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 700;
}

.setting-tip {
  font-size: 11px;
  color: var(--subtext);
  line-height: 1.4;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--cyan);
}

.howto-content {
  font-size: 13px;
  color: var(--subtext);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.howto-content strong {
  color: #fff;
}

.pause-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}