/* ════════════════════════════════════════════
   NEON PULSE — UI 样式
   ════════════════════════════════════════════ */

:root{
  --bg:#07060e;
  --panel:rgba(255,255,255,.045);
  --panel-brd:rgba(255,255,255,.10);
  --fg:#f2f0ff;
  --muted:#9a95b8;
  --c1:#ff3d81;
  --c2:#8b5cff;
  --c3:#25e0ff;
  --c4:#ffe14d;
  --good:#5ce08a;
  --radius:14px;
  --sans:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}

html,body{height:100%}

body{
  background:var(--bg);
  color:var(--fg);
  font-family:var(--sans);
  overflow:hidden;
  user-select:none;
  -webkit-user-select:none;
  -webkit-tap-highlight-color:transparent;
  -webkit-font-smoothing:antialiased;
  overscroll-behavior:none;
  touch-action:manipulation;          /* 菜单里仍可正常滚动 */
}

/* 游戏中：完全接管触摸，禁止滚动/缩放/长按菜单，避免误操作打断对局 */
#screen-game{touch-action:none}
#game-canvas{touch-action:none;display:block}

#bg-canvas{position:fixed;inset:0;width:100%;height:100%;z-index:0}

#vignette{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(ellipse at 50% 0%,rgba(139,92,255,.10),transparent 55%),
    radial-gradient(ellipse at 50% 110%,rgba(255,61,129,.10),transparent 55%),
    radial-gradient(ellipse at center,transparent 40%,rgba(0,0,0,.72) 100%);
}

#app{position:relative;z-index:2;height:100%;width:100%}

/* ── screens ───────────────────────────── */
.screen{
  position:absolute;inset:0;
  display:none;
  flex-direction:column;
  opacity:0;
  transition:opacity .22s ease;
}
.screen.active{display:flex;opacity:1}

/* ── buttons ───────────────────────────── */
.btn{
  appearance:none;border:1px solid var(--panel-brd);
  background:var(--panel);
  color:var(--fg);
  padding:10px 20px;border-radius:11px;
  font-size:14px;font-weight:600;font-family:var(--sans);
  cursor:pointer;
  transition:.16s ease;
  backdrop-filter:blur(8px);
  white-space:nowrap;
}
.btn:hover{background:rgba(255,255,255,.11);border-color:rgba(255,255,255,.22);transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{
  background:linear-gradient(135deg,var(--c1),var(--c2));
  border-color:transparent;
  box-shadow:0 8px 28px -10px var(--c1);
}
.btn-primary:hover{box-shadow:0 12px 34px -8px var(--c1)}
.btn-ghost{background:transparent}
.btn-danger{border-color:rgba(255,61,129,.35);color:#ff8ab4}
.btn-danger:hover{background:rgba(255,61,129,.14)}
.btn-lg{padding:14px 20px;font-size:16px;width:100%;margin-top:4px}

.icon-btn{
  appearance:none;border:1px solid var(--panel-brd);
  background:rgba(0,0,0,.35);color:var(--fg);
  width:38px;height:38px;border-radius:10px;cursor:pointer;font-size:13px;
  backdrop-filter:blur(6px);
}
.icon-btn:hover{background:rgba(255,255,255,.12)}

.switch{
  appearance:none;border:1px solid var(--panel-brd);
  width:46px;height:26px;border-radius:999px;
  background:rgba(255,255,255,.07);position:relative;cursor:pointer;
  transition:.18s ease;flex:none;
}
.switch::after{
  content:"";position:absolute;top:2px;left:2px;
  width:20px;height:20px;border-radius:50%;
  background:#8b87a8;transition:.18s cubic-bezier(.4,1.5,.6,1);
}
.switch[data-on="1"]{background:linear-gradient(135deg,var(--c1),var(--c2));border-color:transparent}
.switch[data-on="1"]::after{transform:translateX(20px);background:#fff}

/* ── title ──────────────────────────────── */
#screen-title{align-items:center;justify-content:center}
.title-wrap{text-align:center;animation:rise .6s cubic-bezier(.2,.9,.3,1)}
.logo{
  font-size:clamp(46px,10vw,104px);
  font-weight:900;letter-spacing:-.03em;line-height:.95;
  display:flex;gap:.12em;justify-content:center;
}
.logo-a{
  background:linear-gradient(120deg,#fff,var(--c3) 60%,var(--c2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 28px rgba(37,224,255,.45));
}
.logo-b{
  background:linear-gradient(120deg,var(--c1),#ffb84d);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 28px rgba(255,61,129,.5));
}
.tagline{color:var(--muted);margin-top:14px;font-size:14px;letter-spacing:.18em}
.title-buttons{display:flex;gap:12px;justify-content:center;margin-top:38px;flex-wrap:wrap}
.title-buttons .btn{padding:13px 30px;font-size:15px}
.hint{color:#5f5b78;font-size:12px;margin-top:26px}

@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

/* ── bars ───────────────────────────────── */
.bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 22px;border-bottom:1px solid rgba(255,255,255,.06);
  flex:none;
}
.bar-title{font-weight:800;letter-spacing:.06em;font-size:16px}
.bar-right{min-width:76px;display:flex;justify-content:flex-end}

/* ── panels ─────────────────────────────── */
.panel{
  background:var(--panel);border:1px solid var(--panel-brd);
  border-radius:var(--radius);padding:18px;
  backdrop-filter:blur(10px);
}
.panel h3{
  font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--muted);
  text-transform:uppercase;margin-bottom:14px;
}

/* ── song list ──────────────────────────── */
.song-layout{flex:1;display:flex;gap:18px;padding:18px 22px 22px;min-height:0}
.song-list{flex:1;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;align-content:start;overflow-y:auto;padding-right:4px}
.song-side{width:308px;flex:none;display:flex;flex-direction:column;gap:14px;overflow-y:auto}

.song-card{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--panel-brd);cursor:pointer;
  padding:16px;min-height:132px;
  display:flex;flex-direction:column;justify-content:flex-end;
  transition:.18s ease;
}
.song-card::before{
  content:"";position:absolute;inset:0;opacity:.28;
  background:radial-gradient(120% 90% at 100% 0%,var(--sc1),transparent 60%),
             radial-gradient(90% 80% at 0% 100%,var(--sc2),transparent 62%);
}
.song-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(6,5,14,.92),rgba(6,5,14,.25));
}
.song-card:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.3)}
.song-card.sel{border-color:var(--c3);box-shadow:0 0 0 1px var(--c3),0 10px 34px -14px var(--c3)}
.song-card>*{position:relative;z-index:1}
.song-title{font-size:17px;font-weight:800;letter-spacing:.01em}
.song-sub{font-size:12px;color:var(--muted);margin-top:3px}
.song-tags{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.tag{
  font-size:10px;font-weight:700;letter-spacing:.08em;
  padding:3px 7px;border-radius:6px;
  background:rgba(255,255,255,.11);color:#d8d4ee;
}
.tag.bpm{background:rgba(37,224,255,.16);color:#7fe8ff}
.song-badge{
  position:absolute;top:12px;right:12px;z-index:2;
  font-size:10px;font-weight:800;padding:4px 8px;border-radius:7px;
  background:linear-gradient(135deg,var(--c3),var(--c2));color:#06050e;
}
.song-custom .song-badge{background:linear-gradient(135deg,var(--c4),var(--c1))}

/* ── fields ─────────────────────────────── */
.field{margin-bottom:16px}
.field:last-child{margin-bottom:0}
.field>label{
  display:block;font-size:12px;color:var(--muted);font-weight:600;
  margin-bottom:9px;letter-spacing:.04em;
}
.field .val{color:var(--c3);font-weight:800;font-variant-numeric:tabular-nums}
.field.row{display:flex;align-items:center;justify-content:space-between}
.field.row>label{margin-bottom:0}
.note{font-size:11px;color:#6f6a8a;margin-top:8px;line-height:1.6}
.note b{color:#a49ecb}

input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:4px;
  background:rgba(255,255,255,.13);border-radius:99px;outline:none;cursor:pointer;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:16px;height:16px;border-radius:50%;
  background:linear-gradient(135deg,var(--c1),var(--c2));
  box-shadow:0 0 0 4px rgba(139,92,255,.18);cursor:pointer;
}
input[type=range]::-moz-range-thumb{
  width:16px;height:16px;border:none;border-radius:50%;
  background:linear-gradient(135deg,var(--c1),var(--c2));cursor:pointer;
}

.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{
  appearance:none;border:1px solid var(--panel-brd);background:rgba(255,255,255,.05);
  color:var(--muted);padding:7px 13px;border-radius:9px;
  font-size:12px;font-weight:700;font-family:var(--sans);cursor:pointer;transition:.15s;
  font-variant-numeric:tabular-nums;
}
.chip:hover{background:rgba(255,255,255,.11);color:var(--fg)}
.chip.on{background:linear-gradient(135deg,var(--c1),var(--c2));color:#fff;border-color:transparent;box-shadow:0 5px 18px -8px var(--c1)}

/* ── best list ──────────────────────────── */
.best-list{display:flex;flex-direction:column;gap:8px}
.best-row{display:flex;align-items:center;justify-content:space-between;font-size:12px;padding:7px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.best-row:last-child{border:none}
.best-row .k{color:var(--muted);font-weight:600}
.best-row .v{font-weight:800;font-variant-numeric:tabular-nums}
.best-row .r{width:26px;height:26px;border-radius:7px;display:grid;place-items:center;font-size:11px;font-weight:900;background:rgba(255,255,255,.09)}
.empty{color:#5f5b78;font-size:12px;text-align:center;padding:14px 0}

/* ── settings / help ────────────────────── */
.settings-grid,.help-grid{
  flex:1;overflow-y:auto;padding:20px 22px 30px;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:14px;align-content:start;
}
.help-list{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:13px;color:#cfcbe4;line-height:1.65}
.help-list li{padding-left:14px;position:relative}
.help-list li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--c2)}
.help-list b{color:#fff}
.j-perfect{color:var(--c4)}.j-great{color:var(--c3)}
.j-good{color:var(--c1)}.j-miss{color:#ff5a5a}

/* ── game ───────────────────────────────── */
#screen-game{background:transparent}
#game-canvas{position:absolute;inset:0;width:100%;height:100%}

.game-topbar{
  position:absolute;top:0;left:0;right:0;height:46px;
  display:flex;align-items:center;gap:12px;padding:0 14px;pointer-events:none;z-index:3;
}
.game-topbar .icon-btn{pointer-events:auto}
.game-song{font-size:12px;color:rgba(255,255,255,.6);font-weight:600;letter-spacing:.05em}
.game-prog{flex:1;height:3px;background:rgba(255,255,255,.1);border-radius:99px;overflow:hidden;max-width:420px}
.game-prog i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--c3),var(--c1));transition:width .1s linear}

.game-hud-left{position:absolute;top:56px;left:18px;z-index:3;pointer-events:none}
.game-hud-right{position:absolute;top:56px;right:18px;z-index:3;pointer-events:none;text-align:right}
.hud-score label,.hud-acc label,.hud-combo label{display:block;font-size:9px;letter-spacing:.22em;color:rgba(255,255,255,.4);font-weight:700}
.hud-score b{font-size:26px;font-weight:900;font-variant-numeric:tabular-nums;text-shadow:0 2px 14px rgba(0,0,0,.7)}
.hud-acc{margin-top:8px}
.hud-acc b{font-size:15px;font-weight:800;color:var(--c3);font-variant-numeric:tabular-nums}
.hud-combo b{display:block;font-size:40px;font-weight:900;line-height:1;font-variant-numeric:tabular-nums;color:#fff;text-shadow:0 0 22px rgba(255,61,129,.6)}

.gauge{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(255,255,255,.09);z-index:3;pointer-events:none}
.gauge i{display:block;height:100%;width:70%;background:linear-gradient(90deg,var(--c3),var(--good));transition:width .18s ease}
.gauge i.low{background:linear-gradient(90deg,#ff9d3d,var(--c1))}
.gauge i.crit{background:linear-gradient(90deg,#ff3b3b,#ff8a3b)}

.countdown{
  position:absolute;inset:0;display:grid;place-items:center;
  font-size:110px;font-weight:900;z-index:4;pointer-events:none;
  color:#fff;text-shadow:0 0 50px rgba(139,92,255,.8);
}

/* ── overlay ────────────────────────────── */
.overlay{
  position:absolute;inset:0;z-index:10;display:none;
  align-items:center;justify-content:center;
  background:rgba(4,3,10,.76);backdrop-filter:blur(10px);
}
.overlay.show{display:flex}
.overlay-card,.calib-card{
  background:rgba(18,16,32,.9);border:1px solid var(--panel-brd);
  border-radius:20px;padding:30px 34px;text-align:center;
  min-width:340px;animation:rise .3s cubic-bezier(.2,.9,.3,1);
}
.overlay-card h2,.calib-card h2{font-size:24px;margin-bottom:6px;font-weight:900}
.overlay-btns{display:flex;gap:10px;justify-content:center;margin-top:22px;flex-wrap:wrap}
.muted{color:var(--muted);font-size:13px;line-height:1.6}

/* ── result ─────────────────────────────── */
#screen-result{align-items:center;justify-content:center;padding:24px}
.result-card{
  width:min(880px,100%);max-height:100%;overflow-y:auto;
  background:rgba(16,14,30,.82);border:1px solid var(--panel-brd);
  border-radius:22px;padding:26px 28px;backdrop-filter:blur(16px);
  animation:rise .4s cubic-bezier(.2,.9,.3,1);
}
.result-head{display:flex;align-items:center;gap:20px;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.08)}
.result-rank{
  font-size:56px;font-weight:900;width:92px;height:92px;flex:none;
  display:grid;place-items:center;border-radius:20px;
  background:linear-gradient(135deg,var(--c1),var(--c2));
  box-shadow:0 14px 40px -14px var(--c1);
  animation:pop .55s cubic-bezier(.2,1.6,.4,1) .15s both;
}
@keyframes pop{from{transform:scale(.3);opacity:0}to{transform:scale(1);opacity:1}}
.result-meta{flex:1;min-width:0}
.result-meta h2{font-size:21px;font-weight:800;margin-bottom:3px}
.result-flags{display:flex;gap:6px;margin-top:9px;flex-wrap:wrap}
.flag{font-size:10px;font-weight:800;padding:4px 8px;border-radius:6px;letter-spacing:.08em}
.flag.fc{background:linear-gradient(135deg,var(--c4),#ff9d3d);color:#2a1400}
.flag.ap{background:linear-gradient(135deg,var(--c3),var(--c2));color:#04021a}
.result-score{text-align:right;flex:none}
.result-score label{display:block;font-size:9px;letter-spacing:.2em;color:var(--muted);font-weight:700}
.result-score b{display:block;font-size:30px;font-weight:900;font-variant-numeric:tabular-nums;line-height:1.15}
.result-score small{font-size:11px;color:var(--c3);font-weight:700}

.result-body{display:flex;gap:24px;padding:20px 0;flex-wrap:wrap}
.result-chart{flex:none;display:grid;grid-template-columns:74px 1fr 38px;gap:9px 12px;align-content:start;width:300px}
.jd{font-size:12px;font-weight:800;letter-spacing:.1em;display:flex;align-items:center;gap:7px}
.jd i{width:8px;height:8px;border-radius:50%;flex:none}
.jb{height:9px;background:rgba(255,255,255,.07);border-radius:99px;overflow:hidden;align-self:center}
.jb i{display:block;height:100%;width:0;border-radius:99px;transition:width .7s cubic-bezier(.2,.9,.3,1)}
.jn{font-size:12px;color:var(--fg);font-weight:800;text-align:right;font-variant-numeric:tabular-nums}

.result-stats{flex:1;display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:12px;align-content:start}
.stat{background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.07);border-radius:11px;padding:12px 14px}
.stat label{display:block;font-size:9px;letter-spacing:.16em;color:var(--muted);font-weight:700}
.stat b{display:block;font-size:19px;font-weight:900;margin-top:4px;font-variant-numeric:tabular-nums}
.result-btns{display:flex;gap:12px;justify-content:center;padding-top:6px}

/* ── calibration ────────────────────────── */
#screen-calib{align-items:center;justify-content:center}
.calib-beat{
  width:120px;height:120px;margin:26px auto 14px;border-radius:50%;
  border:3px solid rgba(255,255,255,.14);display:grid;place-items:center;
  font-size:52px;font-weight:900;color:transparent;transition:.08s ease;
}
.calib-beat.hit{background:linear-gradient(135deg,var(--c3),var(--c2));border-color:transparent;color:#04021a;transform:scale(1.14)}
.calib-count{font-size:13px;color:var(--muted);font-weight:700;letter-spacing:.1em}
.calib-meta{display:flex;gap:26px;justify-content:center;margin-top:16px;font-size:12px;color:var(--muted)}
.calib-meta b{color:var(--c3);font-variant-numeric:tabular-nums}

/* ── scrollbar ──────────────────────────── */
::-webkit-scrollbar{width:7px;height:7px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.13);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.24)}

/* ── responsive ─────────────────────────── */
@media (max-width:940px){
  .song-layout{flex-direction:column;overflow-y:auto}
  .song-side{width:100%;overflow:visible}
  .song-list{overflow:visible}
}
@media (max-width:640px){
  .result-head{flex-wrap:wrap}
  .result-rank{width:68px;height:68px;font-size:40px}
  .result-body{flex-direction:column}
  .result-chart{width:100%}
}


/* ═══════════════ 触屏适配 ═══════════════ */

/* 点按目标不小于 44px（iOS HIG / Material 建议值） */
@media (pointer:coarse){
  .btn{padding:13px 20px;min-height:46px}
  .chip{padding:10px 15px;min-height:42px}
  .icon-btn{width:46px;height:46px}
  .switch{width:54px;height:32px}
  .switch::after{width:26px;height:26px}
  .switch[data-on="1"]::after{transform:translateX(22px)}
  input[type=range]{height:26px;background:transparent}
  input[type=range]::-webkit-slider-thumb{width:24px;height:24px}
  input[type=range]::-moz-range-thumb{width:24px;height:24px}
}

/* 触摸模式下 HUD 元素加大、避让刘海 */
body.touch-mode .game-hud-left{left:14px;top:58px}
body.touch-mode .game-hud-right{right:14px;top:58px}
body.touch-mode .hud-combo b{font-size:52px}
body.touch-mode .hud-score b{font-size:30px}
body.touch-mode .bar{padding:12px 14px}
body.touch-mode .song-layout,
body.touch-mode .settings-grid,
body.touch-mode .help-grid{padding:14px 12px 26px}

/* 安全区（刘海 / home indicator） */
@supports (padding:max(0px)){
  .game-topbar{padding-top:max(10px,env(safe-area-inset-top));padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}
  .gauge{height:max(4px,env(safe-area-inset-bottom));bottom:0}
  .bar{padding-top:max(12px,env(safe-area-inset-top))}
}

/* 横屏手机：压缩纵向留白 */
@media (max-height:520px){
  .game-hud-left{top:48px}
  .game-hud-right{top:48px}
  .hud-combo b{font-size:30px}
  .hud-score b{font-size:22px}
  .result-card{padding:16px 18px}
  .settings-grid,.help-grid{padding-top:12px}
}

/* 窄屏结算页收紧 */
@media (max-width:520px){
  .result-chart{grid-template-columns:64px 1fr 34px;width:100%}
  .result-rank{width:64px;height:64px;font-size:38px;border-radius:16px}
  .result-score b{font-size:24px}
  .title-buttons{flex-direction:column;width:min(280px,86vw);margin-left:auto;margin-right:auto}
}