/* ============ GridPop — original visual design ============ */
:root{
  --bg1:#6a4fd0; --bg2:#3b2a8f;
  --panel:rgba(22,16,54,.92);
  --panel-soft:rgba(255,255,255,.10);
  --text:#ffffff; --text-dim:rgba(255,255,255,.62);
  --accent:#ffd93d; --accent2:#4dd6ff;
  --danger:#ff5c7a;
  --radius:18px;
  font-size:16px;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:radial-gradient(120% 90% at 50% 0%, var(--bg1) 0%, var(--bg2) 72%) fixed;
  color:var(--text);
  overflow:hidden;
  overscroll-behavior:none;
  user-select:none;-webkit-user-select:none;
  touch-action:manipulation;
}
.hidden{display:none !important}

#app{
  height:100dvh;
  max-width:520px;margin:0 auto;
  display:flex;flex-direction:column;align-items:stretch;
  position:relative;
}

/* ============ HUD ============ */
#hud{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px 2px;min-height:58px;
}
#hud-center{text-align:center;flex:1}
#hud-score{
  font-size:2rem;font-weight:900;letter-spacing:.02em;line-height:1;
  text-shadow:0 3px 12px rgba(0,0,0,.35);
  transition:transform .12s ease;
}
#hud-score.bump{transform:scale(1.18)}
#hud-sub{display:flex;gap:10px;justify-content:center;font-size:.7rem;font-weight:700;color:var(--text-dim);letter-spacing:.08em}
#hud-combo{
  position:absolute;right:14px;top:14px;
  background:linear-gradient(135deg,var(--accent),#ff9f43);
  color:#3a2400;font-weight:900;font-size:.85rem;
  padding:6px 10px;border-radius:999px;
  animation:combo-pop .25s ease;
  box-shadow:0 4px 14px rgba(255,180,0,.45);
}
@keyframes combo-pop{0%{transform:scale(.4)}70%{transform:scale(1.15)}100%{transform:scale(1)}}
.icon-btn{
  width:42px;height:42px;border-radius:14px;border:none;cursor:pointer;
  background:var(--panel-soft);color:var(--text);font-size:1rem;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.icon-btn:active{transform:scale(.92)}

/* ============ power-ups ============ */
#powerbar{
  display:flex;gap:8px;align-items:center;justify-content:center;
  padding:4px 14px 6px;
}
.pw{
  position:relative;border:none;cursor:pointer;
  width:58px;padding:6px 0 4px;border-radius:14px;
  background:var(--panel-soft);color:var(--text);
  display:flex;flex-direction:column;align-items:center;gap:1px;
  opacity:.45;transition:opacity .15s, box-shadow .15s, transform .1s;
}
.pw.has{opacity:1}
.pw.armed{box-shadow:0 0 0 2.5px var(--accent), 0 4px 16px rgba(255,217,61,.4);transform:translateY(-2px)}
.pw-ic{font-size:1.15rem;line-height:1.2}
.pw-label{font-size:.55rem;font-weight:700;letter-spacing:.06em;color:var(--text-dim);text-transform:uppercase}
.pw-n{
  position:absolute;top:-5px;right:-4px;
  background:var(--accent);color:#3a2400;font-size:.62rem;font-weight:900;
  min-width:17px;height:17px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;padding:0 4px;
}
.pw:not(.has) .pw-n{display:none}
#pw-progress{
  width:44px;height:8px;border-radius:99px;background:var(--panel-soft);overflow:hidden;margin-left:2px;
}
#pw-progress-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--accent2),var(--accent));border-radius:99px;transition:width .3s ease}

/* ============ canvas ============ */
#canvas-wrap{
  flex:1;display:flex;align-items:flex-start;justify-content:center;position:relative;
  min-height:0;
}
#game{touch-action:none;display:block}
#stuck-banner{
  position:absolute;left:50%;top:32%;transform:translateX(-50%);
  background:var(--panel);border-radius:var(--radius);
  padding:16px 22px;text-align:center;
  box-shadow:0 12px 40px rgba(0,0,0,.5);
  animation:rise .3s ease;z-index:5;width:min(84%,300px);
}
.stuck-title{font-weight:900;font-size:1.15rem;color:var(--danger)}
.stuck-sub{font-size:.8rem;color:var(--text-dim);margin:6px 0 12px}
@keyframes rise{from{opacity:0;transform:translateX(-50%) translateY(14px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

/* ============ ad slot ============ */
#ad-slot{
  height:58px;flex:none;margin:4px 12px 10px;
  border-radius:12px;border:1.5px dashed rgba(255,255,255,.22);
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.35);font-size:.68rem;font-weight:700;letter-spacing:.15em;
}

/* ============ screens ============ */
.screen{
  position:absolute;inset:0;z-index:10;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:18px;padding:20px;
}
#screen-start{
  background:radial-gradient(120% 90% at 50% 0%, var(--bg1) 0%, var(--bg2) 72%);
  overflow-y:auto;justify-content:flex-start;padding-top:max(6vh,34px);
}
.overlay{background:rgba(10,6,32,.62);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}

.logo{text-align:center;position:relative;margin-bottom:4px}
.logo h1{font-size:3rem;font-weight:900;letter-spacing:-.02em;text-shadow:0 6px 24px rgba(0,0,0,.4)}
.logo h1 em{font-style:normal;color:var(--accent)}
.tagline{color:var(--text-dim);font-size:.8rem;font-weight:700;letter-spacing:.35em;text-transform:uppercase;margin-top:2px}
.logo-block{position:absolute;width:20px;height:20px;border-radius:6px;animation:float 3.2s ease-in-out infinite}
.logo-block.b1{background:#ff5c7a;left:-26px;top:-8px;animation-delay:0s}
.logo-block.b2{background:#4dd6ff;right:-28px;top:4px;animation-delay:.9s}
.logo-block.b3{background:#6bcb77;left:8px;bottom:-16px;width:14px;height:14px;border-radius:5px;animation-delay:1.7s}
@keyframes float{0%,100%{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-9px) rotate(6deg)}}

.mode-cards{display:flex;gap:14px;width:100%;max-width:420px}
.mode-card{
  flex:1;border:none;cursor:pointer;text-align:left;
  background:var(--panel-soft);border-radius:var(--radius);
  padding:18px 16px;color:var(--text);
  display:flex;flex-direction:column;gap:4px;
  transition:transform .12s ease, background .15s;
  box-shadow:0 8px 28px rgba(0,0,0,.22);
}
.mode-card:hover{background:rgba(255,255,255,.16)}
.mode-card:active{transform:scale(.96)}
.mode-name{font-size:1.25rem;font-weight:900}
.mode-grid-tag{
  align-self:flex-start;background:var(--accent);color:#3a2400;
  font-size:.68rem;font-weight:900;padding:3px 9px;border-radius:999px;margin:2px 0;
}
.mode-desc{font-size:.74rem;color:var(--text-dim);font-weight:600}
.mode-best{font-size:.72rem;font-weight:800;color:var(--accent2);margin-top:6px}

.daily-card{
  width:100%;max-width:420px;border:none;cursor:pointer;
  background:linear-gradient(120deg,rgba(255,217,61,.2),rgba(77,214,255,.16));
  border:1.5px solid rgba(255,217,61,.4);
  border-radius:var(--radius);padding:14px 18px;color:var(--text);
  display:flex;align-items:center;gap:12px;
  transition:transform .12s ease;
}
.daily-card:active{transform:scale(.97)}
.daily-ic{font-size:1.5rem;color:var(--accent)}
.daily-txt{flex:1;text-align:left;display:flex;flex-direction:column}
.daily-txt b{font-size:1rem;font-weight:900}
.daily-txt small{font-size:.72rem;color:var(--text-dim);font-weight:600}
.daily-best{font-size:.75rem;font-weight:800;color:var(--accent)}

.start-nav{display:flex;gap:10px;width:100%;max-width:420px;justify-content:center;margin-top:2px}
.nav-btn{
  flex:1;max-width:96px;border:none;cursor:pointer;
  background:var(--panel-soft);border-radius:14px;padding:10px 4px 8px;
  color:var(--text);font-size:1.15rem;
  display:flex;flex-direction:column;align-items:center;gap:2px;
}
.nav-btn small{font-size:.62rem;font-weight:700;color:var(--text-dim);letter-spacing:.05em}
.nav-btn:active{transform:scale(.94)}

/* ============ panels ============ */
.panel{
  background:var(--panel);border-radius:24px;
  padding:26px 24px;width:min(92vw,380px);
  display:flex;flex-direction:column;gap:12px;
  box-shadow:0 20px 60px rgba(0,0,0,.5);
  animation:panel-in .22s ease;
  max-height:86dvh;overflow-y:auto;
}
.panel-tall{width:min(92vw,420px)}
@keyframes panel-in{from{opacity:0;transform:scale(.92) translateY(12px)}to{opacity:1;transform:none}}
.panel h2{font-size:1.5rem;font-weight:900;text-align:center}
.panel h3{font-size:.85rem;font-weight:800;color:var(--text-dim);letter-spacing:.06em;text-transform:uppercase;margin-top:6px}
.panel-hint{font-size:.76rem;color:var(--text-dim);text-align:center}

.btn{
  border:none;cursor:pointer;border-radius:14px;
  padding:13px 18px;font-size:1rem;font-weight:800;
  background:var(--panel-soft);color:var(--text);
  transition:transform .1s ease;
}
.btn:active{transform:scale(.96)}
.btn-primary{background:linear-gradient(135deg,var(--accent),#ffb01f);color:#3a2400;box-shadow:0 6px 20px rgba(255,190,20,.4)}
.btn-ghost{background:transparent;color:var(--text-dim)}
.btn-small{padding:9px 14px;font-size:.85rem}
.btn-danger-armed{background:var(--danger) !important;color:#fff !important}

/* game over */
.over-score{font-size:3.2rem;font-weight:900;text-align:center;line-height:1;text-shadow:0 4px 18px rgba(0,0,0,.4)}
.newbest{
  text-align:center;color:var(--accent);font-weight:900;letter-spacing:.2em;font-size:.85rem;
  animation:combo-pop .4s ease;
}
.over-rows{display:flex;flex-direction:column;gap:6px;margin:4px 0}
.over-row{display:flex;justify-content:space-between;font-size:.9rem;color:var(--text-dim);font-weight:600}
.over-row b{color:var(--text);font-weight:800}
.pause-stats{text-align:center;font-size:.85rem;color:var(--text-dim);font-weight:600}

/* scores */
.score-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.score-cell{background:var(--panel-soft);border-radius:12px;padding:10px 12px;display:flex;flex-direction:column;gap:2px}
.score-cell small{font-size:.64rem;font-weight:700;color:var(--text-dim);letter-spacing:.04em;text-transform:uppercase}
.score-cell b{font-size:1.15rem;font-weight:900}
.history{display:flex;flex-direction:column;gap:5px}
.history-row{display:flex;justify-content:space-between;background:var(--panel-soft);border-radius:10px;padding:8px 12px;font-size:.78rem;font-weight:600}
.history-row .h-mode{color:var(--accent2);font-weight:800}
.history-row .h-score{font-weight:900}
.history-empty{color:var(--text-dim);font-size:.8rem;text-align:center;padding:8px}

/* achievements */
.ach-list{display:flex;flex-direction:column;gap:8px}
.ach{
  display:flex;align-items:center;gap:12px;
  background:var(--panel-soft);border-radius:14px;padding:11px 14px;
}
.ach.locked{opacity:.45}
.ach-badge{
  width:38px;height:38px;border-radius:12px;flex:none;
  display:flex;align-items:center;justify-content:center;font-size:1.15rem;
  background:linear-gradient(135deg,var(--accent),#ff9f43);color:#3a2400;
}
.ach.locked .ach-badge{background:rgba(255,255,255,.12);color:var(--text-dim)}
.ach-info b{font-size:.88rem;font-weight:800;display:block}
.ach-info small{font-size:.72rem;color:var(--text-dim);font-weight:600}

/* themes */
.theme-list{display:flex;flex-direction:column;gap:9px}
.theme-item{
  display:flex;align-items:center;gap:12px;border:none;cursor:pointer;text-align:left;
  background:var(--panel-soft);border-radius:14px;padding:11px 14px;color:var(--text);
}
.theme-item.locked{opacity:.45;cursor:default}
.theme-item.active{box-shadow:0 0 0 2.5px var(--accent)}
.theme-sw{display:flex;gap:3px;flex:none}
.theme-sw i{width:15px;height:15px;border-radius:5px;display:block}
.theme-info{flex:1}
.theme-info b{font-size:.9rem;font-weight:800;display:block}
.theme-info small{font-size:.7rem;color:var(--text-dim);font-weight:600}
.theme-check{color:var(--accent);font-weight:900}

/* settings */
.setting-row{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--panel-soft);border-radius:14px;padding:13px 16px;
  font-weight:700;font-size:.92rem;cursor:pointer;
}
.setting-row input{width:22px;height:22px;accent-color:var(--accent);cursor:pointer}
.about{font-size:.68rem;color:var(--text-dim);text-align:center;line-height:1.5}

/* toasts */
#toasts{
  position:fixed;left:50%;bottom:86px;transform:translateX(-50%);
  display:flex;flex-direction:column;gap:8px;z-index:60;pointer-events:none;
  width:min(88vw,340px);
}
.toast{
  background:var(--panel);border-radius:14px;padding:11px 16px;
  display:flex;align-items:center;gap:10px;
  box-shadow:0 10px 34px rgba(0,0,0,.45);
  animation:toast-in .3s ease, toast-out .35s ease 2.9s forwards;
  font-size:.82rem;font-weight:700;
}
.toast .t-ic{font-size:1.2rem;color:var(--accent)}
.toast small{display:block;color:var(--text-dim);font-weight:600;font-size:.72rem}
@keyframes toast-in{from{opacity:0;transform:translateY(16px) scale(.92)}to{opacity:1;transform:none}}
@keyframes toast-out{to{opacity:0;transform:translateY(10px)}}

@media (max-height:640px){
  #ad-slot{display:none}
  .logo h1{font-size:2.3rem}
}