/* ============ MONOLITH — cinematic stacker ============ */
:root{
  --ink:#07080b;
  --ember:#ff7a2f;
  --ember-hi:#ffc074;
  --gold:#d4af6e;
  --paper:#ece6d9;
  --muted:#8f8a80;
  --rule:rgba(212,175,110,.28);
  --panel:rgba(8,9,12,.58);
  --ui:'Barlow Condensed',system-ui,sans-serif;
  --display:'Cinzel',Georgia,serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--ui);
  overflow:hidden;
  -webkit-tap-highlight-color:transparent;
  -webkit-font-smoothing:antialiased;
}
.hidden{display:none !important}

/* ---------- backdrop stack ---------- */
#backdrop{position:fixed;inset:0;z-index:0;background:var(--ink);overflow:hidden}
#backdrop .stage{
  position:absolute;inset:-4%;
  width:108%;height:108%;
  object-fit:cover;
  opacity:0;
  transition:opacity 1.6s ease, transform 14s linear;
  transform:scale(1.04);
  will-change:opacity,transform;
}
#backdrop .stage.on{opacity:1;transform:scale(1.11)}
#stage1{filter:saturate(1.2) hue-rotate(-10deg) brightness(.6) contrast(1.22)}
#stage2{filter:saturate(1.05) brightness(.9)}
#backdropGrade{
  position:absolute;inset:0;
  background:
    radial-gradient(58% 82% at 50% 46%, rgba(3,4,6,.86) 0%, rgba(3,4,6,.55) 45%, rgba(3,4,6,.1) 78%),
    linear-gradient(180deg, rgba(3,4,6,.72) 0%, rgba(3,4,6,.15) 35%, rgba(3,4,6,.8) 100%);
}

/* ---------- shared screens ---------- */
.screen{position:relative;z-index:2;width:100%;height:100dvh}
.eyebrow{
  font-size:clamp(.68rem,1.4vw,.86rem);letter-spacing:.42em;text-transform:uppercase;
  color:var(--gold);opacity:.95;font-weight:500;text-shadow:0 2px 14px rgba(0,0,0,.95);
}

/* ---------- title ---------- */
#title{display:grid;place-items:center;text-align:center;overflow:hidden}
#titleVideo{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-1;
  opacity:0;transition:opacity 1.2s ease;
}
#titleVideo.ready{opacity:1}
.title-scrim{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(75% 75% at 50% 52%, rgba(4,5,8,.12), rgba(4,5,8,.74) 100%),
    linear-gradient(180deg,rgba(4,5,8,.55) 0%,rgba(4,5,8,.12) 38%,rgba(4,5,8,.88) 100%);
}
.title-inner{position:relative;display:grid;gap:1.1rem;justify-items:center;padding:2rem;animation:riseIn 1.4s cubic-bezier(.16,1,.3,1) both}
.title-inner::before{
  content:'';position:absolute;inset:-14% -18%;z-index:-1;pointer-events:none;
  background:radial-gradient(58% 58% at 50% 52%, rgba(4,5,8,.88) 0%, rgba(4,5,8,.62) 48%, rgba(4,5,8,0) 76%);
}
@keyframes riseIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
.wordmark{
  font-family:var(--display);font-weight:900;
  font-size:clamp(3rem,13vw,9.5rem);
  letter-spacing:.16em;line-height:.95;margin-right:-.16em;
  background:linear-gradient(180deg,#fff8ee 0%,#e3c79a 45%,#8d6b3c 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 6px 30px rgba(255,122,47,.35));
}
.tagline{
  font-size:clamp(.95rem,2.2vw,1.3rem);letter-spacing:.34em;text-transform:uppercase;
  color:#c3bdb2;font-weight:300;text-shadow:0 2px 18px rgba(0,0,0,.95),0 0 4px rgba(0,0,0,.9);
}
.btn-primary{
  margin-top:1.2rem;
  font-family:var(--ui);font-size:clamp(1rem,2vw,1.15rem);font-weight:600;
  letter-spacing:.34em;text-transform:uppercase;
  color:#120c06;background:linear-gradient(180deg,var(--ember-hi),var(--ember));
  border:0;border-radius:2px;padding:.95rem 3rem;cursor:pointer;
  box-shadow:0 0 0 1px rgba(255,192,116,.5), 0 12px 40px rgba(255,122,47,.28);
  transition:transform .18s ease, box-shadow .18s ease, filter .18s ease;
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(255,192,116,.8),0 16px 52px rgba(255,122,47,.45)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  font-family:var(--ui);font-size:.9rem;font-weight:500;letter-spacing:.26em;text-transform:uppercase;
  color:var(--muted);background:none;border:1px solid var(--rule);border-radius:2px;
  padding:.7rem 2rem;cursor:pointer;transition:color .18s,border-color .18s;
}
.btn-ghost:hover{color:var(--paper);border-color:var(--gold)}
.title-meta{
  display:flex;flex-wrap:wrap;gap:.4rem 1.4rem;justify-content:center;
  margin-top:1.6rem;font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;color:#9b958b;
  text-shadow:0 2px 12px rgba(0,0,0,.95);
}
#loadBar{position:absolute;bottom:0;left:0;right:0;height:2px;background:rgba(255,255,255,.06)}
#loadBar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--ember),var(--ember-hi));transition:width .3s ease}

/* ---------- game layout ---------- */
#game{
  display:grid;grid-template-columns:minmax(140px,190px) auto minmax(140px,190px);
  align-items:center;justify-content:center;gap:clamp(.8rem,2.4vw,2.4rem);
  padding:1rem;
}
.hud-rail{display:grid;gap:.8rem;align-content:center}
.panel{
  background:var(--panel);backdrop-filter:blur(10px);
  border:1px solid var(--rule);border-radius:3px;padding:.7rem .85rem;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05), 0 18px 48px rgba(0,0,0,.5);
}
.panel h2{
  font-family:var(--ui);font-size:.72rem;font-weight:600;letter-spacing:.36em;
  text-transform:uppercase;color:var(--gold);margin-bottom:.5rem;opacity:.9;
}
.panel canvas{display:block;width:100%;height:auto}
.stat{display:flex;justify-content:space-between;align-items:baseline;padding:.28rem 0;border-bottom:1px solid rgba(212,175,110,.1)}
.stat:last-child{border-bottom:0}
.stat span{font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--muted)}
.stat b{font-family:var(--display);font-size:1.15rem;font-weight:700;letter-spacing:.04em;color:var(--paper);font-variant-numeric:tabular-nums}
.stat b.bump{animation:bump .32s cubic-bezier(.2,1.6,.4,1)}
@keyframes bump{0%{transform:scale(1)}40%{transform:scale(1.28);color:var(--ember-hi)}100%{transform:scale(1)}}
.chapter{text-align:center}
.chapter span{display:block;font-size:.66rem;letter-spacing:.34em;text-transform:uppercase;color:var(--muted);margin-bottom:.25rem}
.chapter b{font-family:var(--display);font-size:.98rem;letter-spacing:.1em;color:var(--gold)}

/* ---------- board ---------- */
.board-wrap{display:grid;place-items:center}
#shaker{position:relative;will-change:transform}
#board{
  display:block;border-radius:2px;
  background:rgba(3,4,7,.56);
  border:1px solid var(--rule);
  box-shadow:
    inset 0 0 90px rgba(0,0,0,.9),
    0 0 0 1px rgba(0,0,0,.6),
    0 30px 90px rgba(0,0,0,.75);
}
#flash{position:absolute;inset:0;pointer-events:none;opacity:0;background:#fff;mix-blend-mode:screen;border-radius:2px}
#callout{
  position:absolute;left:50%;top:38%;transform:translate(-50%,-50%);
  pointer-events:none;text-align:center;opacity:0;white-space:nowrap;
  font-family:var(--display);font-weight:900;letter-spacing:.14em;text-transform:uppercase;
  font-size:clamp(1.4rem,3.4vw,2.4rem);
  background:linear-gradient(180deg,#fff8ee,#ffb454 55%,#c8722a);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 26px rgba(255,140,60,.75));
}
#callout.go{animation:callout 1.05s cubic-bezier(.16,1,.3,1) forwards}
@keyframes callout{
  0%{opacity:0;transform:translate(-50%,-50%) scale(.6)}
  22%{opacity:1;transform:translate(-50%,-50%) scale(1.06)}
  70%{opacity:1;transform:translate(-50%,-58%) scale(1)}
  100%{opacity:0;transform:translate(-50%,-78%) scale(1)}
}

/* ---------- cinematic opening ---------- */
#intro{
  position:fixed;inset:0;z-index:22;display:grid;place-items:center;
  pointer-events:auto;background:rgba(3,4,7,.72);
  animation:introScrim 4.2s ease forwards;
}
.intro-inner{display:grid;gap:.6rem;justify-items:center;text-align:center;padding:2rem}
.intro-eyebrow{
  font-family:var(--ui);font-size:clamp(.7rem,1.5vw,.9rem);
  letter-spacing:.5em;text-transform:uppercase;color:var(--gold);
  opacity:0;animation:introEyebrow 4.2s cubic-bezier(.16,1,.3,1) forwards;
}
.intro-name{
  font-family:var(--display);font-weight:900;
  font-size:clamp(2rem,8vw,5rem);letter-spacing:.14em;text-transform:uppercase;
  margin-right:-.14em;
  background:linear-gradient(180deg,#fff8ee 0%,#e3c79a 48%,#8d6b3c 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  opacity:0;animation:introName 4.2s cubic-bezier(.16,1,.3,1) forwards;
}
.intro-skip{
  margin-top:1.4rem;font-size:.68rem;letter-spacing:.28em;text-transform:uppercase;
  color:#6b665e;opacity:0;animation:introSkip 4.2s ease forwards;
}
#intro.out{animation:none;opacity:0;pointer-events:none;transition:opacity .42s ease}
#intro.out .intro-inner{animation:none}
/* the name lands on the brass hit at ~2.05s (49% of 4.2s) */
@keyframes introScrim{
  0%{background:rgba(3,4,7,.97)}
  46%{background:rgba(3,4,7,.9)}
  49%{background:rgba(255,236,210,.22)}
  56%{background:rgba(3,4,7,.72)}
  88%{background:rgba(3,4,7,.6)}
  100%{background:rgba(3,4,7,0)}
}
@keyframes introEyebrow{
  0%{opacity:0;letter-spacing:.9em}
  14%{opacity:0}
  34%{opacity:.95;letter-spacing:.5em}
  80%{opacity:.95}
  100%{opacity:0}
}
@keyframes introName{
  0%{opacity:0;transform:scale(1.5);filter:blur(14px)}
  44%{opacity:0;transform:scale(1.24);filter:blur(9px)}
  49%{opacity:1;transform:scale(1);filter:blur(0);
      text-shadow:0 0 70px rgba(255,150,70,.95)}
  62%{opacity:1;transform:scale(1.008);text-shadow:0 0 26px rgba(255,150,70,.4)}
  84%{opacity:1;transform:scale(1.02)}
  100%{opacity:0;transform:scale(1.05)}
}
@keyframes introSkip{
  0%,58%{opacity:0}
  70%{opacity:.75}
  90%{opacity:.75}
  100%{opacity:0}
}
@media (prefers-reduced-motion:reduce){
  #intro,.intro-eyebrow,.intro-name,.intro-skip{animation-duration:.4s}
  .intro-eyebrow,.intro-name{opacity:1}
}

/* ---------- overlays ---------- */
.overlay{position:fixed;inset:0;z-index:20;display:grid;place-items:center;background:rgba(4,5,8,.78);backdrop-filter:blur(14px)}
.overlay-card{
  display:grid;gap:1rem;justify-items:center;text-align:center;
  padding:clamp(2rem,5vw,3.5rem);min-width:min(90vw,420px);
  background:var(--panel);border:1px solid var(--rule);border-radius:3px;
  box-shadow:0 40px 120px rgba(0,0,0,.7);
  animation:riseIn .5s cubic-bezier(.16,1,.3,1) both;
}
.overlay-card h2{font-family:var(--display);font-weight:900;font-size:clamp(2rem,6vw,3.2rem);letter-spacing:.14em;text-transform:uppercase;color:var(--paper)}
.final{display:flex;gap:1.2rem;margin:.6rem 0 .3rem}
.final div{display:grid;gap:.25rem;min-width:78px;padding:0 .4rem;justify-items:center}
.final div + div{border-left:1px solid rgba(212,175,110,.16)}
.final span{font-size:.68rem;letter-spacing:.26em;text-transform:uppercase;color:var(--muted)}
.final b{font-family:var(--display);font-size:1.7rem;color:var(--ember-hi);font-variant-numeric:tabular-nums}
.newbest{font-size:.8rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.55}50%{opacity:1}}

#btnPause,#btnSound{
  position:fixed;top:1rem;z-index:15;
  width:40px;height:40px;border-radius:2px;cursor:pointer;
  background:var(--panel);border:1px solid var(--rule);color:var(--gold);
  font-family:var(--ui);font-weight:700;font-size:1rem;letter-spacing:.1em;
  transition:color .18s,border-color .18s;
}
#btnPause{right:1rem}
#btnSound{right:3.6rem;z-index:31}
#btnPause:hover,#btnSound:hover{color:var(--paper);border-color:var(--gold)}
#btnSound.off{color:#6b665e}

/* ---------- touch ---------- */
#touch{
  position:fixed;left:0;right:0;bottom:0;z-index:14;
  display:grid;grid-template-columns:repeat(4,1fr);gap:.4rem;padding:.5rem .5rem calc(.5rem + env(safe-area-inset-bottom));
  background:linear-gradient(180deg,transparent,rgba(4,5,8,.8) 40%);
}
#touch button{
  font-family:var(--ui);font-size:1.1rem;font-weight:600;letter-spacing:.1em;
  color:var(--paper);background:rgba(12,14,18,.75);border:1px solid var(--rule);
  border-radius:3px;padding:.85rem 0;cursor:pointer;user-select:none;
}
#touch button:active{background:rgba(255,122,47,.28);border-color:var(--ember)}
#touch button[data-act="drop"]{grid-column:span 2;color:var(--ember-hi)}

/* ---------- film treatment ---------- */
#vignette{
  position:fixed;inset:0;z-index:30;pointer-events:none;
  box-shadow:inset 0 0 clamp(80px,16vw,240px) rgba(0,0,0,.92);
}
#grain{
  position:fixed;inset:-50%;z-index:29;pointer-events:none;opacity:.055;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1s steps(4) infinite;
}
@keyframes grain{
  0%{transform:translate(0,0)}25%{transform:translate(-3%,2%)}
  50%{transform:translate(2%,-3%)}75%{transform:translate(-2%,-2%)}100%{transform:translate(0,0)}
}

/* ---------- responsive ---------- */
@media (max-width:860px){
  #game{
    grid-template-columns:1fr 1fr;grid-template-rows:auto 1fr;
    /* align-items must not be center here: centring the well in its row would make its
       own height feed back into the space measurement in fitCanvas */
    align-content:start;align-items:start;gap:.5rem;padding:.5rem .5rem 0;
  }
  /* size the previews by height so the rails stay compact and keep their aspect */
  .panel canvas{width:auto;height:auto;max-width:100%;margin:0 auto}
  #holdCanvas{height:52px}
  #nextCanvas{height:124px}
  .hud-rail{grid-column:span 1;grid-template-columns:1fr 1fr;display:grid;gap:.5rem}
  .hud-left{grid-column:1}
  .hud-right{grid-column:2}
  .hud-rail .panel{padding:.5rem .6rem}
  .board-wrap{grid-column:span 2;grid-row:2}
  .chapter,.combo-panel{grid-column:span 2}
  .panel h2{font-size:.62rem;margin-bottom:.3rem}
  .stat b{font-size:.98rem}
  #touch{display:grid}
}
@media (min-width:861px){#touch{display:none}}
@media (prefers-reduced-motion:reduce){
  #grain{animation:none}
  #backdrop .stage{transition:opacity .4s ease}
}