/* bridge.css — Bridge It!, in Aurora Glass (DESIGN-D.md). The picker is an
   ordinary page; the building site is one full-screen canvas with frosted
   glass bars floating over it (render.js draws everything inside). */

.br{--br-easy:var(--mint);--br-medium:var(--cyan);--br-hard:var(--gold);--br-creative:var(--violet)}

/* ================================================================ picker */

.br-pick{padding-top:clamp(12px,3vw,32px);padding-bottom:var(--s-8)}
.br-title{margin:0 0 14px;font:800 var(--fs-h1)/var(--lh-tight) var(--font-display);letter-spacing:-.02em;text-wrap:balance}
.br-title span{white-space:nowrap}
.br-title__glow{background:var(--grad-aurora);-webkit-background-clip:text;background-clip:text;color:transparent}
.br-lead{max-width:640px;margin:0;color:var(--mist);font-size:var(--fs-lg)}
.br-h2{margin:clamp(28px,4vw,44px) 0 14px;font:700 var(--fs-xl)/1.2 var(--font-display)}

.br-modes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.br-mode{
  --c:var(--br-medium);
  display:grid;grid-template-columns:auto 1fr;align-items:center;gap:2px 10px;
  padding:16px 18px;border:0;border-radius:var(--r-lg);text-align:left;cursor:pointer;
  color:var(--snow);background:var(--glass-fill);
  box-shadow:inset 0 0 0 1px var(--glass-line),var(--glass-hi);
  transition:transform .3s var(--ease-spring),box-shadow .2s,background-color .2s;
  touch-action:manipulation;
}
.br-mode[data-mode="easy"]{--c:var(--br-easy)}
.br-mode[data-mode="hard"]{--c:var(--br-hard)}
.br-mode[data-mode="creative"]{--c:var(--br-creative)}
.br-mode__dot{grid-row:span 2;width:14px;height:14px;border-radius:50%;box-shadow:inset 0 0 0 2px var(--c);transition:background-color .2s,box-shadow .2s}
.br-mode__name{font:700 19px/1.15 var(--font-display)}
.br-mode__line{font:700 13.5px/1.3 var(--font-body);color:var(--mist)}
.br-mode[aria-pressed="true"]{background:color-mix(in srgb,var(--c) 13%,transparent);box-shadow:inset 0 0 0 1.5px var(--c),0 16px 36px -18px var(--c)}
.br-mode[aria-pressed="true"] .br-mode__dot{background:var(--c);box-shadow:0 0 12px var(--c)}
@media (hover:hover){.br-mode:hover{transform:translateY(-2px)}}
.br-mode:active{transform:scale(.98)}
.br-mode-tip{margin:12px 2px 0;color:var(--mist);font-size:15px;min-height:1.5em}
/* the front page's buttons say where you're up to */
.br-mode--go{align-items:start;padding:18px 18px 16px}
.br-mode--go .br-mode__dot{margin-top:5px}
.br-mode__next{grid-column:2;margin-top:8px;font:700 14px/1.35 var(--font-body);color:var(--snow)}
.br-mode__meter{grid-column:2;display:block;height:6px;margin-top:8px;border-radius:99px;background:rgba(255,255,255,.1);overflow:hidden}
.br-mode__meter i{display:block;height:100%;border-radius:inherit;background:var(--c);box-shadow:0 0 10px var(--c)}
@media (max-width:820px){.br-modes{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:420px){.br-modes{grid-template-columns:1fr}}

.br-levels{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:18px}
.br-level{display:flex;flex-direction:column;overflow:hidden;color:inherit;text-decoration:none;transition:transform .35s var(--ease-spring),box-shadow .2s}
@media (hover:hover){.br-level:hover{transform:translateY(-4px)}}
.br-level:active{transform:scale(.985)}
.br-level:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.br-thumb{position:relative;aspect-ratio:16/8.5;background:var(--fjord)}
.br-thumb__canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.br-thumb::after{content:"";position:absolute;inset:auto 0 0;height:40%;background:linear-gradient(180deg,transparent,rgba(7,13,31,.35));pointer-events:none}
.br-thumb__n{
  position:absolute;top:12px;left:12px;z-index:1;display:grid;place-items:center;width:38px;height:38px;border-radius:13px;
  font:800 19px/1 var(--font-display);color:var(--ink);background:var(--grad-aurora);box-shadow:0 8px 20px -8px rgba(92,242,176,.7)
}
.br-level__body{display:flex;flex-direction:column;gap:8px;padding:16px 18px 18px}
.br-level__title{margin:0;font:700 22px/1.15 var(--font-display)}
.br-level__blurb{margin:0;color:var(--mist);font-size:15.5px;line-height:1.45}
.br-level__meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:4px}
.br-tag{display:inline-flex;align-items:center;min-height:28px;padding:0 11px;border-radius:999px;font:800 12.5px/1 var(--font-body);color:var(--snow);background:rgba(255,255,255,.07);box-shadow:inset 0 0 0 1px rgba(255,255,255,.1)}
.br-tag--money{color:var(--gold-hi)}
.br-pips{display:inline-flex;gap:5px;margin-left:auto}
.br-pips i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.12)}
.br-pips i.is-done[data-m="easy"]{background:var(--br-easy)}
.br-pips i.is-done[data-m="medium"]{background:var(--br-medium)}
.br-pips i.is-done[data-m="hard"]{background:var(--br-hard)}
.br-pips i.is-done[data-m="creative"]{background:var(--br-creative)}
.br-level__best{margin:0;font:700 13px/1.3 var(--font-body);color:var(--dim)}

.br-how{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:clamp(28px,4vw,44px) 0 0;padding:0;list-style:none}
.br-how li{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;padding:18px;border-radius:var(--r-lg)}
.br-how__n{grid-row:span 2;display:grid;place-items:center;width:32px;height:32px;border-radius:11px;font:800 16px/1 var(--font-display);color:var(--cyan);background:rgba(79,216,240,.12);box-shadow:inset 0 0 0 1px rgba(79,216,240,.35)}
.br-how strong{font:700 17px/1.25 var(--font-display)}
.br-how span:last-child{color:var(--mist);font-size:14.5px;line-height:1.45}

@media (max-width:860px){
  .br-modes{grid-template-columns:repeat(2,minmax(0,1fr))}
  .br-how{grid-template-columns:1fr}
}

/* ========================================================= building site */

body.br-playing{height:100vh;height:100dvh;overflow:hidden;display:flex;flex-direction:column;overscroll-behavior:none}
body.br-playing::after{display:none}
body.br-playing .site-header::before{opacity:1}
body.br-playing #app{flex:1;min-height:0;position:relative}

.br-stage{position:absolute;inset:0;overflow:hidden;background:var(--polar);user-select:none;-webkit-user-select:none}
.br-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:crosshair}
.br-stage.is-driving .br-canvas{cursor:default}

/* frosted bars over the canvas: only their own buttons take touches */
.br-top,.br-dock{position:absolute;left:max(10px,var(--sal));right:max(10px,var(--sar));display:flex;gap:8px;pointer-events:none;z-index:2}
.br-top > *,.br-dock > *{pointer-events:auto}
.br-top{top:10px;align-items:stretch}
.br-dock{bottom:max(10px,var(--sab));align-items:flex-end;justify-content:space-between}

.br-chip{
  display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:18px;
  background:rgba(8,14,36,.62);
  -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
  box-shadow:inset 0 0 0 1px var(--glass-line),var(--glass-hi),var(--shadow-md);
}
.br-levelchip{padding:6px 14px 6px 6px;min-width:0}
.br-levelchip__n{display:grid;place-items:center;flex:none;width:38px;height:38px;border-radius:13px;font:800 18px/1 var(--font-display);color:var(--ink);background:var(--grad-aurora)}
.br-levelchip__t{display:flex;flex-direction:column;gap:3px;min-width:0}
.br-levelchip__t strong{font:700 15.5px/1.1 var(--font-display);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.br-mode-badge{font:800 11px/1 var(--font-body);letter-spacing:.1em;text-transform:uppercase}
.br-mode-badge.is-easy{color:var(--br-easy)}
.br-mode-badge.is-medium{color:var(--br-medium)}
.br-mode-badge.is-hard{color:var(--br-hard)}
.br-mode-badge.is-creative{color:var(--br-creative)}

.br-budget{flex:1 1 auto;max-width:420px;min-width:140px;flex-direction:column;align-items:stretch;justify-content:center;gap:7px;padding:8px 16px}
.br-budget__nums{display:flex;align-items:baseline;gap:8px;white-space:nowrap}
.br-budget__spent{font:800 21px/1 var(--font-display);font-variant-numeric:tabular-nums}
.br-budget__of{font:700 13px/1 var(--font-body);color:var(--mist);overflow:hidden;text-overflow:ellipsis}
.br-meter{height:7px;border-radius:99px;background:rgba(255,255,255,.1);overflow:hidden}
.br-meter i{display:block;height:100%;width:0;border-radius:inherit;background:var(--grad-progress);transition:width .3s var(--ease-out)}
.br-meter.is-tight i{background:linear-gradient(90deg,var(--gold),var(--coral))}
.br-meter.is-creative i{background:var(--grad-aurora);opacity:.45}

.br-tools{margin-left:auto;gap:4px;padding:6px}
.br-tools .iconbtn{width:42px;height:42px;background:transparent;box-shadow:none}
@media (hover:hover){.br-tools .iconbtn:hover{background:rgba(255,255,255,.08)}}

.br-hint{
  position:absolute;z-index:2;top:84px;left:50%;transform:translateX(-50%);
  width:max-content;max-width:min(580px,calc(100% - 24px));padding:9px 16px;border-radius:999px;
  font:700 14.5px/1.35 var(--font-body);color:var(--snow);text-align:center;
  background:rgba(8,14,36,.55);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:inset 0 0 0 1px rgba(92,242,176,.28);pointer-events:none;
}
.br-hint:empty{display:none}
.br-hint.is-warn{color:#FFD9D2;box-shadow:inset 0 0 0 1px rgba(255,133,119,.6)}
.br-hint.is-pop{animation:br-pop .32s var(--ease-spring)}
@keyframes br-pop{from{transform:translateX(-50%) scale(.92)}to{transform:translateX(-50%) scale(1)}}

.br-parts{
  display:flex;gap:4px;padding:6px;border-radius:20px;overflow-x:auto;scrollbar-width:none;
  background:rgba(8,14,36,.62);-webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
  box-shadow:inset 0 0 0 1px var(--glass-line),var(--glass-hi),var(--shadow-md);
}
.br-parts::-webkit-scrollbar{display:none}
.br-part{
  display:flex;flex-direction:column;align-items:center;gap:3px;flex:none;width:80px;padding:7px 4px 8px;
  border:0;border-radius:14px;color:var(--mist);background:transparent;cursor:pointer;touch-action:manipulation;
  transition:background-color .15s,color .15s,transform .25s var(--ease-spring),opacity .2s;
}
.br-part__art{display:grid;place-items:center;height:28px}
.br-swatch{width:44px;height:34px}
.br-part__art--erase svg{width:24px;height:24px}
.br-part__name{font:800 13.5px/1 var(--font-body);color:var(--snow)}
.br-part__price{font:700 11.5px/1 var(--font-body);color:var(--dim);font-variant-numeric:tabular-nums}
.br-part[aria-pressed="true"]{background:rgba(92,242,176,.13);box-shadow:inset 0 0 0 1.5px var(--mint)}
.br-part[aria-pressed="true"] .br-part__price{color:var(--mint-hi)}
.br-part[data-tool="erase"][aria-pressed="true"]{background:rgba(255,133,119,.12);box-shadow:inset 0 0 0 1.5px var(--coral)}
.br-part[data-tool="erase"][aria-pressed="true"] .br-part__price{color:#FFC1B8}
.br-part.is-broke{opacity:.42}
@media (hover:hover){.br-part:hover{background:rgba(255,255,255,.07)}}
.br-part:active{transform:scale(.95)}

.br-go{min-width:156px;flex:none}
.br-go svg{width:20px;height:20px}

.br-drivebar{display:flex;align-items:flex-end;gap:10px;width:100%;pointer-events:none}
.br-drivebar > *{pointer-events:auto}
.br-drivebar__toggles{display:flex;gap:6px;padding:6px;border-radius:18px;background:rgba(8,14,36,.62);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:inset 0 0 0 1px var(--glass-line)}
.br-toggle{min-height:40px;padding:0 13px}
.br-toggle svg{width:17px;height:17px}
.br-toggle[aria-pressed="true"]{color:var(--snow);background:rgba(79,216,240,.14);box-shadow:inset 0 0 0 1.5px var(--cyan)}
.br-stopbtn{background:rgba(8,14,36,.62);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}
.br-status{
  margin-left:auto;padding:12px 18px;border-radius:18px;font:700 17px/1.1 var(--font-display);
  background:rgba(8,14,36,.62);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:inset 0 0 0 1px var(--glass-line);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46%
}
.br-status:empty{display:none}

/* ---- smaller screens ---- */
@media (max-width:760px){
  .br-levelchip__t{display:none}
  .br-levelchip{padding:6px}
  .br-tools .iconbtn{width:38px;height:38px}
  .br-tools .iconbtn svg{width:18px;height:18px}
  .br-part{width:60px;padding:6px 2px 7px}
  .br-part__price{display:none}
  .br-swatch{width:38px;height:28px}
  .br-go{min-width:0;padding:0 18px;min-height:56px}
  .br-status{font-size:15px;padding:10px 14px}
  .br-hint{top:76px;font-size:13.5px}
}
@media (max-width:480px){
  .br-dock{flex-wrap:wrap;justify-content:stretch}
  .br-parts{flex:1 1 100%;justify-content:space-between}
  .br-go{flex:1 1 100%}
  .br-tools [aria-label="How to build"]{display:none}
  .br-budget{min-width:0;padding:8px 12px}
  .br-budget__of{font-size:12px}
  .br-toggle span{display:none}
  .br-stopbtn span{display:none}
  .br-stopbtn{width:54px;padding:0}
}
/* phones on their side: the canvas needs every pixel of height */
@media (max-height:520px){
  body.br-playing .site-header{height:calc(50px + var(--sat))}
  .br-top{top:6px}
  .br-chip{padding:4px 6px;border-radius:15px}
  .br-levelchip__n{width:32px;height:32px;font-size:16px}
  .br-tools .iconbtn{width:36px;height:36px}
  .br-budget{padding:5px 12px;gap:5px}
  .br-budget__spent{font-size:18px}
  .br-dock{bottom:max(6px,var(--sab))}
  .br-parts{padding:4px}
  .br-part{padding:4px 2px 5px;gap:2px}
  .br-part__art{height:22px}
  .br-swatch{width:34px;height:24px}
  .br-go{min-height:50px}
  .br-hint{top:62px;padding:6px 12px;font-size:13px}
}

/* ================================================================= sheets */

.br-result .sheet__title{text-align:center;font-size:clamp(28px,4vw,36px)}
.br-result__skip{display:grid;place-items:center;margin:-6px 0 4px}
.br-result__line{margin:0 0 16px;text-align:center;color:var(--snow);font-size:17px;text-wrap:balance}
.br-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:12px}
.br-stat{display:flex;flex-direction:column;align-items:center;gap:5px;padding:12px 6px;border-radius:16px;background:rgba(255,255,255,.05);box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
.br-stat span{font:800 11px/1 var(--font-body);letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.br-stat strong{font:800 20px/1 var(--font-display);font-variant-numeric:tabular-nums}
.br-result__best{margin:0 0 18px;text-align:center;font:700 14.5px/1.4 var(--font-body);color:var(--gold-hi)}
.br-result__tip{margin:0 0 18px;padding:12px 14px;border-radius:14px;color:var(--mist);background:rgba(79,216,240,.07);box-shadow:inset 0 0 0 1px rgba(79,216,240,.2);font-size:15px;line-height:1.45}
.br-result__tip strong{color:var(--cyan)}
.br-result__btns{display:grid;gap:10px;justify-items:center}
.br-result__btns .btn--block{width:100%}

.br-help__parts{display:grid;gap:12px;margin:0 0 18px;padding:0;list-style:none}
.br-help__parts li{display:flex;align-items:center;gap:14px}
.br-help__art svg{width:56px;height:42px;display:block}
.br-help__parts div{display:flex;flex-direction:column;gap:3px}
.br-help__parts strong{font:700 15px/1.2 var(--font-display)}
.br-help__parts span{color:var(--mist);font-size:14.5px;line-height:1.4}
.br-help__tips{margin:0;padding-left:20px;color:var(--mist);font-size:15px;line-height:1.5;display:grid;gap:6px}