/* ============================================================
   逆転裁判 ─ 逆转的深夜电波
   页面外壳样式（游戏本体全部绘制在 canvas 内）
   ============================================================ */

:root{
  --ink:#070a12;
  --ink2:#0d1220;
  --navy:#16224a;
  --navy2:#1e2f63;
  --gold:#e8c46a;
  --gold2:#b8892f;
  --red:#d9314a;
  --paper:#f2ead4;
  --edge:rgba(232,196,106,.28);
  --rail-h:52px;
}

*{box-sizing:border-box;}
html,body{height:100%;margin:0;}
body{
  background:var(--ink);
  color:#d9dcea;
  font-family:"Segoe UI","Microsoft YaHei","PingFang SC","Hiragino Sans GB",sans-serif;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
  user-select:none;
  -webkit-tap-highlight-color:transparent;
}

/* ---------- backdrop ---------- */
#backdrop{position:fixed;inset:0;z-index:0;overflow:hidden;background:
  radial-gradient(120% 90% at 50% -10%, #18213f 0%, transparent 60%),
  linear-gradient(180deg,#0b101d 0%,#070a12 55%,#04060c 100%);}
#backdrop-glow{
  position:absolute;left:50%;top:38%;width:150vmax;height:150vmax;
  transform:translate(-50%,-50%);
  background:radial-gradient(circle at center,
     rgba(52,80,168,.20) 0%, rgba(30,47,99,.12) 26%, rgba(0,0,0,0) 62%);
  filter:blur(2px);
}
#backdrop-grid{
  position:absolute;inset:-10%;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:44px 44px;
  transform:perspective(700px) rotateX(62deg) translateY(22%) scale(1.6);
  mask-image:linear-gradient(180deg,transparent 0%,rgba(0,0,0,.55) 40%,transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,transparent 0%,rgba(0,0,0,.55) 40%,transparent 88%);
  opacity:.75;
}

/* ---------- stage / device ---------- */
#stage{
  position:relative;z-index:1;
  height:100%;width:100%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;
  padding:8px 8px 4px;
}
#device{
  position:relative;
  flex:0 0 auto;
  filter:drop-shadow(0 26px 50px rgba(0,0,0,.72)) drop-shadow(0 3px 0 rgba(255,255,255,.03));
  touch-action:none;
}
#device canvas{display:block;position:absolute;left:0;top:0;}
#shell{position:relative !important;}
#screens{pointer-events:none;}
#hitlayer{opacity:0;}
#device.pointer{cursor:pointer;}

/* ---------- control rail ---------- */
#rail{
  flex:0 0 auto;
  display:flex;align-items:center;gap:14px;
  padding:7px 14px;
  border-radius:12px;
  background:linear-gradient(180deg,rgba(24,33,66,.86),rgba(10,14,26,.9));
  border:1px solid var(--edge);
  box-shadow:0 10px 26px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(8px);
  max-width:min(96vw,980px);
  flex-wrap:wrap;justify-content:center;
}
.rail-group{display:flex;align-items:center;gap:7px;}
.rail-sep{width:1px;height:26px;background:linear-gradient(180deg,transparent,var(--edge),transparent);}
.rbtn{
  display:flex;align-items:center;gap:6px;
  padding:6px 11px;border-radius:8px;cursor:pointer;
  background:linear-gradient(180deg,#26356e,#141d3f);
  border:1px solid rgba(232,196,106,.22);
  color:#e6e9f6;font-size:12.5px;letter-spacing:.06em;
  transition:transform .09s ease, box-shadow .16s, border-color .16s, background .16s;
  box-shadow:0 2px 0 rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.09);
}
.rbtn .ico{font-size:14px;color:var(--gold);line-height:1;}
.rbtn:hover{border-color:rgba(232,196,106,.62);background:linear-gradient(180deg,#31447f,#1a2650);}
.rbtn:active{transform:translateY(2px);box-shadow:0 0 0 rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.05);}
.rbtn.on{border-color:var(--gold);box-shadow:0 0 12px rgba(232,196,106,.35), inset 0 1px 0 rgba(255,255,255,.12);}

.slider-group{gap:8px;}
.slbl{font-size:11px;letter-spacing:.14em;color:#93a0c8;text-transform:uppercase;}
.slider-group output{font-size:11px;color:var(--gold);min-width:38px;text-align:right;font-variant-numeric:tabular-nums;}
input[type=range]{
  -webkit-appearance:none;appearance:none;
  width:104px;height:18px;background:transparent;cursor:pointer;
}
input[type=range]::-webkit-slider-runnable-track{
  height:4px;border-radius:3px;
  background:linear-gradient(90deg,var(--gold2),#4a5a94 60%,#232c50);
  box-shadow:inset 0 1px 2px rgba(0,0,0,.6);
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;
  width:13px;height:13px;margin-top:-5px;border-radius:50%;
  background:radial-gradient(circle at 34% 30%,#fff3d0,var(--gold) 55%,var(--gold2));
  border:1px solid #6b4d13;box-shadow:0 1px 4px rgba(0,0,0,.7);
}
input[type=range]::-moz-range-track{height:4px;border-radius:3px;background:#2b3560;}
input[type=range]::-moz-range-thumb{width:13px;height:13px;border-radius:50%;background:var(--gold);border:1px solid #6b4d13;}

#credit{
  flex:0 0 auto;font-size:10.5px;letter-spacing:.1em;
  color:#515d84;text-align:center;padding-bottom:2px;
}

/* ---------- boot gate ---------- */
#boot{
  position:fixed;inset:0;z-index:40;
  display:flex;align-items:center;justify-content:center;
  background:radial-gradient(90% 70% at 50% 40%,#101a38 0%,#070a12 70%);
  transition:opacity .5s ease, visibility .5s;
}
#boot.gone{opacity:0;visibility:hidden;pointer-events:none;}
.boot-inner{position:relative;padding:4px;max-width:min(92vw,660px);}
.boot-frame{
  position:relative;
  padding:34px 40px 30px;
  border:1px solid var(--edge);
  border-radius:4px;
  background:
    linear-gradient(180deg,rgba(22,34,74,.72),rgba(8,11,22,.88));
  box-shadow:0 30px 70px rgba(0,0,0,.7), inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
}
.boot-frame::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.028) 0 1px,transparent 1px 3px);
  pointer-events:none;
}
.boot-frame::after{
  content:"";position:absolute;left:-40%;top:-60%;width:60%;height:220%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.055),transparent);
  transform:rotate(8deg);pointer-events:none;
  animation:sheen 7s ease-in-out infinite;
}
@keyframes sheen{0%,70%{transform:translateX(0) rotate(8deg);}100%{transform:translateX(320%) rotate(8deg);}}

.boot-kicker{font-size:10.5px;letter-spacing:.42em;color:#7f8cb8;margin-bottom:12px;}
.boot-title{
  margin:0;font-size:clamp(38px,7.4vw,62px);line-height:1;
  font-weight:900;letter-spacing:.02em;
  font-family:"Yu Mincho","Songti SC","SimSun","Noto Serif SC",serif;
}
.boot-title .t1{
  color:#fff;
  text-shadow:0 2px 0 #7a1420, 0 4px 0 #45080f, 3px 5px 14px rgba(0,0,0,.7);
}
.boot-title .t2{
  margin-left:.06em;
  background:linear-gradient(180deg,#ffeeb4 6%,#e8c46a 42%,#a8761f 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 3px 0 rgba(0,0,0,.45));
}
.boot-sub{margin-top:12px;font-size:15px;letter-spacing:.16em;color:#cfd6ee;}
.boot-line{height:1px;margin:20px 0 16px;background:linear-gradient(90deg,transparent,var(--edge) 20%,var(--edge) 80%,transparent);}
.boot-notes{margin:0 0 24px;padding:0;list-style:none;font-size:12.5px;line-height:2.05;color:#98a4c9;}
.boot-notes li::before{content:"◆";color:var(--gold2);margin-right:9px;font-size:9px;vertical-align:1px;}
#boot-go{
  display:block;width:100%;padding:14px 0;cursor:pointer;
  font-size:17px;letter-spacing:.34em;font-weight:700;color:#20160a;
  border:none;border-radius:3px;
  background:linear-gradient(180deg,#ffeab0,#e8c46a 48%,#b8892f);
  box-shadow:0 4px 0 #6f4d11, 0 12px 26px rgba(232,196,106,.24);
  transition:transform .08s, box-shadow .14s, filter .14s;
}
#boot-go:hover{filter:brightness(1.08);box-shadow:0 4px 0 #6f4d11, 0 14px 34px rgba(232,196,106,.4);}
#boot-go:active{transform:translateY(4px);box-shadow:0 0 0 #6f4d11;}
.boot-hint{margin-top:14px;font-size:11px;letter-spacing:.14em;color:#5d6890;text-align:center;}

/* ---------- help modal ---------- */
#helpmodal{
  position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;
  background:rgba(4,6,12,.8);backdrop-filter:blur(4px);
}
#helpmodal[hidden]{display:none;}
.help-card{
  max-width:min(94vw,860px);max-height:88vh;overflow:auto;
  padding:26px 30px;border-radius:6px;
  border:1px solid var(--edge);
  background:linear-gradient(180deg,rgba(22,34,74,.95),rgba(8,11,22,.97));
  box-shadow:0 30px 70px rgba(0,0,0,.75);
}
.help-card h2{margin:0 0 18px;font-size:20px;letter-spacing:.2em;color:var(--gold);font-weight:700;}
.help-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:22px;}
.help-cols h3{margin:0 0 8px;font-size:12px;letter-spacing:.24em;color:#8e9cc6;border-bottom:1px solid rgba(255,255,255,.09);padding-bottom:6px;}
.help-cols p{margin:5px 0;font-size:12.5px;line-height:1.75;color:#c3cbe4;}
.help-cols b{color:#fff;font-weight:600;margin-right:6px;}
#help-close{
  margin:24px auto 0;display:block;padding:9px 34px;cursor:pointer;
  font-size:13px;letter-spacing:.24em;color:#e8eaf4;
  background:linear-gradient(180deg,#2a3a75,#141d3f);
  border:1px solid rgba(232,196,106,.3);border-radius:6px;
}
#help-close:hover{border-color:var(--gold);}

/* ---------- narrow screens ---------- */
@media (max-height:760px){
  #credit{display:none;}
  #rail{padding:5px 10px;gap:10px;}
  .rbtn .lbl{display:none;}
  .rbtn{padding:6px 9px;}
}
@media (max-width:640px){
  .slider-group .slbl{display:none;}
  input[type=range]{width:74px;}
  #credit{display:none;}
}
body.fs #rail{position:fixed;bottom:10px;left:50%;transform:translateX(-50%);opacity:.18;transition:opacity .25s;}
body.fs #rail:hover{opacity:1;}
body.fs #credit{display:none;}