/* ============ 证件照制作 · 移动端优先 ============ */
:root{
  --bg:#0e1120; --bg2:#151a2e; --card:#1b2138; --line:#2a3352;
  --txt:#eef1fa; --sub:#9aa6c4; --main:#4f7cff; --main2:#7a5cff;
  --ok:#31c48d; --warn:#f0a132; --danger:#f2585b;
  --r:14px; --sat:env(safe-area-inset-top); --sab:env(safe-area-inset-bottom);
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  background:var(--bg); color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:15px; line-height:1.5; overscroll-behavior:none;
  -webkit-font-smoothing:antialiased;
}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input[type=range]{-webkit-appearance:none;appearance:none;background:transparent}
#app{height:100dvh;max-width:520px;margin:0 auto;position:relative;background:var(--bg);
  box-shadow:0 0 0 1px #ffffff10, 0 24px 80px #0008}
@media(min-width:560px){ body{background:radial-gradient(1200px 800px at 50% -10%,#1a2140,#070912 70%)} }

/* ---------- 屏幕切换 ---------- */
.screen{position:absolute;inset:0;display:none;flex-direction:column;height:100dvh;overflow:hidden}
.screen.active{display:flex;animation:fade .22s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- 首页 ---------- */
#screen-home{overflow-y:auto;-webkit-overflow-scrolling:touch}
.hero{position:relative;padding:calc(env(safe-area-inset-top) + 26px) 20px 22px;overflow:hidden}
.hero-bg{position:absolute;inset:-30% -20% auto;height:130%;
  background:radial-gradient(60% 60% at 20% 10%,#4f7cff55,transparent 70%),
             radial-gradient(50% 50% at 90% 20%,#7a5cff44,transparent 70%),
             linear-gradient(180deg,#1a2242,#0e1120);
  filter:blur(2px)}
.hero-inner{position:relative}
.brand{display:flex;align-items:center;gap:9px;margin-bottom:20px}
.brand-mark{display:grid;place-items:center;filter:drop-shadow(0 4px 12px #0006)}
.brand-name{font-size:13px;color:#cfd8f5;letter-spacing:.4px;font-weight:600}
.hero h1{font-size:27px;font-weight:800;letter-spacing:.5px;
  background:linear-gradient(92deg,#fff,#b9c8ff 60%,#8fa8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:8px;color:var(--sub);font-size:13.5px}
.home-actions{display:grid;gap:11px;margin-top:20px}
.btn{display:flex;align-items:center;gap:13px;border-radius:var(--r);padding:14px 16px;font-size:15px;
  transition:transform .12s ease,filter .12s ease;text-align:left}
.btn:active{transform:scale(.975)}
.btn-main{background:linear-gradient(135deg,var(--main),var(--main2));color:#fff;font-weight:600;
  box-shadow:0 10px 26px #4f7cff3d}
.btn-ghost{background:#ffffff0f;border:1px solid #ffffff1f;font-weight:600}
.btn b{display:block;font-size:15.5px}
.btn i{display:block;font-style:normal;font-size:11.5px;opacity:.75;margin-top:2px;font-weight:400}
.btn-ico{font-size:24px;line-height:1}
.samples{margin-top:18px}
.samples-label{font-size:12px;color:var(--sub)}
.sample-list{display:flex;gap:10px;margin-top:9px}
.sample-item{width:58px;flex:0 0 auto;text-align:center;font-size:11px;color:var(--sub)}
.sample-item img{width:58px;height:58px;object-fit:cover;border-radius:10px;border:1px solid #ffffff24;display:block}
.sample-item:active img{border-color:var(--main)}
.features{display:grid;grid-template-columns:1fr 1fr;gap:9px;padding:6px 16px 14px}
.feat{background:var(--card);border:1px solid #ffffff0f;border-radius:12px;padding:11px 12px}
.feat b{display:block;font-size:12.5px;margin-bottom:3px}
.feat span{font-size:11px;color:var(--sub);line-height:1.45;display:block}
.home-foot{padding:6px 20px calc(env(safe-area-inset-bottom) + 22px);text-align:center;font-size:11px;color:#6c779a}

/* ---------- 相机 ---------- */
#screen-camera{background:#000}
.cam-stage{position:relative;flex:1;overflow:hidden;background:#000}
#cam-video{width:100%;height:100%;object-fit:cover;display:block;background:#000}
#cam-video.mirror{transform:scaleX(-1)}
.cam-guide{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.cam-oval{width:66%;aspect-ratio:3/4;border-radius:50%/38%;position:relative;
  box-shadow:0 0 0 2000px #00000059;border:1.5px solid #ffffffb0}
.cam-oval-line{position:absolute;left:50%;top:26%;bottom:26%;width:1px;background:#ffffff59}
.cam-tip{position:absolute;bottom:9%;left:0;right:0;text-align:center;color:#fff;font-size:12.5px;
  text-shadow:0 1px 6px #000;opacity:.9}
.cam-bar{display:flex;align-items:center;justify-content:space-around;padding:calc(10px + env(safe-area-inset-bottom)) 24px 6px;background:#000}
.cam-btn{width:48px;height:48px;border-radius:50%;background:#ffffff1a;font-size:20px;display:grid;place-items:center;color:#fff}
.cam-btn:active{background:#ffffff33}
.cam-shutter{width:70px;height:70px;border-radius:50%;background:#fff;display:grid;place-items:center;
  box-shadow:0 0 0 4px #ffffff33}
.cam-shutter span{width:56px;height:56px;border-radius:50%;background:#fff;border:3px solid #00000022;display:block}
.cam-shutter:active{transform:scale(.94)}
.cam-fallback{padding:14px;text-align:center;color:var(--warn);font-size:12.5px}

/* ---------- 编辑器 ---------- */
#screen-editor{display:none;background:var(--bg2)}
#screen-editor.active{display:flex}
.ed-head{display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:calc(env(safe-area-inset-top) + 8px) 12px 8px;flex:0 0 auto}
.ed-btn{font-size:14px;color:#c6d0ee;padding:7px 10px;border-radius:10px;background:#ffffff0d;white-space:nowrap}
.ed-btn:active{background:#ffffff1f}
.ed-size{font-size:13px;color:var(--sub);text-align:center;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.preview{flex:1 1 auto;min-height:0;display:grid;place-items:center;position:relative;padding:4px 14px;
  background:radial-gradient(70% 60% at 50% 34%,#232b4d,#121628 75%)}
.preview-box{position:relative;max-width:100%;max-height:100%;display:grid;place-items:center}
#cv-preview{max-width:100%;max-height:100%;border-radius:6px;box-shadow:0 10px 40px #00000066,0 0 0 1px #ffffff1a;
  touch-action:none;display:block}
.preview-guide{position:absolute;border:1.5px dashed #ffffff40;border-radius:50%/30%;pointer-events:none;opacity:.85}
.loading{position:absolute;inset:0;background:#0e1120cc;backdrop-filter:blur(3px);display:grid;place-items:center;
  gap:12px;z-index:5;grid-auto-flow:row}
.loading p{font-size:13px;color:var(--sub);text-align:center}
.spinner{width:34px;height:34px;border-radius:50%;border:3px solid #ffffff26;border-top-color:var(--main);
  animation:spin .8s linear infinite;margin:0 auto 10px}
@keyframes spin{to{transform:rotate(360deg)}}

.tabs{display:flex;flex:0 0 auto;border-top:1px solid #ffffff12;background:#10142a;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:1 0 auto;min-width:64px;padding:11px 6px calc(10px);font-size:13px;color:var(--sub);position:relative;font-weight:600}
.tab.active{color:#fff}
.tab.active::after{content:"";position:absolute;left:50%;bottom:6px;transform:translateX(-50%);width:22px;height:3px;
  border-radius:3px;background:linear-gradient(90deg,var(--main),var(--main2))}

.panels{flex:0 0 auto;max-height:44dvh;overflow-y:auto;-webkit-overflow-scrolling:touch;
  padding:12px 14px calc(12px + env(safe-area-inset-bottom));background:#10142a;border-top:1px solid #ffffff0f}
.panel{display:none}
.panel.active{display:block;animation:fade .18s ease}
.panel-title{font-size:12px;color:#aab6d8;margin:2px 0 8px;font-weight:700;letter-spacing:.3px}
.panel-title:not(:first-child){margin-top:12px}
.panel-tip{font-weight:400;color:#6c779a;margin-left:6px}
.row-btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:9px}
.chip{padding:7px 12px;border-radius:999px;background:#ffffff0f;border:1px solid #ffffff17;font-size:12.5px;color:#d5ddf5}
.chip:active{transform:scale(.96)}
.chip-on{background:linear-gradient(135deg,var(--main),var(--main2));border-color:transparent;color:#fff;font-weight:600}
.chip-strong{background:#ffffff1f;color:#fff;font-weight:700}

.swatches{display:grid;grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:8px}
.sw{position:relative;border-radius:11px;padding:8px 4px 7px;background:#ffffff0b;border:1px solid #ffffff14;
  font-size:11.5px;color:#c9d3f0;text-align:center;line-height:1.25;min-height:56px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px}
.sw small{font-size:9.5px;color:#7a86ab;display:block}
.sw i{display:block;width:26px;height:26px;border-radius:50%;border:1px solid #ffffff2e;flex:0 0 auto}
.sw.sel{border-color:var(--main);background:#4f7cff1f;color:#fff;font-weight:700}
.sw.sel::after{content:"✓";position:absolute;top:2px;right:4px;font-size:10px;color:var(--main)}
.sw:active{transform:scale(.95)}

.slider-row{display:flex;align-items:center;gap:10px;padding:5px 0}
.slider-row label{font-size:12.5px;color:#b9c3e0;width:38px;flex:0 0 auto}
.slider-row input[type=range]{flex:1;height:26px}
.slider-row span{font-size:12px;color:var(--sub);width:38px;text-align:right;flex:0 0 auto;font-variant-numeric:tabular-nums}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:4px;background:#ffffff26}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:#fff;
  margin-top:-8px;box-shadow:0 2px 8px #0007}
input[type=range]::-moz-range-track{height:4px;border-radius:4px;background:#ffffff26}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border:0;border-radius:50%;background:#fff}

.brush-bar{margin-top:10px;padding-top:10px;border-top:1px dashed #ffffff1a}
.custom-size{display:flex;align-items:center;gap:8px}
.custom-size input{flex:1;min-width:0;background:#ffffff0f;border:1px solid #ffffff1f;border-radius:10px;
  padding:9px 8px;color:#fff;font-size:15px;text-align:center}
.custom-size span{color:var(--sub)}

/* ---------- 弹窗 ---------- */
.modal{position:fixed;inset:0;z-index:50;background:#000000a6;backdrop-filter:blur(4px);display:grid;
  place-items:center;padding:16px;animation:fade .18s ease}
.modal[hidden]{display:none}
.modal-card{width:100%;max-width:400px;max-height:92dvh;overflow-y:auto;background:var(--bg2);border-radius:18px;
  border:1px solid #ffffff17;box-shadow:0 30px 90px #000a;display:flex;flex-direction:column}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 10px;font-size:16px}
.modal-x{width:32px;height:32px;border-radius:50%;background:#ffffff14;display:grid;place-items:center;font-size:14px;color:#cbd4ee}
.modal-body{padding:0 16px 12px;text-align:center}
.modal-body canvas{max-width:100%;max-height:46dvh;border-radius:8px;box-shadow:0 10px 34px #0007;margin:0 auto;display:block}
.result-tip{font-size:11.5px;color:var(--sub);margin-top:10px;text-align:center}
.modal-foot{display:flex;gap:10px;padding:6px 16px calc(16px + env(safe-area-inset-bottom))}
.modal-foot .btn{flex:1;justify-content:center;padding:13px 10px}
#print-counts,#print-papers{margin-bottom:4px}
#print-tip{margin-top:8px}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translate(-50%,20px);
  background:#202842f2;border:1px solid #ffffff1f;color:#fff;padding:10px 16px;border-radius:12px;font-size:13px;
  z-index:99;opacity:0;pointer-events:none;transition:.25s;max-width:80%;text-align:center;box-shadow:0 10px 30px #0008}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.err{background:#f2585be6}