/* ===== UNITECH Door Control — Material Design 3 ===== */
:root{
  --primary:#155fce; --on-primary:#fff;
  --primary-container:#d7e2ff; --on-primary-container:#001a41;
  --secondary-container:#dae2f9; --on-secondary-container:#141b2c;
  --surface:#faf8fd; --surface-dim:#dad9de;
  --sc-lowest:#fff; --sc-low:#f4f2f7; --sc:#eeedf1; --sc-high:#e8e7ec; --sc-highest:#e3e1e6;
  --on-surface:#1a1c1e; --on-surface-variant:#44474e;
  --outline:#74777f; --outline-variant:#c4c6cf;
  --error:#ba1a1a; --error-container:#ffdad6; --on-error-container:#410002;
  --open:#2e6f3e; --on-open:#fff; --close:#b3261e; --on-close:#fff;
  --neutralbtn:#5b5e66; --on-neutralbtn:#fff;
  --inverse-surface:#2f3033; --inverse-on:#f1f0f4;
  --state:0,0,0;
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
  --e1:0 1px 2px rgba(0,0,0,.10),0 1px 3px 1px rgba(0,0,0,.05);
  --e2:0 1px 2px rgba(0,0,0,.10),0 2px 6px 2px rgba(0,0,0,.08);
  --e3:0 4px 8px 3px rgba(0,0,0,.10),0 1px 3px rgba(0,0,0,.10);
}
@media (prefers-color-scheme:dark){:root{
  --primary:#abc7ff; --on-primary:#002e6a; --primary-container:#00458f; --on-primary-container:#d7e2ff;
  --secondary-container:#3b4858; --on-secondary-container:#dae2f9;
  --surface:#111318; --surface-dim:#111318;
  --sc-lowest:#0c0e13; --sc-low:#191c20; --sc:#1d2024; --sc-high:#282a2f; --sc-highest:#33353a;
  --on-surface:#e3e2e6; --on-surface-variant:#c4c6cf; --outline:#8e9099; --outline-variant:#44474e;
  --error:#ffb4ab; --error-container:#93000a; --on-error-container:#ffdad6;
  --open:#7bdd8a; --on-open:#00390f; --close:#ffb4ab; --on-close:#690005;
  --neutralbtn:#c4c6cf; --on-neutralbtn:#2d3038;
  --inverse-surface:#e3e2e6; --inverse-on:#2f3033; --state:255,255,255;
}}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%}
body{background:var(--surface-dim);color:var(--on-surface);
  font-family:"Roboto","Pretendard Variable",Pretendard,-apple-system,"Noto Sans KR",sans-serif;
  line-height:1.4;-webkit-font-smoothing:antialiased}
.app{max-width:430px;margin:0 auto;min-height:100dvh;background:var(--surface);display:flex;flex-direction:column;position:relative;overflow:hidden}
@media(min-width:480px){body{padding:24px 0}.app{min-height:calc(100dvh - 48px);border-radius:28px;box-shadow:var(--e2)}}
#view{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:96px}
.app.no-tabs #view{padding-bottom:24px}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;position:relative}
input,select,textarea{font-family:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
.hidden{display:none!important}

/* state layer */
.state{overflow:hidden}
.state::after{content:"";position:absolute;inset:0;border-radius:inherit;background:rgb(var(--state));opacity:0;transition:opacity .15s;pointer-events:none}
.state:hover::after{opacity:.06}.state:active::after{opacity:.12}

/* icon button */
.iconbtn{width:48px;height:48px;display:grid;place-items:center;border-radius:50%;color:var(--on-surface-variant);overflow:hidden;flex:none}
.iconbtn::after{content:"";position:absolute;inset:0;border-radius:50%;background:rgb(var(--state));opacity:0;transition:.15s}
.iconbtn:hover::after{opacity:.08}.iconbtn:active::after{opacity:.12}
.iconbtn svg{width:24px;height:24px}
.iconbtn[disabled]{opacity:.38;pointer-events:none}

/* top app bar */
.topbar{display:flex;align-items:center;gap:4px;height:64px;padding:calc(var(--safe-t)) 8px 0;position:sticky;top:0;z-index:5;background:var(--surface)}
.topbar h2{flex:1;text-align:center;font-size:22px;font-weight:500;margin:0}
.topbar .spacer{width:48px;flex:none}

/* buttons */
.btn-filled{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:52px;padding:0 24px;border-radius:999px;background:var(--primary);color:var(--on-primary);font-size:15px;font-weight:600;overflow:hidden;width:100%}
.btn-filled::after{content:"";position:absolute;inset:0;background:#fff;opacity:0;transition:.15s}
.btn-filled:hover::after{opacity:.08}.btn-filled:active::after{opacity:.12}
.btn-filled[disabled]{background:color-mix(in srgb,var(--on-surface) 12%,transparent);color:color-mix(in srgb,var(--on-surface) 38%,transparent);pointer-events:none}
.btn-tonal{background:var(--secondary-container);color:var(--on-secondary-container)}
.btn-tonal::after{background:rgb(var(--state))}
.btn-text{display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 12px;border-radius:999px;color:var(--primary);font-size:14px;font-weight:600;overflow:hidden}
.btn-text.danger{color:var(--error)}
.btn-text svg{width:18px;height:18px}
.btn-filled svg,.btn-outline svg,.btn-tonal svg,.connectbtn svg{width:18px;height:18px;flex:none}
.btn-outline{border:1px solid var(--outline);background:transparent;color:var(--primary);border-radius:999px;height:48px;padding:0 20px;font-weight:600;width:100%;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.fab{position:absolute;right:20px;bottom:calc(96px + var(--safe-b));width:56px;height:56px;border-radius:18px;background:var(--primary-container);color:var(--on-primary-container);display:grid;place-items:center;box-shadow:var(--e3);z-index:7;overflow:hidden}
.fab svg{width:26px;height:26px}

/* home header + hero */
.brand{display:flex;align-items:center;gap:14px;padding:calc(20px + var(--safe-t)) 20px 6px}
.logo{width:46px;height:46px;flex:none;border-radius:14px}
.brand .name{font-size:24px;font-weight:700;letter-spacing:.2px;line-height:1}
.brand .en{font-size:12px;font-weight:600;color:var(--on-surface-variant);margin-top:6px}
.brand .ko{font-size:11.5px;color:var(--on-surface-variant);opacity:.85}
.brand .gear{margin-left:auto}
.hero{margin:10px 16px 0;border-radius:28px;overflow:hidden;position:relative;background:linear-gradient(135deg,#0b1220,#1e293b 55%,#1e3a8a);min-height:150px;display:flex;flex-direction:column;justify-content:flex-end;padding:22px}
.hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 1px,transparent 1px 46px);mask:linear-gradient(180deg,transparent,#000 40%)}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 80% at 70% 0%,rgba(96,165,250,.32),transparent 60%)}
.hero .t{position:relative;color:#fff}
.hero .t b{display:block;font-size:21px;font-weight:700;line-height:1.3}
.hero .t span{display:block;margin-top:6px;font-size:13px;color:#cbd5e1;font-weight:500}

/* section */
.section{padding:24px 16px 0}
.section-h{display:flex;align-items:center;margin:0 0 12px}
.section-h h3{font-size:15px;font-weight:600;letter-spacing:.1px;color:var(--on-surface-variant);margin:0;flex:1}

/* room cards (list) */
.roomcard{display:flex;align-items:center;gap:14px;background:var(--sc-low);border-radius:20px;padding:14px;margin-bottom:10px;overflow:hidden;width:100%;text-align:left;transition:transform .06s}
.roomcard:active{transform:scale(.99)}
.roomcard .thumb{width:56px;height:56px;border-radius:14px;background:var(--secondary-container);color:var(--on-secondary-container);display:grid;place-items:center;flex:none;overflow:hidden}
.roomcard .thumb img{width:100%;height:100%;object-fit:cover}
.roomcard .thumb svg{width:28px;height:28px}
.roomcard .meta{flex:1;min-width:0}
.roomcard .meta b{font-size:17px;font-weight:600;display:block}
.roomcard .meta span{font-size:13px;color:var(--on-surface-variant)}
.roomcard .chev{color:var(--on-surface-variant)}
.roomcard .chev svg{width:22px;height:22px}

/* showcase grid */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.casecard{background:var(--sc-low);border-radius:20px;overflow:hidden;text-align:left;transition:transform .06s;display:flex;flex-direction:column}
.casecard:active{transform:scale(.98)}
.casecard .ph{aspect-ratio:16/10;background:linear-gradient(160deg,#0f172a,#1f2937);position:relative;display:grid;place-items:center}
.casecard .ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.casecard .ph svg{width:44px;height:44px;color:#5b6b86}
.casecard .body{padding:12px 14px}
.casecard .no{display:block;font-size:12px;font-weight:700;color:var(--primary)}
.casecard .nm{display:block;font-size:15px;font-weight:600;margin-top:2px}
.casecard .art{display:block;font-size:12px;color:var(--on-surface-variant);margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-height:15px}
.badge{position:absolute;top:8px;left:8px;background:var(--error-container);color:var(--on-error-container);font-size:11px;font-weight:700;padding:3px 8px;border-radius:999px;z-index:1}
.badge.ok{background:var(--secondary-container);color:var(--on-secondary-container)}

/* control */
.breadcrumb{display:flex;align-items:center;gap:6px;padding:8px 20px 0;font-size:13px;color:var(--on-surface-variant);font-weight:500;flex-wrap:wrap}
.breadcrumb b{color:var(--on-surface)}
.breadcrumb svg{width:14px;height:14px;opacity:.6}
.ctl-title{padding:2px 20px 0}
.ctl-title h1{font-size:25px;font-weight:700;letter-spacing:-.2px;margin:2px 0}
.ctl-title .en{font-size:13px;color:var(--on-surface-variant)}
.showcase-img{margin:16px 16px 0;height:180px;border-radius:24px;overflow:hidden;position:relative;background:linear-gradient(160deg,#0f172a,#1f2937 70%);display:grid;place-items:center}
.showcase-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.showcase-img svg{width:110px;height:110px;opacity:.92;filter:drop-shadow(0 8px 24px rgba(0,0,0,.5))}
.statusrow{display:flex;align-items:center;gap:9px;padding:18px 20px 4px}
.dot{width:10px;height:10px;border-radius:50%;background:var(--outline);flex:none}
.dot.idle{background:var(--open)}.dot.moving{background:#f2a600;animation:pulse 1s infinite}.dot.off{background:var(--outline-variant)}
@keyframes pulse{50%{opacity:.35}}
.statusrow .s{font-size:15px;font-weight:600}
.statusrow .sub{font-size:13px;color:var(--on-surface-variant)}
.connectbtn{margin-left:auto;display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px 0 14px;border-radius:999px;background:var(--primary);color:var(--on-primary);font-size:14px;font-weight:600;overflow:hidden}
.connectbtn::after{content:"";position:absolute;inset:0;background:#fff;opacity:0;transition:.15s}
.connectbtn:hover::after{opacity:.08}.connectbtn:active::after{opacity:.12}
.connectbtn svg{width:18px;height:18px}
.connectbtn.on{background:var(--secondary-container);color:var(--on-secondary-container)}
.controls{display:flex;justify-content:center;gap:20px;padding:26px 16px 8px}
.ctlbtn{display:flex;flex-direction:column;align-items:center;gap:12px;background:none}
.circle{width:94px;height:94px;border-radius:50%;display:grid;place-items:center;overflow:hidden;box-shadow:var(--e1);transition:transform .08s,filter .15s}
.circle::after{content:"";position:absolute;inset:0;border-radius:50%;background:#fff;opacity:0;transition:.15s}
.ctlbtn:hover .circle::after{opacity:.08}.ctlbtn:active .circle{transform:scale(.93)}
.circle svg{width:40px;height:40px;position:relative}
.circle.fwd{background:var(--open);color:var(--on-open)}
.circle.stop{background:var(--neutralbtn);color:var(--on-neutralbtn)}
.circle.rev{background:var(--close);color:var(--on-close)}
.ctlbtn .lb{font-size:15px;font-weight:600}
.ctlbtn .lb small{display:block;font-size:11.5px;font-weight:500;color:var(--on-surface-variant);margin-top:1px}
.controls[data-enabled="false"] .ctlbtn:not(.always){pointer-events:none}
.controls[data-enabled="false"] .ctlbtn:not(.always) .circle{filter:grayscale(.6) opacity(.4);box-shadow:none}
.notice{margin:16px 16px 0;background:var(--sc);border-radius:14px;padding:12px 14px;font-size:12.5px;color:var(--on-surface-variant);display:flex;gap:8px;align-items:flex-start}
.notice svg{width:16px;height:16px;flex:none;margin-top:1px}

/* info/list card */
.card{margin:20px 16px 0;background:var(--sc-low);border-radius:16px;padding:16px 18px}
.card .head{display:flex;align-items:center;gap:8px;margin-bottom:8px;color:var(--on-surface-variant)}
.card .head svg{width:18px;height:18px}
.card .head b{font-size:13px;font-weight:600}
.card .row{display:flex;font-size:14px;padding:6px 0}
.card .row .k{width:92px;color:var(--on-surface-variant)}
.card .row .v{flex:1;color:var(--on-surface);font-weight:600;word-break:break-all}
.card .row .v.ok{color:var(--open)}.card .row .v.warn{color:var(--error)}

/* list items (settings/devices) */
.list{padding:8px 8px}
.list-item{display:flex;align-items:center;gap:14px;width:100%;padding:14px 12px;min-height:56px;text-align:left;border-radius:14px;overflow:hidden}
.list-item .li-ic{width:40px;height:40px;border-radius:12px;background:var(--sc-high);display:grid;place-items:center;flex:none;color:var(--on-surface-variant)}
.list-item .li-ic svg{width:22px;height:22px}
.list-item .li-t{flex:1;min-width:0}
.list-item .li-t b{font-size:15px;font-weight:600;display:block}
.list-item .li-t span{font-size:12.5px;color:var(--on-surface-variant)}
.list-item .li-end{color:var(--on-surface-variant);display:flex;align-items:center;gap:8px}
.list-item .li-end svg{width:20px;height:20px}
.list-item[disabled]{opacity:.5;pointer-events:none}
.divider{height:1px;background:var(--outline-variant);margin:6px 20px}
.subhead{font-size:12px;font-weight:700;letter-spacing:.5px;color:var(--primary);padding:16px 20px 4px;text-transform:uppercase}

/* form fields */
.setform{padding:16px 20px}
.fld{margin-bottom:22px}
.fld label{display:block;font-size:15px;font-weight:600;margin-bottom:4px}
.fld .hint{font-size:12.5px;color:var(--on-surface-variant);margin:0 0 12px;line-height:1.45}
.field{display:flex;align-items:center;gap:12px}
.field input,.field select{flex:1;font-size:16px;font-weight:500;padding:15px 16px;border:1px solid var(--outline);border-radius:12px;background:transparent;color:var(--on-surface);width:100%}
.field input:focus,.field select:focus{outline:none;border:2px solid var(--primary);padding:14px 15px}
.field .unit{font-size:16px;font-weight:600;color:var(--on-surface-variant)}
.field.err input{border-color:var(--error)}
.fielderr{color:var(--error);font-size:12px;margin-top:6px;min-height:14px}

/* switch (segmented lang) */
.segmented{display:flex;border:1px solid var(--outline);border-radius:999px;overflow:hidden}
.segmented button{flex:1;height:44px;font-size:14px;font-weight:600;color:var(--on-surface-variant)}
.segmented button.sel{background:var(--secondary-container);color:var(--on-secondary-container)}

/* empty state */
.empty{padding:60px 24px;text-align:center;color:var(--on-surface-variant)}
.empty svg{width:46px;height:46px;color:var(--outline-variant);margin-bottom:12px}
.empty b{display:block;font-size:16px;color:var(--on-surface);font-weight:600}
.empty p{font-size:13px;margin:6px 0 18px}

/* history */
.logitem{display:flex;align-items:center;gap:14px;padding:14px 12px;min-height:56px;border-bottom:1px solid var(--outline-variant)}
.logitem .ldot{width:10px;height:10px;border-radius:50%;flex:none}
.logitem .lt{flex:1}.logitem .lt b{font-size:15px;font-weight:600}
.logitem .lt span{display:block;font-size:12px;color:var(--on-surface-variant)}
.logitem .lts{font-size:12px;color:var(--on-surface-variant);white-space:nowrap}

/* snackbar */
.toast{position:fixed;left:50%;bottom:calc(96px + var(--safe-b));transform:translateX(-50%) translateY(10px);background:var(--inverse-surface);color:var(--inverse-on);font-size:14px;font-weight:500;padding:14px 18px;border-radius:8px;opacity:0;pointer-events:none;transition:.2s;z-index:60;box-shadow:var(--e2);max-width:88%;text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* nav bar */
.tabbar{position:absolute;left:0;right:0;bottom:0;display:flex;height:calc(80px + var(--safe-b));padding-bottom:var(--safe-b);background:var(--sc);z-index:6}
.app.no-tabs .tabbar{display:none}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding-top:12px}
.tab .ind{width:64px;height:32px;display:grid;place-items:center;border-radius:999px;position:relative;transition:background .15s;overflow:hidden;color:var(--on-surface-variant)}
.tab .ind svg{width:24px;height:24px}
.tab .tlbl{font-size:12px;font-weight:600;letter-spacing:.4px;color:var(--on-surface-variant)}
.tab.active .ind{background:var(--secondary-container);color:var(--on-secondary-container)}
.tab.active .tlbl{color:var(--on-surface)}
.tab .ind::after{content:"";position:absolute;inset:0;background:rgb(var(--state));opacity:0;transition:.15s}
.tab:hover .ind::after{opacity:.08}

/* splash */
.splash{position:absolute;inset:0;background:linear-gradient(160deg,#0b1220,#12234b);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;z-index:80;color:#fff}
.splash .logo{width:76px;height:76px;border-radius:22px}
.splash .st{text-align:center}
.splash .st b{font-size:24px;font-weight:800;letter-spacing:.5px}
.splash .st span{display:block;font-size:13px;color:#9fb4d8;margin-top:6px}
.splash .ver{position:absolute;bottom:calc(28px + var(--safe-b));font-size:12px;color:#7f93b8}
.fade-out{opacity:0;transition:opacity .4s;pointer-events:none}

/* modal / dialog / bottom sheet */
.scrim{position:absolute;inset:0;background:rgba(0,0,0,.4);z-index:70;display:flex;align-items:flex-end;justify-content:center;opacity:0;transition:opacity .2s}
.scrim.show{opacity:1}
.scrim.center{align-items:center}
.dialog{background:var(--sc-low);border-radius:28px;padding:24px;width:min(92%,360px);box-shadow:var(--e3);transform:scale(.96);transition:transform .2s}
.scrim.show .dialog{transform:scale(1)}
.dialog h3{font-size:22px;font-weight:500;margin:0 0 8px}
.dialog p{font-size:14px;color:var(--on-surface-variant);margin:0 0 16px;line-height:1.5}
.dialog .actions{display:flex;justify-content:flex-end;gap:8px;margin-top:12px}
.sheet{background:var(--sc-low);border-radius:28px 28px 0 0;padding:12px 20px calc(24px + var(--safe-b));width:min(100%,430px);box-shadow:var(--e3);transform:translateY(20px);transition:transform .2s;max-height:88vh;overflow-y:auto}
.scrim.show .sheet{transform:translateY(0)}
.sheet .grab{width:36px;height:4px;border-radius:999px;background:var(--outline-variant);margin:0 auto 12px}
.sheet h3{font-size:20px;font-weight:600;margin:4px 0 4px}