/* ─── Variables ─────────────────────────────────────────────────────────────── */
:root {
  --bg:        #0a0e1a;
  --bg2:       #111827;
  --bg3:       #1a2235;
  --accent:    #10ffb4;
  --accent-d:  rgba(16,255,180,.12);
  --blue:      #3b82f6;
  --blue-d:    rgba(59,130,246,.12);
  --red:       #ef4444;
  --red-d:     rgba(239,68,68,.12);
  --orange:    #f59e0b;
  --orange-d:  rgba(245,158,11,.12);
  --green:     #22c55e;
  --green-d:   rgba(34,197,94,.12);
  --text:      #f1f5f9;
  --muted:     #64748b;
  --border:    rgba(255,255,255,.07);
  --r:         18px;
  --r-sm:      10px;
  --shadow:    0 8px 32px rgba(0,0,0,.45);
}

/* ─── Reset ─────────────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}

/* ─── Splash ─────────────────────────────────────────────────────────────────── */
#splash{
  position:fixed;inset:0;z-index:999;
  background:linear-gradient(135deg,#06091a 0%,#0d1433 100%);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .55s ease;
}
#splash.out{opacity:0;pointer-events:none}

.spl-inner{display:flex;flex-direction:column;align-items:center;gap:18px}

.spl-logo{
  width:110px;height:110px;
  filter:drop-shadow(0 0 24px rgba(16,255,180,.55));
  animation:spl-pulse 2.2s ease-in-out infinite;
}
@keyframes spl-pulse{
  0%,100%{transform:scale(1);filter:drop-shadow(0 0 22px rgba(16,255,180,.5))}
  50%{transform:scale(1.06);filter:drop-shadow(0 0 38px rgba(16,255,180,.85))}
}

.spl-title{
  font-size:2.4rem;font-weight:800;letter-spacing:3px;
  background:linear-gradient(135deg,#10ffb4,#3b82f6);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.spl-sub{font-size:.82rem;color:var(--muted);letter-spacing:4px;text-transform:uppercase}

.spl-bar-wrap{width:160px;height:3px;background:var(--bg3);border-radius:2px;overflow:hidden;margin-top:6px}
.spl-bar{height:100%;width:0;background:linear-gradient(90deg,#10ffb4,#3b82f6);
  border-radius:2px;animation:spl-load 2.3s ease-in-out forwards}
@keyframes spl-load{from{width:0}to{width:100%}}

/* ─── App shell ──────────────────────────────────────────────────────────────── */
#app{display:flex;flex-direction:column;min-height:100vh}
.hidden{display:none!important}

/* ─── Header ─────────────────────────────────────────────────────────────────── */
.hdr{
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;
  background:rgba(10,14,26,.92);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;
}
.hdr-logo{width:30px;height:30px;flex-shrink:0}
.hdr-title{
  font-size:1.25rem;font-weight:800;letter-spacing:1px;
  background:linear-gradient(135deg,#10ffb4,#5ba3ff);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hdr-gap{flex:1}
.hdr-btn{
  background:none;border:1px solid var(--border);color:var(--muted);
  border-radius:8px;padding:6px 10px;cursor:pointer;font-size:.8rem;
  transition:all .2s;
}
.hdr-btn:hover{border-color:var(--accent);color:var(--accent)}

/* ─── Content ────────────────────────────────────────────────────────────────── */
.content{
  flex:1;padding:18px 16px 36px;
  display:flex;flex-direction:column;gap:14px;
  max-width:480px;margin:0 auto;width:100%;
}

/* ─── Connection card ────────────────────────────────────────────────────────── */
.conn-card{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--r);padding:14px 18px;box-shadow:var(--shadow);
  display:flex;align-items:center;gap:14px;
}

.dot{width:13px;height:13px;border-radius:50%;flex-shrink:0;position:relative}
.dot::after{
  content:'';position:absolute;inset:-5px;border-radius:50%;
  animation:ring 1.6s ease-out infinite;
}
.dot.ok{background:var(--green)}
.dot.ok::after{border:2px solid var(--green)}
.dot.wait{background:var(--orange)}
.dot.wait::after{border:2px solid var(--orange);animation-duration:.7s}
.dot.off{background:var(--muted)}
.dot.off::after{display:none}
.dot.err{background:var(--red)}
.dot.err::after{border:2px solid var(--red)}
@keyframes ring{0%{transform:scale(1);opacity:.8}100%{transform:scale(2.4);opacity:0}}

.conn-info{display:flex;flex-direction:column;gap:2px}
.conn-label{font-size:.95rem;font-weight:600}
.conn-sub{font-size:.75rem;color:var(--muted)}

/* ─── Main status card ───────────────────────────────────────────────────────── */
.status-card{
  padding:34px 20px 28px;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  text-align:center;border-radius:var(--r);
  border:1px solid var(--border);
  transition:all .4s ease;box-shadow:var(--shadow);
}
.status-card.ok{
  background:linear-gradient(160deg,var(--bg2),var(--bg3));
  border-color:rgba(16,255,180,.2);
}
.status-card.warn{
  background:linear-gradient(160deg,#160e00,#241800);
  border-color:rgba(245,158,11,.4);
  animation:warn-glow 2s ease-in-out infinite;
}
.status-card.alarm{
  background:linear-gradient(160deg,#160000,#250606);
  border-color:rgba(239,68,68,.5);
  animation:alarm-glow .65s ease-in-out infinite;
}
@keyframes warn-glow{
  0%,100%{box-shadow:0 8px 32px rgba(245,158,11,.08)}
  50%{box-shadow:0 8px 56px rgba(245,158,11,.3)}
}
@keyframes alarm-glow{
  0%,100%{box-shadow:0 8px 32px rgba(239,68,68,.15)}
  50%{box-shadow:0 8px 72px rgba(239,68,68,.55)}
}

.st-icon{font-size:3.8rem;line-height:1;transition:all .4s}
.st-title{font-size:1.7rem;font-weight:800;letter-spacing:2.5px;transition:color .4s}
.status-card.ok   .st-title{color:var(--accent)}
.status-card.warn .st-title{color:var(--orange)}
.status-card.alarm .st-title{color:var(--red)}
.st-sub{font-size:.88rem;color:var(--muted)}

/* ─── Section title ──────────────────────────────────────────────────────────── */
.sec-title{
  font-size:.7rem;font-weight:700;letter-spacing:2.5px;
  text-transform:uppercase;color:var(--muted);margin-bottom:10px;
}

/* ─── Control buttons ────────────────────────────────────────────────────────── */
.ctrl-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}

.ctrl-btn{
  width:100%;padding:22px 12px;
  background:var(--bg2);border:2px solid var(--border);
  border-radius:var(--r);cursor:pointer;color:var(--text);
  display:flex;flex-direction:column;align-items:center;gap:7px;
  transition:all .25s ease;box-shadow:var(--shadow);
  -webkit-tap-highlight-color:transparent;user-select:none;
}
.ctrl-btn:not(:disabled):hover{transform:translateY(-2px)}
.ctrl-btn:not(:disabled):active{transform:scale(.97)}
.ctrl-btn:disabled{opacity:.38;cursor:not-allowed}

.ctrl-btn.on{
  background:linear-gradient(135deg,rgba(16,255,180,.1),rgba(59,130,246,.08));
  border-color:var(--accent);
  box-shadow:0 4px 28px rgba(16,255,180,.18);
}
.ctrl-btn.off{background:var(--bg2);border-color:rgba(255,255,255,.14)}
.ctrl-btn.unk{border-color:rgba(255,255,255,.09)}

.btn-ico{font-size:2rem;line-height:1}
.btn-lbl{font-size:.7rem;font-weight:700;letter-spacing:1.8px;color:var(--muted)}
.btn-st{
  font-size:.85rem;font-weight:800;letter-spacing:.5px;
  padding:4px 14px;border-radius:20px;transition:all .25s;
}
.ctrl-btn.on  .btn-st{background:var(--green-d);color:var(--green)}
.ctrl-btn.off .btn-st{background:var(--red-d);color:var(--red)}
.ctrl-btn.unk .btn-st{background:var(--bg3);color:var(--muted)}

/* ─── Log ────────────────────────────────────────────────────────────────────── */
.log-box{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--r-sm);padding:10px;
  max-height:230px;overflow-y:auto;
  display:flex;flex-direction:column;gap:3px;
}
.log-box::-webkit-scrollbar{width:3px}
.log-box::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}

.log-row{
  display:flex;gap:8px;align-items:baseline;
  padding:5px 8px;border-radius:6px;font-size:.76rem;
  animation:slide-in .2s ease;
}
@keyframes slide-in{from{opacity:0;transform:translateX(-6px)}to{opacity:1;transform:none}}
.log-t{color:var(--muted);flex-shrink:0;font-variant-numeric:tabular-nums}
.log-m{color:var(--text)}
.log-row.ok   {background:var(--green-d)}  .log-row.ok   .log-m{color:var(--green)}
.log-row.err  {background:var(--red-d)}    .log-row.err  .log-m{color:var(--red)}
.log-row.warn {background:var(--orange-d)} .log-row.warn .log-m{color:var(--orange)}
.log-row.rx   {background:var(--accent-d)} .log-row.rx   .log-m{color:var(--accent)}

/* ─── Settings modal ─────────────────────────────────────────────────────────── */
.modal-bg{
  position:fixed;inset:0;z-index:200;
  background:rgba(0,0,0,.7);backdrop-filter:blur(8px);
  display:flex;align-items:flex-end;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .25s;
}
.modal-bg.open{opacity:1;pointer-events:all}

.modal{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--r) var(--r) 0 0;
  padding:24px 20px 36px;width:100%;max-width:480px;
  transform:translateY(100%);transition:transform .3s ease;
}
.modal-bg.open .modal{transform:translateY(0)}

.modal-title{font-size:1rem;font-weight:700;margin-bottom:18px}
.modal label{display:block;font-size:.75rem;color:var(--muted);margin-bottom:5px;margin-top:12px;font-weight:600;letter-spacing:1px;text-transform:uppercase}
.modal input{
  width:100%;background:var(--bg3);border:1px solid var(--border);
  color:var(--text);border-radius:8px;padding:10px 12px;font-size:.85rem;
  outline:none;
}
.modal input:focus{border-color:var(--accent)}
.modal-hint{font-size:.72rem;color:var(--muted);margin-top:10px;line-height:1.5}
.modal-actions{display:flex;gap:10px;margin-top:18px}
.btn-save{
  flex:1;padding:11px;background:var(--accent);color:#000;
  border:none;border-radius:9px;font-weight:700;cursor:pointer;font-size:.9rem;
}
.btn-cancel{
  padding:11px 18px;background:var(--bg3);color:var(--muted);
  border:none;border-radius:9px;cursor:pointer;font-size:.9rem;
}

/* ─── Alarm body flash ───────────────────────────────────────────────────────── */
@keyframes body-flash{0%,100%{background:#0a0e1a}50%{background:#190202}}
body.alarming{animation:body-flash .75s ease-in-out infinite}

/* ─── PIN screen ─────────────────────────────────────────────────────────────── */
#pin-screen{
  position:fixed;inset:0;z-index:500;
  background:linear-gradient(135deg,#06091a 0%,#0d1433 100%);
  display:flex;align-items:center;justify-content:center;
}
#pin-screen.hidden{display:none!important}

.pin-inner{display:flex;flex-direction:column;align-items:center;gap:20px;width:100%;max-width:320px;padding:0 24px}

.pin-logo{width:56px;height:56px;filter:drop-shadow(0 0 16px rgba(16,255,180,.5))}

.pin-title{font-size:1.2rem;font-weight:800;letter-spacing:2px;
  background:linear-gradient(135deg,#10ffb4,#3b82f6);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.pin-label{font-size:.85rem;color:var(--muted);letter-spacing:1px;min-height:1.2em;text-align:center}

.pin-dots{display:flex;gap:16px;margin:4px 0}
.pin-dot{
  width:16px;height:16px;border-radius:50%;
  border:2px solid var(--muted);
  transition:all .15s ease;
}
.pin-dot.filled{background:var(--accent);border-color:var(--accent);
  box-shadow:0 0 10px rgba(16,255,180,.5)}

@keyframes shake{
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-8px)}
  40%{transform:translateX(8px)}
  60%{transform:translateX(-6px)}
  80%{transform:translateX(6px)}
}
#pin-dots.shake{animation:shake .55s ease}

.pin-pad{
  display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:100%;
}
.pin-btn{
  aspect-ratio:1;border-radius:50%;
  background:var(--bg2);border:1px solid var(--border);
  color:var(--text);font-size:1.4rem;font-weight:600;
  cursor:pointer;transition:all .15s;
  -webkit-tap-highlight-color:transparent;
}
.pin-btn:active{transform:scale(.92);background:var(--bg3)}
.pin-btn-del{font-size:1.1rem;color:var(--muted)}
.pin-btn-reset{font-size:1.1rem;color:var(--muted)}

.pin-forgot{
  background:none;border:none;color:var(--muted);
  font-size:.75rem;cursor:pointer;margin-top:4px;
  text-decoration:underline;
}