:root {
  --bg:#0a0e12; --bg-grid:#0e141b; --panel:#141b23; --panel-2:#182029;
  --line:#243140; --text:#d6e0ea; --text-dim:#7c8b9a;
  --accent:#2fd6c6; --accent-2:#f6b73c; --ok:#34d399; --warn:#f6b73c; --err:#ef5d5d;
  --mono: ui-monospace, "Cascadia Code", "SFMono-Regular", "Consolas", monospace;
  --sans: "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin:0; height:100%; background:var(--bg); color:var(--text); font-family:var(--sans); -webkit-font-smoothing:antialiased; }
body { background-image: linear-gradient(transparent 31px, rgba(36,49,64,0.18) 32px), linear-gradient(90deg, transparent 31px, rgba(36,49,64,0.18) 32px); background-size:32px 32px; min-height:100vh; display:flex; flex-direction:column; }
.scanlines { position:fixed; inset:0; pointer-events:none; z-index:9999; background:repeating-linear-gradient(to bottom, rgba(255,255,255,0.012) 0 1px, transparent 1px 3px); mix-blend-mode:overlay; }

/* Top bar */
.topbar { display:flex; align-items:center; justify-content:space-between; padding:14px 22px; background:linear-gradient(180deg, var(--panel-2), var(--panel)); border-bottom:1px solid var(--line); box-shadow:0 6px 22px rgba(0,0,0,0.45); position:sticky; top:0; z-index:50; }
.brand { display:flex; align-items:center; gap:14px; }
.logo-mark { display:grid; place-items:center; width:54px; height:54px; border-radius:13px; background:radial-gradient(120% 120% at 30% 20%, #1c2731, #0d141b); border:1px solid var(--line); box-shadow:inset 0 0 18px rgba(47,214,198,0.10); }
.brand-title { font-size:23px; font-weight:700; letter-spacing:0.2px; }
.brand-sub { font-family:var(--mono); font-size:12.5px; letter-spacing:2px; text-transform:uppercase; color:var(--accent); opacity:0.9; }
.topbar-meta { display:flex; align-items:center; gap:22px; }
.stat { display:flex; align-items:center; gap:7px; font-family:var(--mono); font-size:17px; padding:8px 14px; border-radius:9px; background:var(--bg-grid); border:1px solid var(--line); }
.stat-sep { color:var(--text-dim); }
.stat-label { color:var(--text-dim); font-size:12px; letter-spacing:1px; margin-left:4px; }
.stat-led { width:9px; height:9px; border-radius:50%; background:var(--ok); box-shadow:0 0 9px var(--ok); }
.clock { font-family:var(--mono); text-align:right; line-height:1.2; min-width:156px; }
.clock-date { font-size:14px; letter-spacing:0.5px; color:var(--text); font-weight:700; }
.clock-time { font-size:22px; letter-spacing:1px; color:var(--accent); }
.user-box { display:flex; align-items:center; gap:12px; }
.user-name { font-family:var(--mono); font-size:15px; color:var(--text); }
.user-name b { color:var(--accent); }
.linkbtn { font-size:13px; color:var(--text-dim); text-decoration:none; padding:8px 13px; border:1px solid var(--line); border-radius:8px; background:var(--bg-grid); cursor:pointer; }
.linkbtn:hover { border-color:var(--accent); color:var(--accent); }
.topbar-logo { height:54px; width:auto; display:block; margin-left:6px; padding-left:18px; border-left:1px solid var(--line); }

/* Grid */
.grid { flex:1; display:grid; gap:16px; padding:18px 22px 28px; grid-template-columns:repeat(auto-fill, minmax(340px, 1fr)); align-content:start; }
.tile { background:var(--panel); border:1px solid var(--line); border-radius:13px; overflow:hidden; display:flex; flex-direction:column; box-shadow:0 10px 26px rgba(0,0,0,0.4); transition:border-color .18s, transform .18s, box-shadow .18s; animation:rise .4s both; }
.tile:hover { border-color:var(--accent); transform:translateY(-2px); box-shadow:0 16px 34px rgba(0,0,0,0.55), 0 0 0 1px rgba(47,214,198,0.25); }
@keyframes rise { from { opacity:0; transform:translateY(10px); } }
.tile-head { display:flex; align-items:center; justify-content:space-between; padding:10px 14px; background:linear-gradient(180deg, var(--panel-2), var(--panel)); border-bottom:1px solid var(--line); }
.tile-name { font-weight:650; font-size:15px; }
.tile-host { font-family:var(--mono); font-size:11px; color:var(--text-dim); }
.tile-status { display:flex; align-items:center; gap:7px; }
.led { width:10px; height:10px; border-radius:50%; background:var(--text-dim); transition:background .2s, box-shadow .2s; }
.led.connecting { background:var(--warn); box-shadow:0 0 10px var(--warn); animation:blink 1s infinite; }
.led.connected { background:var(--ok); box-shadow:0 0 10px var(--ok); }
.led.error { background:var(--err); box-shadow:0 0 10px var(--err); }
@keyframes blink { 50% { opacity:.35; } }
.status-text { font-family:var(--mono); font-size:11px; color:var(--text-dim); }
.tile-screen { position:relative; background:#05080b; aspect-ratio:4 / 3; cursor:zoom-in; display:grid; place-items:center; }
.tile-screen img { display:block; max-width:100%; max-height:100%; width:auto; height:auto; }
.overlay-screen img { width:100%; height:100%; max-width:none; max-height:none; object-fit:contain; }
.tile-overlaymsg { position:absolute; inset:0; display:grid; place-items:center; font-family:var(--mono); font-size:12px; color:var(--text-dim); text-align:center; padding:12px; pointer-events:none; }
.tile-foot { display:flex; justify-content:space-between; align-items:center; padding:7px 14px; font-family:var(--mono); font-size:10.5px; color:var(--text-dim); border-top:1px solid var(--line); letter-spacing:1px; }
.tag { color:var(--accent); }
.badge-rw { color:var(--accent-2) !important; }

/* Overlay */
.overlay { position:fixed; inset:0; z-index:200; background:rgba(4,7,10,0.93); backdrop-filter:blur(4px); display:flex; flex-direction:column; }
.overlay[hidden] { display:none; }
.overlay-bar { display:flex; align-items:center; justify-content:space-between; padding:12px 20px; border-bottom:1px solid var(--line); background:var(--panel); }
.overlay-title { font-size:19px; font-weight:700; }
.overlay-actions { display:flex; align-items:center; gap:24px; }
.toggle { display:flex; align-items:center; gap:9px; font-size:16px; color:var(--text); cursor:pointer; }
.toggle input { accent-color:var(--accent-2); width:22px; height:22px; }
.btn-close { background:var(--bg-grid); color:var(--text); border:1px solid var(--line); width:46px; height:46px; border-radius:9px; font-size:22px; cursor:pointer; }
.btn-close:hover { border-color:var(--err); color:var(--err); }
.overlay-screen { flex:1; min-height:0; display:flex; align-items:center; justify-content:center; padding:16px; overflow:hidden; }

/* Login */
.login-body { display:flex; align-items:center; justify-content:center; }
.login-card { width:320px; padding:34px 30px; margin-top:-6vh; background:var(--panel); border:1px solid var(--line); border-radius:16px; box-shadow:0 20px 60px rgba(0,0,0,0.55); display:flex; flex-direction:column; align-items:center; }
.login-logo { display:grid; place-items:center; width:64px; height:64px; border-radius:14px; background:radial-gradient(120% 120% at 30% 20%, #1c2731, #0d141b); border:1px solid var(--line); box-shadow:inset 0 0 20px rgba(47,214,198,0.12); margin-bottom:14px; }

.login-logo-img { width:250px; max-width:90%; height:auto; display:block; margin:0 auto 16px; }
.login-title { font-size:20px; font-weight:700; }
.login-sub { font-family:var(--mono); font-size:11px; letter-spacing:3px; color:var(--accent); margin-bottom:22px; }
.login-input { width:100%; padding:12px 14px; margin-bottom:12px; border-radius:9px; background:var(--bg-grid); border:1px solid var(--line); color:var(--text); font-size:14px; }
.login-input:focus { outline:none; border-color:var(--accent); }
.login-btn { width:100%; padding:12px; margin-top:6px; border:none; border-radius:9px; cursor:pointer; background:var(--accent); color:#04201d; font-weight:700; font-size:15px; }
.login-btn:hover { filter:brightness(1.08); }

/* Admin */
.admin-wrap { max-width:1100px; margin:0 auto; padding:24px 22px 60px; }
.admin-h { font-size:18px; font-weight:700; margin:22px 0 10px; }
.warn { background:rgba(246,93,93,0.12); border:1px solid var(--err); color:#ffb4b4; padding:10px 14px; border-radius:9px; margin-bottom:16px; font-size:13px; }
table.users { width:100%; border-collapse:collapse; font-size:13px; }
table.users th, table.users td { padding:9px 12px; border-bottom:1px solid var(--line); text-align:left; white-space:nowrap; }
table.users th { color:var(--text-dim); font-weight:600; font-size:11px; letter-spacing:1px; }
.perm-sel { background:var(--bg-grid); color:var(--text); border:1px solid var(--line); border-radius:6px; padding:4px 6px; font-size:12px; }
.perm-sel.changed { border-color:var(--accent-2); box-shadow:0 0 0 2px rgba(246,183,60,0.30); }
.mini { padding:6px 11px; border:1px solid var(--line); border-radius:7px; background:var(--bg-grid); color:var(--text); cursor:pointer; font-size:12px; }
.mini:hover { border-color:var(--accent); color:var(--accent); }
.mini.danger:hover { border-color:var(--err); color:var(--err); }
.field { background:var(--bg-grid); color:var(--text); border:1px solid var(--line); border-radius:7px; padding:8px 10px; font-size:13px; }
.row { display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin-bottom:10px; }
.tile-screen.rw { cursor:crosshair; }
.savebtn { padding:8px 18px; font-size:14px; width:auto; }
.savebtn:disabled { opacity:0.4; cursor:default; filter:grayscale(0.4); }
.savebtn.active { box-shadow:0 0 0 3px rgba(47,214,198,0.30); }
.dirty-info { font-size:13px; color:var(--accent-2); font-weight:600; }
table.mc { width:100%; border-collapse:collapse; font-size:13px; }
table.mc th, table.mc td { padding:8px 10px; border-bottom:1px solid var(--line); text-align:left; }
table.mc th { color:var(--text-dim); font-weight:600; font-size:11px; letter-spacing:1px; }
table.mc input[type=text], table.mc input[type=number], table.mc input[type=password] { background:var(--bg-grid); color:var(--text); border:1px solid var(--line); border-radius:6px; padding:6px 8px; font-size:13px; }
table.mc input[type=text].nm { width:120px; } table.mc input.host { width:130px; } table.mc input.port { width:74px; } table.mc input.pw { width:150px; }

/* Toast */
.toast { position:fixed; top:18px; left:50%; transform:translateX(-50%); background:var(--ok); color:#04201d; font-weight:700; font-size:13px; padding:10px 18px; border-radius:10px; z-index:10000; box-shadow:0 8px 26px rgba(0,0,0,0.5); animation:toastIn .2s ease; }
.toast.bad { background:var(--err); color:#2a0606; }
.toast[hidden] { display:none; }
@keyframes toastIn { from { opacity:0; transform:translate(-50%, -8px); } }

/* My-password modal */
.pw-overlay { align-items:center; justify-content:center; }
.pw-card { width:320px; background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:26px; box-shadow:0 20px 60px rgba(0,0,0,0.55); }
.pw-title { font-size:17px; font-weight:700; margin-bottom:16px; text-align:center; }
.pw-actions { display:flex; justify-content:flex-end; gap:10px; margin-top:8px; }


/* ===== 화면변동 강조 ===== */
.tile.offline .tile-screen img { display: none; }
.tile.changed { border-color: var(--accent-2) !important; box-shadow: 0 0 0 2px rgba(246,183,60,0.55), 0 0 26px rgba(246,183,60,0.28) !important; }
.tile.changed .led.connected { background: var(--accent-2); box-shadow: 0 0 12px var(--accent-2); }

/* ===== 현장 화면(키오스크) ===== */
.kiosk-bar { position: fixed; top: 0; left: 0; right: 0; height: 64px; z-index: 1000; display: none; align-items: center; justify-content: flex-end; gap: 10px; padding: 0 18px; background: rgba(10,14,18,0.72); border-bottom: 1px solid var(--line); }
.kiosk-bar button { background: rgba(20,27,35,0.9); color: var(--text); border: 1px solid var(--line); border-radius: 10px; padding: 9px 26px; font-size: 26px; cursor: pointer; }
.kiosk-bar button:hover { border-color: var(--accent); color: var(--accent); }
body.kiosk .kiosk-bar { display: flex; }
body.kiosk .topbar { display: none; }
body.kiosk .grid { height: calc(100vh - 64px); margin-top: 64px; padding: 10px; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); grid-auto-rows: 1fr; align-content: stretch; }
body.kiosk .tile { height: 100%; min-height: 0; }
body.kiosk .tile-screen { aspect-ratio: auto; flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; overflow: hidden; }
body.kiosk .tile-screen img { width: 100%; height: 100%; max-width: none; max-height: none; object-fit: contain; }
body.kiosk .tile-head { padding: 16px 24px; }
body.kiosk .tile-name { font-size: 32px; }
body.kiosk .tile-host { font-size: 18px; }
body.kiosk .status-text { font-size: 18px; }
body.kiosk .led { width: 20px; height: 20px; }
body.kiosk .tile-foot { font-size: 13px; padding: 9px 20px; }
body.kiosk .overlay { top: 64px; }   /* 상단 순환/나가기 바에 안 가리게 */
body.kiosk .overlay-bar { padding: 14px 24px; }
body.kiosk .overlay-title { font-size: 44px; }
body.kiosk .overlay-actions { display: none; }

/* ===== 반응형 (태블릿/모바일) ===== */
@media (max-width: 820px) {
  .topbar { flex-wrap: wrap; gap: 10px 14px; padding: 12px 16px; }
  .topbar-meta { flex-wrap: wrap; gap: 12px; row-gap: 8px; }
}
@media (max-width: 560px) {
  .topbar { padding: 10px 12px; gap: 8px 12px; }
  .brand { gap: 10px; }
  .logo-mark { width: 44px; height: 44px; }
  .brand-title { font-size: 18px; }
  .brand-sub { display: none; }
  .topbar-meta { gap: 10px; row-gap: 8px; }
  .stat { font-size: 14px; padding: 6px 10px; }
  .stat-label { display: none; }
  .clock { min-width: auto; text-align: left; }
  .clock-time { font-size: 16px; }
  .clock-date { font-size: 12px; }
  .user-name { font-size: 13px; }
  .linkbtn { font-size: 12px; padding: 7px 10px; }
  .topbar-logo { height: 32px; padding-left: 10px; margin-left: 0; }
  .grid { grid-template-columns: 1fr; padding: 12px; gap: 12px; }
  .login-card { width: 92vw; max-width: 340px; padding: 28px 22px; }
  .login-logo-img { width: 200px; }
  .overlay-bar { padding: 10px 12px; }
  .overlay-title { font-size: 15px; }
  .overlay-actions { gap: 14px; }
  .toggle { font-size: 14px; gap: 7px; }
  .toggle input { width: 20px; height: 20px; }
  .btn-close { width: 40px; height: 40px; font-size: 19px; }
  .admin-wrap { padding: 16px 12px 50px; }
}