:root{
  --navy:#0f2740; --navy-2:#163a5f; --teal:#3ec6b8; --teal-d:#2fa093;
  --ink:#1c2733; --muted:#6b7a8d; --line:#e3e8ee; --bg:#f5f7fa; --card:#fff;
  --danger:#c0392b; --ok:#2e9e6b; --radius:12px;
  --shadow:0 1px 2px rgba(16,39,64,.06),0 4px 16px rgba(16,39,64,.06);
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.5;
}
a{color:var(--teal-d)}
h1{font-size:1.6rem;margin:.2rem 0}
h2{font-size:1.15rem;margin:0 0 .6rem}
h3{font-size:1rem;margin:0 0 .4rem}
.muted{color:var(--muted)}

/* Top bar */
.topbar{
  display:flex;align-items:center;gap:1.2rem;
  background:var(--navy);color:#fff;padding:.7rem 1.2rem;
}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:600}
.brand-mark{
  display:grid;place-items:center;width:30px;height:30px;border-radius:8px;
  background:var(--teal);color:var(--navy);font-weight:800;
}
.brand-lg .brand-mark{width:40px;height:40px;font-size:1.3rem}
.brand-name{white-space:nowrap}
.nav{display:flex;gap:.3rem;margin-left:1rem}
.nav a{
  color:#cdd8e6;text-decoration:none;padding:.4rem .7rem;border-radius:8px;font-size:.95rem;
}
.nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav a.active{background:var(--teal);color:var(--navy);font-weight:600}
.logout-form{margin-left:auto}

/* Layout */
.content{max-width:960px;margin:1.6rem auto;padding:0 1.2rem}
.page-head{margin-bottom:1.2rem}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.2rem;margin-bottom:1.2rem;box-shadow:var(--shadow);
}
.subhead{margin-top:1.2rem}

/* Buttons */
.btn{
  display:inline-block;border:1px solid var(--line);background:#fff;color:var(--ink);
  padding:.55rem .95rem;border-radius:9px;font-size:.95rem;cursor:pointer;
  text-decoration:none;font-weight:500;transition:.15s;
}
.btn:hover{border-color:#c9d2dd;background:#fbfcfe}
.btn-primary{background:var(--teal);border-color:var(--teal);color:var(--navy);font-weight:600}
.btn-primary:hover{background:var(--teal-d);border-color:var(--teal-d);color:#fff}
.btn-danger{color:var(--danger);border-color:#f0cfc9}
.btn-danger:hover{background:#fbece9}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.3);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-sm{padding:.32rem .6rem;font-size:.85rem}
.actions-row{display:flex;gap:.6rem;flex-wrap:wrap;margin:1rem 0}

/* Cards / stats */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-bottom:1.2rem}
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.1rem;display:flex;flex-direction:column;gap:.2rem;box-shadow:var(--shadow);
}
.stat-num{font-size:1.9rem;font-weight:700;color:var(--navy)}
.stat-label{color:var(--muted);font-size:.9rem}
.stat-dot{width:12px;height:12px;border-radius:50%;display:inline-block}
.stat-dot.ok{background:var(--ok)} .stat-dot.off{background:#c3ccd6}

.steps{margin:.4rem 0 0 1.1rem;color:var(--ink)}
.steps li{margin:.3rem 0}

/* Forms */
label{display:block;font-weight:600;font-size:.9rem;margin:.7rem 0 .3rem}
input[type=text],input[type=email],input[type=password],select,textarea{
  width:100%;padding:.6rem .7rem;border:1px solid var(--line);border-radius:9px;
  font:inherit;color:var(--ink);background:#fff;
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--teal);border-color:var(--teal)}
textarea{resize:vertical}
.inline-form{display:flex;gap:.6rem;align-items:end;flex-wrap:wrap}
.inline-form label{margin:0}
.inline-form input{min-width:260px;flex:1}
.note{background:#fff8e8;border:1px solid #f0e2bd;border-radius:9px;padding:.7rem .9rem}

/* Tables */
.table{width:100%;border-collapse:collapse;margin-top:.5rem}
.table th,.table td{text-align:left;padding:.55rem .5rem;border-bottom:1px solid var(--line);font-size:.93rem}
.table th{color:var(--muted);font-weight:600}

/* Video grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem}
.video-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.thumb{position:relative;aspect-ratio:16/10;background:#0c1c2e;display:grid;place-items:center}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb-placeholder{color:#8aa;opacity:.7;font-size:.9rem}
.badge{position:absolute;right:.5rem;bottom:.5rem;background:rgba(0,0,0,.72);color:#fff;padding:.1rem .4rem;border-radius:6px;font-size:.8rem}
.video-card-body{padding:.7rem .8rem}
.video-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.video-card-actions{display:flex;gap:.4rem;margin-top:.5rem;flex-wrap:wrap}

/* Recorder */
.recorder-stage{background:#0c1c2e;border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;display:grid;place-items:center}
.video-frame{width:100%;height:100%;object-fit:contain;background:#0c1c2e}
.recorder-controls{display:flex;gap:.6rem;flex-wrap:wrap;margin:.9rem 0}
.save-row{display:flex;gap:.6rem;align-items:end;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:.9rem}
.save-row label{margin:0}
.save-row input{flex:1;min-width:220px}

/* Alerts / empty */
.alert{padding:.7rem .9rem;border-radius:9px;margin:.6rem 0}
.alert-error{background:#fbece9;border:1px solid #f0cfc9;color:var(--danger)}
.empty{color:var(--muted);padding:1.5rem 0}
.result{border-color:var(--teal)}

/* Login */
.login-body{display:grid;place-items:center;min-height:100vh;background:var(--navy)}
.login-card{background:#fff;border-radius:16px;padding:2rem;width:min(380px,92vw);box-shadow:0 12px 40px rgba(0,0,0,.3)}
.login-card .brand{justify-content:center;margin-bottom:1.2rem;color:var(--navy)}
.login-form{display:flex;flex-direction:column}

/* Toast */
.toast{position:fixed;left:50%;bottom:1.4rem;transform:translateX(-50%);
  background:var(--navy);color:#fff;padding:.7rem 1.1rem;border-radius:10px;
  box-shadow:var(--shadow);z-index:50;max-width:90vw}
.toast.err{background:var(--danger)}

@media(max-width:640px){
  .topbar{flex-wrap:wrap;gap:.6rem}
  .nav{margin-left:0;order:3;width:100%}
  .logout-form{margin-left:auto}
}