:root{--brand:#43b649;--brand-dark:#2d8f34;--bg:#f3f7f4;--card:#fff;--side:#18241b;--text:#122217;--muted:#6a7d70;--border:#e2ebe4;--danger:#d84a4a}
*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}code{background:#eef5ef;padding:2px 6px;border-radius:6px}
.layout{display:grid;grid-template-columns:270px 1fr;min-height:100vh}.sidebar{background:linear-gradient(180deg,var(--side),#101811);color:#fff;padding:22px;position:sticky;top:0;height:100vh;overflow:auto}.brand{display:flex;gap:12px;align-items:center;margin-bottom:20px}.brand-icon{width:50px;height:50px;background:var(--brand);border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:22px}
.nav-title{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:#93a495;margin:18px 10px 10px}.nav-link{display:block;padding:12px 14px;border-radius:12px;color:#edf4ee;margin-bottom:6px;font-weight:700}.nav-link:hover,.nav-link.active{background:rgba(67,182,73,.16)}
.main{padding:24px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}.topbar h1{margin:0}.muted{color:var(--muted)}
.card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px;box-shadow:0 16px 40px rgba(17,29,20,.08)}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.metric .value{font-size:34px;font-weight:900;margin-top:12px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.three-col{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.form-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.form-label{display:block;margin-bottom:7px;font-size:14px;font-weight:700}.form-control{width:100%;padding:13px 14px;background:#fff;border:1px solid var(--border);border-radius:14px;outline:none}.form-control:focus{border-color:#8cd394;box-shadow:0 0 0 4px rgba(67,182,73,.12)}
button,.btn{border:none;background:var(--brand);color:#fff;padding:12px 18px;border-radius:12px;font-weight:700;cursor:pointer}.btn:hover,button:hover{background:var(--brand-dark)}.btn-outline{background:#fff;color:var(--brand);border:1px solid var(--border)}.btn-danger{background:var(--danger)}
.alert{padding:14px 16px;border-radius:14px;margin:0 0 18px}.alert-success{background:#eaf8eb;border:1px solid #c8ebcd;color:#205f28}.alert-danger{background:#ffeaea;border:1px solid #ffd0d0;color:#8b1f1f}
.badge{display:inline-flex;align-items:center;padding:8px 11px;border-radius:999px;font-size:12px;font-weight:700}.badge-online{background:#eaf8ec;color:#26732d}.badge-offline{background:#eef1ef;color:#66746a}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid var(--border);text-align:left;font-size:14px;vertical-align:top}th{font-size:12px;text-transform:uppercase;color:#62766a}
.login-page{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr}.login-brand{background:linear-gradient(140deg,#43b649,#25752d);color:#fff;padding:46px;display:flex;flex-direction:column;justify-content:space-between}.login-panel{display:flex;align-items:center;justify-content:center;padding:28px}.login-box{width:100%;max-width:460px;background:#fff;border:1px solid var(--border);border-radius:26px;padding:32px}.login-logo{width:64px;height:64px;border-radius:18px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:900;margin-bottom:18px}
.codebox{background:#0e1510;color:#d8f4dc;border-radius:16px;padding:16px;overflow:auto;font-size:12px;white-space:pre-wrap}.toolbar{display:flex;gap:10px;flex-wrap:wrap}.small{font-size:12px}
.preview-screen{width:100%;max-width:960px;aspect-ratio:16/9;background:#111;position:relative;overflow:hidden;border-radius:18px;border:4px solid #0b0f0c}.preview-region{position:absolute;overflow:hidden;background:#000}.preview-region video,.preview-region img{width:100%;height:100%;object-fit:cover}.qr-box{display:grid;place-items:center;width:240px;height:240px;background:#fff;border-radius:16px;border:1px solid var(--border);overflow:hidden}
@media(max-width:1100px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.two-col,.three-col,.form-grid,.form-grid-3{grid-template-columns:1fr}}@media(max-width:860px){.layout{grid-template-columns:1fr}.sidebar{position:relative;height:auto}.login-page{grid-template-columns:1fr}.login-brand{display:none}}