:root {
  --bg: #070a12; --card: #0f172a; --card-hover: #1e293b; --border: #1e293b;
  --primary: #10b981; --primary-hover: #059669; --accent: #6366f1;
  --text: #f8fafc; --muted: #94a3b8; --danger: #ef4444; --warning: #f59e0b;
}
* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Plus Jakarta Sans', sans-serif; }
body { background: radial-gradient(1200px 600px at 50% -200px, rgba(16,185,129,.10), transparent), var(--bg); color: var(--text); min-height: 100vh; }
a { color: var(--primary); text-decoration: none; }
code { background: #0b1220; border: 1px solid var(--border); padding: .1rem .4rem; border-radius: .3rem; font-size: .85em; color: #a5b4fc; }
.hidden { display: none !important; }
.muted { color: var(--muted); } .small { font-size: .82rem; } .mt { margin-top: 1rem; } .center { text-align: center; }
.accent { color: var(--primary) !important; }

nav { background: rgba(15,23,42,.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 1rem 2.5rem; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 50; }
.brand { font-size: 1.3rem; font-weight: 800; display: flex; align-items: center; gap: .6rem; cursor: pointer; }
.brand span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a { color: var(--muted); font-size: .9rem; font-weight: 500; transition: .2s; }
.nav-links a:hover { color: #fff; }
#navGuest, #navUser { display: inline-flex; align-items: center; gap: .75rem; }

.btn { background: var(--primary); color: #fff; border: none; padding: .65rem 1.4rem; border-radius: .6rem; font-weight: 600; font-size: .9rem; cursor: pointer; transition: .2s; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; white-space: nowrap; }
.btn:hover { background: var(--primary-hover); transform: translateY(-1px); }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.btn-outline { background: transparent; border: 1px solid var(--border); }
.btn-outline:hover { background: var(--card-hover); }
.btn-accent { background: var(--accent); } .btn-accent:hover { background: #4f46e5; }
.btn-danger { background: var(--danger); } .btn-danger:hover { background: #dc2626; }
.btn-sm { padding: .4rem .8rem; font-size: .8rem; border-radius: .4rem; }
.btn-lg { padding: .85rem 2rem; font-size: 1rem; }
.btn-block { width: 100%; margin-top: .5rem; }

.badge { font-size: .72rem; padding: .2rem .55rem; border-radius: 9999px; text-transform: uppercase; font-weight: 700; letter-spacing: .5px; border: 1px solid transparent; }
.badge-connected, .badge-sent, .badge-approved, .badge-active { background: rgba(16,185,129,.15); color: #34d399; border-color: rgba(16,185,129,.3); }
.badge-disconnected, .badge-failed, .badge-rejected, .badge-suspended, .badge-expired { background: rgba(239,68,68,.15); color: #f87171; border-color: rgba(239,68,68,.3); }
.badge-scanning, .badge-connecting, .badge-pending, .badge-media, .badge-bulk { background: rgba(245,158,11,.15); color: #fbbf24; border-color: rgba(245,158,11,.3); }
.badge-text { background: rgba(99,102,241,.15); color: #a5b4fc; border-color: rgba(99,102,241,.3); }

.view { display: none; animation: fade .25s ease; } .view.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.hero { max-width: 1000px; margin: 5rem auto 3rem; text-align: center; padding: 0 1.5rem; }
.hero-badge { display: inline-block; background: rgba(99,102,241,.15); color: #a5b4fc; border: 1px solid rgba(99,102,241,.3); padding: .4rem 1rem; border-radius: 9999px; font-size: .85rem; font-weight: 600; margin-bottom: 1.5rem; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; letter-spacing: -1.5px; margin-bottom: 1.5rem; }
.hero h1 span { background: linear-gradient(135deg, #10b981, #6366f1); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 1.15rem; color: var(--muted); max-width: 680px; margin: 0 auto 2.5rem; line-height: 1.6; }
.row-center { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; max-width: 1100px; margin: 3rem auto 5rem; padding: 0 1.5rem; }
.feature-card { background: var(--card); border: 1px solid var(--border); border-radius: 1rem; padding: 1.75rem; transition: .2s; }
.feature-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.feature-card h3 { margin-bottom: .4rem; } .feature-card p { color: var(--muted); font-size: .9rem; line-height: 1.5; }
.feature-icon { width: 44px; height: 44px; border-radius: .75rem; background: rgba(16,185,129,.15); display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; font-size: 1.25rem; }

.container { max-width: 1240px; margin: 2rem auto; padding: 0 1.5rem; }
.page-title { font-size: 2.2rem; margin: 2rem 0 .5rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 1rem; padding: 1.5rem; margin-bottom: 1.5rem; overflow-x: auto; }
.card h2 { font-size: 1.1rem; font-weight: 700; margin-bottom: 1rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1.4fr auto; gap: .75rem; align-items: center; margin-bottom: .75rem; }
.row { display: flex; gap: .5rem; align-items: center; }

.plans-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem; margin-top: 2.5rem; }
.plan { background: var(--card); border: 1px solid var(--border); border-radius: 1rem; padding: 2rem 1.5rem; text-align: center; transition: .2s; }
.plan:hover { transform: translateY(-4px); } .plan.featured { border-color: var(--primary); box-shadow: 0 0 30px rgba(16,185,129,.12); }
.plan .price { font-size: 1.9rem; font-weight: 800; margin: 1rem 0; } .plan .price small { font-size: .8rem; color: var(--muted); }
.plan ul { list-style: none; color: var(--muted); font-size: .9rem; line-height: 2; margin-bottom: 1.5rem; }

.input { width: 100%; padding: .75rem 1rem; background: #070a12; border: 1px solid var(--border); border-radius: .5rem; color: #fff; font-size: .9rem; }
.input:focus { outline: none; border-color: var(--primary); }
.lbl { display: block; font-size: .8rem; color: var(--muted); margin: .75rem 0 .35rem; }
.keybox { background: #070a12; border: 1px solid var(--border); padding: .6rem .9rem; border-radius: .45rem; font-family: monospace; font-size: .82rem; color: #34d399; display: flex; justify-content: space-between; align-items: center; gap: .5rem; margin-bottom: .5rem; word-break: break-all; }
.keybox .lab { color: var(--muted); font-family: 'Plus Jakarta Sans'; font-size: .75rem; display: block; }

.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-box { background: var(--card); border: 1px solid var(--border); border-radius: .85rem; padding: 1.25rem; }
.stat-label { font-size: .75rem; color: var(--muted); text-transform: uppercase; font-weight: 700; letter-spacing: .5px; }
.stat-val { font-size: 1.7rem; font-weight: 800; margin-top: .25rem; }
.stat-sub { font-size: .78rem; color: var(--muted); margin-top: .35rem; }
.progress { height: 6px; background: #1f2937; border-radius: 4px; overflow: hidden; margin-top: .6rem; }
.progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), var(--accent)); transition: width .4s; }
.banner { background: rgba(239,68,68,.12); border: 1px solid rgba(239,68,68,.35); color: #fca5a5; padding: .9rem 1.2rem; border-radius: .75rem; margin-bottom: 1.25rem; font-weight: 600; }

.devices-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem; }
.device { background: #070a12; border: 1px solid var(--border); border-radius: .75rem; padding: 1.25rem; }
.device-head { display: flex; justify-content: space-between; align-items: flex-start; gap: .5rem; }
.device-id { font-family: monospace; font-size: .7rem; color: var(--muted); margin-top: .2rem; cursor: pointer; }
.qr-box { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .6rem; min-height: 210px; border: 1px dashed var(--border); border-radius: .5rem; padding: 1rem; margin-top: .9rem; text-align: center; }
.qr-box img { max-width: 190px; border: 5px solid #fff; border-radius: .5rem; }

table { width: 100%; border-collapse: collapse; font-size: .85rem; margin-top: .5rem; }
th, td { text-align: left; padding: .7rem .5rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: .75rem; text-transform: uppercase; }
td .btn { margin: .1rem; }
.code { background: #070a12; border: 1px solid var(--border); border-radius: .5rem; padding: 1rem; font-family: monospace; font-size: .8rem; overflow-x: auto; color: #a5b4fc; margin-top: .5rem; line-height: 1.5; }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.8); backdrop-filter: blur(8px); display: none; align-items: center; justify-content: center; z-index: 100; }
.modal.active { display: flex; }
.modal-box { background: var(--card); border: 1px solid var(--border); border-radius: 1.25rem; padding: 2.25rem; max-width: 420px; width: 92%; }
.modal-box h2 { margin-bottom: .35rem; }
.error { background: rgba(239,68,68,.12); color: #fca5a5; border-radius: .4rem; padding: .6rem .8rem; font-size: .85rem; margin-top: .75rem; }

.toast { position: fixed; bottom: 1.5rem; right: 1.5rem; background: var(--card); border: 1px solid var(--border); border-left: 4px solid var(--primary); padding: .9rem 1.2rem; border-radius: .6rem; font-size: .9rem; transform: translateY(150%); transition: transform .3s; z-index: 200; max-width: 380px; }
.toast.show { transform: none; } .toast.err { border-left-color: var(--danger); }

@media (max-width: 760px) {
  nav { padding: .9rem 1rem; flex-wrap: wrap; gap: .75rem; } .nav-links { flex-wrap: wrap; gap: .6rem; }
  .grid-4, .grid-2 { grid-template-columns: 1fr; }
}