:root {
  --bg: #0a0a0f;
  --bg-card: #111119;
  --bg-input: #1a1a28;
  --border: #232336;
  --text: #e0e0e0;
  --muted: #6b6b80;
  --accent: #6366f1;
  --accent-h: #818cf8;
  --green: #22c55e;
  --yellow: #eab308;
  --red: #ef4444;
  --radius: 10px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-h); }

/* Layout */
.container { max-width: 960px; margin: 0 auto; padding: 20px; }
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.navbar h1 { font-size: 20px; font-weight: 700; }
.navbar h1 span { color: var(--accent); }
.navbar-right { display: flex; align-items: center; gap: 12px; }
.navbar-user { color: var(--muted); font-size: 13px; }

/* Cards */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-header h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); font-weight: 600; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; border: none; border-radius: 8px; padding: 8px 16px; font-size: 13px; font-weight: 600; cursor: pointer; transition: .15s; }
.btn:hover { opacity: .85; }
.btn:disabled { opacity: .35; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-success { background: var(--green); color: #000; }
.btn-danger { background: var(--red); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-icon { padding: 6px 8px; }

/* Forms */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .5px; }
input[type="text"], input[type="password"], input[type="tel"], textarea, select {
  width: 100%; background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; color: var(--text); font-size: 14px; outline: none; font-family: inherit;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
textarea { resize: vertical; min-height: 70px; }

/* Badges */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.badge-green { background: rgba(34,197,94,.12); color: var(--green); }
.badge-yellow { background: rgba(234,179,8,.12); color: var(--yellow); }
.badge-red { background: rgba(239,68,68,.12); color: var(--red); }
.badge-muted { background: rgba(107,107,128,.12); color: var(--muted); }
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* Table */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 8px 10px; color: var(--muted); font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: .5px; border-bottom: 1px solid var(--border); }
td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:hover td { background: rgba(99,102,241,.03); }

/* Session grid */
.session-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.session-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; transition: .15s; cursor: pointer; }
.session-card:hover { border-color: var(--accent); }
.session-card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.session-card-name { font-weight: 600; font-size: 15px; }
.session-card-phone { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.session-card-actions { display: flex; gap: 6px; }

/* QR */
.qr-container { text-align: center; padding: 20px; }
.qr-container img { border-radius: 12px; max-width: 280px; box-shadow: 0 0 50px rgba(99,102,241,.12); }
.qr-container p { margin-top: 10px; color: var(--muted); font-size: 13px; }

/* Toast */
.toast { position: fixed; bottom: 20px; right: 20px; padding: 12px 20px; border-radius: 8px; font-size: 13px; font-weight: 500; z-index: 9999; animation: slideIn .3s; }
.toast-ok { background: #0d2818; border: 1px solid var(--green); color: var(--green); }
.toast-err { background: #2d1216; border: 1px solid var(--red); color: var(--red); }
@keyframes slideIn { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Login */
.login-wrap { display: flex; justify-content: center; align-items: center; min-height: 100vh; }
.login-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 40px; width: 380px; max-width: 90vw; }
.login-card h1 { text-align: center; margin-bottom: 8px; font-size: 24px; }
.login-card h1 span { color: var(--accent); }
.login-card .subtitle { text-align: center; color: var(--muted); font-size: 13px; margin-bottom: 28px; }
.login-error { background: rgba(239,68,68,.1); border: 1px solid var(--red); color: var(--red); padding: 8px 12px; border-radius: 6px; font-size: 13px; margin-bottom: 12px; display: none; }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; justify-content: center; align-items: center; z-index: 100; }
.modal { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 28px; width: 400px; max-width: 90vw; }
.modal h3 { margin-bottom: 16px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px; }

/* Messages */
.msg-in { color: var(--green); }
.msg-out { color: var(--accent); }
.msg-jid { color: var(--muted); font-size: 12px; }

/* Responsive */
@media (max-width: 600px) {
  .container { padding: 12px; }
  .session-grid { grid-template-columns: 1fr; }
  .login-card { padding: 24px; }
}