:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface2: #243044;
  --border: #2d3a4f;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: linear-gradient(135deg, #0b1020 0%, #121826 50%, #0f1419 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px;
}

.container-narrow { max-width: 480px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card + .card { margin-top: 16px; }

h1, h2, h3 { font-weight: 600; margin-bottom: 8px; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.25rem; }
p { color: var(--muted); margin-bottom: 12px; }

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-success { background: rgba(34,197,94,.15); color: var(--success); }
.badge-warning { background: rgba(245,158,11,.15); color: var(--warning); }
.badge-danger { background: rgba(239,68,68,.15); color: var(--danger); }
.badge-muted { background: rgba(139,156,179,.15); color: var(--muted); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, transform .1s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }
.btn-block { width: 100%; }

.form-group { margin-bottom: 16px; }
label { display: block; margin-bottom: 6px; font-size: 0.9rem; color: var(--muted); }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,.2);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.alert-success { background: rgba(34,197,94,.12); border: 1px solid rgba(34,197,94,.3); color: #86efac; }
.alert-error { background: rgba(239,68,68,.12); border: 1px solid rgba(239,68,68,.3); color: #fca5a5; }
.alert-info { background: rgba(59,130,246,.12); border: 1px solid rgba(59,130,246,.3); color: #93c5fd; }

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
th, td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 500; font-size: 0.8rem; text-transform: uppercase; letter-spacing: .04em; }
tr:hover td { background: rgba(255,255,255,.02); }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.stat-card-danger {
  border-color: rgba(239, 68, 68, 0.55);
  background: rgba(239, 68, 68, 0.08);
  box-shadow: 0 0 0 1px rgba(239, 68, 68, 0.15);
}
.stat-card-danger .stat-value { color: var(--danger); }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--text); }
.stat-label { font-size: 0.85rem; color: var(--muted); }

.card-danger {
  border-color: rgba(239, 68, 68, 0.6);
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.12) 0%, var(--surface) 100%);
  box-shadow: 0 0 24px rgba(239, 68, 68, 0.12);
}
.card-danger h2 { color: #fca5a5; }
.card-danger-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.table-expired tr.expired-row td {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.2);
}
.table-expired tr.expired-row:hover td {
  background: rgba(239, 68, 68, 0.14);
}

.protocol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.protocol-btn {
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  color: var(--text);
}
.protocol-btn:hover, .protocol-btn.selected {
  border-color: var(--primary);
  background: rgba(59,130,246,.1);
}
.protocol-btn input { display: none; }
.protocol-btn .icon { font-size: 1.75rem; margin-bottom: 8px; }
.protocol-btn .name { font-weight: 600; }

.code-display {
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  text-align: center;
  padding: 16px;
  background: var(--surface2);
  border-radius: 8px;
  margin: 16px 0;
  user-select: all;
}

.config-box {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-family: monospace;
  font-size: 0.8rem;
  word-break: break-all;
  max-height: 120px;
  overflow-y: auto;
}

.timer {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--success);
  text-align: center;
  margin: 12px 0;
}

.qr-section {
  text-align: center;
  margin: 20px 0;
}

.qr-section label {
  display: block;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.qr-box {
  display: inline-flex;
  padding: 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.qr-box canvas,
.qr-box img,
.qr-image {
  display: block;
  border-radius: 8px;
  max-width: 100%;
  height: auto;
}

.qr-hint {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

.nav-links { display: flex; gap: 12px; flex-wrap: wrap; }

/* Guest: выбор протокола */
body.guest-page {
  background:
    radial-gradient(ellipse 70% 45% at 50% -15%, rgba(59, 130, 246, 0.16), transparent),
    linear-gradient(160deg, #0a0e17 0%, #111827 45%, #0f1419 100%);
}

.guest-card {
  margin-top: 48px;
}

.guest-card__head {
  text-align: center;
  margin-bottom: 20px;
}

.guest-card__head h1 {
  margin-bottom: 10px;
}

.guest-card__head p {
  margin-bottom: 0;
}

.guest-code {
  display: inline-block;
  margin-top: 12px;
  padding: 8px 14px;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 1rem;
  letter-spacing: 0.12em;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
}

.guest-timer-wrap {
  margin: 20px 0 8px;
  padding: 16px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: var(--radius);
  text-align: center;
}

.guest-timer-wrap .timer {
  margin: 0;
  font-size: 1.5rem;
}

.guest-timer-meta {
  margin: 8px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
  text-align: center;
}

.server-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.server-btn {
  display: block;
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 12px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  color: var(--text);
}

.server-btn:hover,
.server-btn.selected {
  border-color: #22c55e;
  background: rgba(34, 197, 94, 0.1);
}

.server-btn input { display: none; }
.server-btn__icon { font-size: 1.5rem; margin-bottom: 6px; }
.server-btn__name { font-weight: 600; font-size: 0.9rem; }

.protocol-grid--select {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.protocol-btn .hint {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 4px;
}

.protocol-btn--vless:hover,
.protocol-btn--vless.selected {
  border-color: #3b82f6;
  background: rgba(59, 130, 246, 0.12);
}

.protocol-btn--vmess:hover,
.protocol-btn--vmess.selected {
  border-color: #8b5cf6;
  background: rgba(139, 92, 246, 0.12);
}

.protocol-btn--trojan:hover,
.protocol-btn--trojan.selected {
  border-color: #f59e0b;
  background: rgba(245, 158, 11, 0.12);
}

.protocol-btn--wireguard:hover,
.protocol-btn--wireguard.selected {
  border-color: #22c55e;
  background: rgba(34, 197, 94, 0.12);
}

.guest-footer {
  margin-top: 16px;
  text-align: center;
}

.guest-footer a {
  font-size: 0.88rem;
  color: var(--muted);
}

@media (max-width: 520px) {
  .protocol-grid--select {
    grid-template-columns: 1fr;
  }

  .guest-card {
    margin-top: 24px;
  }
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .header { flex-direction: column; align-items: flex-start; }
}