:root {
  --navy-950: #050b18;
  --navy-900: #0a1128;
  --navy-800: #101c3a;
  --navy-700: #16234a;
  --navy-600: #1d2f5c;
  --accent: #3b82f6;
  --accent-glow: #60a5fa;
  --accent-dark: #2563eb;
  --text-light: #e5edff;
  --text-muted: #93a3c4;
  --danger: #ef4444;
  --success: #22c55e;
  --radius: 14px;
}

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

body {
  background: radial-gradient(circle at top, var(--navy-800) 0%, var(--navy-950) 70%);
  color: var(--text-light);
  font-family: 'Segoe UI', Roboto, -apple-system, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============ NAVBAR ============ */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 40px;
  background: rgba(10, 17, 40, 0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--navy-600);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-logo {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text-light);
}
.nav-logo span { color: var(--accent-glow); }

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  margin-left: 26px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent-glow); }

.btn-nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 8px;
}
.btn-nav-logout { color: var(--danger) !important; }

/* ============ MAIN ============ */
.main-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
}

/* ============ AUTH CARD ============ */
.auth-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 80vh;
}

.auth-card {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-900));
  border: 1px solid var(--navy-600);
  border-radius: var(--radius);
  padding: 44px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(59,130,246,0.05);
}

.auth-logo {
  text-align: center;
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 6px;
}
.auth-logo span { color: var(--accent-glow); }

.auth-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 30px;
  font-size: 14px;
}

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--navy-700);
  border: 1px solid var(--navy-600);
  border-radius: 10px;
  color: var(--text-light);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.2);
}
.form-group input[readonly] {
  color: var(--accent-glow);
  font-family: 'Consolas', monospace;
  cursor: text;
}

.btn-primary {
  width: 100%;
  padding: 13px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border: none;
  border-radius: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}
.btn-primary:hover { opacity: 0.92; }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  width: 100%;
  padding: 12px;
  background: transparent;
  border: 1px solid var(--navy-600);
  border-radius: 10px;
  color: var(--text-light);
  font-weight: 600;
  cursor: pointer;
}

.auth-footer-link {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-muted);
}
.auth-footer-link a { color: var(--accent-glow); text-decoration: none; font-weight: 600; }

.alert {
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 13px;
  margin-bottom: 18px;
}
.alert-error { background: rgba(239,68,68,0.12); border: 1px solid rgba(239,68,68,0.4); color: #fca5a5; }
.alert-success { background: rgba(34,197,94,0.12); border: 1px solid rgba(34,197,94,0.4); color: #86efac; }

/* ============ CARDS / GRID (dashboard, pricing, admin) ============ */
.page-title { font-size: 28px; font-weight: 800; margin-bottom: 6px; }
.page-subtitle { color: var(--text-muted); margin-bottom: 30px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  width: 100%;
  max-width: 1100px;
}

.card {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-900));
  border: 1px solid var(--navy-600);
  border-radius: var(--radius);
  padding: 26px;
}

.card h3 { margin-bottom: 10px; }
.card .muted { color: var(--text-muted); font-size: 13px; }

/* Pricing */
.price-card {
  text-align: center;
  border: 1px solid var(--navy-600);
  position: relative;
  overflow: hidden;
}
.price-card.featured { border-color: var(--accent); box-shadow: 0 0 30px rgba(59,130,246,0.15); }
.price-tag { font-size: 40px; font-weight: 800; margin: 14px 0; }
.price-tag small { font-size: 16px; color: var(--text-muted); }

/* Badge */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}
.badge-active { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-inactive { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-expired { background: rgba(148,163,184,0.15); color: var(--text-muted); }

/* Table */
table { width: 100%; border-collapse: collapse; margin-top: 16px; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--navy-600); font-size: 14px; }
th { color: var(--text-muted); font-weight: 600; }

.btn-sm {
  padding: 6px 12px;
  border-radius: 6px;
  border: none;
  font-size: 12px;
  cursor: pointer;
  font-weight: 600;
}
.btn-danger { background: rgba(239,68,68,0.15); color: var(--danger); }
.btn-warn { background: rgba(234,179,8,0.15); color: #eab308; }

/* Connect / QR page */
.qr-box {
  background: #fff;
  padding: 16px;
  border-radius: 12px;
  display: inline-block;
  margin: 20px 0;
}
.qr-box img { width: 260px; height: 260px; display: block; }

.tabs { display: flex; gap: 10px; margin-bottom: 20px; }
.tab-btn {
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid var(--navy-600);
  background: var(--navy-700);
  color: var(--text-muted);
  cursor: pointer;
  font-weight: 600;
}
.tab-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.footer {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--navy-600);
}

.status-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; }
.status-connected { background: var(--success); }
.status-disconnected { background: var(--danger); }
.status-connecting { background: #eab308; }

/* ============ RESPONSIVE TABLES ============ */
/* Wrap every <table> in <div class="table-responsive"> so wide tables scroll
   horizontally on narrow screens instead of squeezing/overflowing the page. */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-responsive table { min-width: 560px; }

/* ============ MOBILE / ANDROID (<= 768px, phones) ============ */
@media (max-width: 768px) {
  .navbar {
    padding: 14px 16px;
    flex-wrap: wrap;
    row-gap: 10px;
  }
  .nav-logo { font-size: 22px; }
  .nav-links {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    justify-content: flex-start;
  }
  .nav-links a { margin-left: 0; font-size: 14px; }
  .btn-nav-cta { padding: 7px 14px; }

  .main-container { padding: 24px 14px; }

  .auth-card { padding: 30px 22px; max-width: 100%; }
  .auth-logo { font-size: 26px; }

  .page-title { font-size: 22px; }
  .page-subtitle { margin-bottom: 20px; }

  .card { padding: 18px; }
  .card-grid { grid-template-columns: 1fr; gap: 14px; }

  .price-tag { font-size: 32px; }

  th, td { padding: 10px; font-size: 13px; white-space: nowrap; }

  .qr-box { padding: 10px; width: 100%; max-width: 260px; margin-left: auto; margin-right: auto; }
  .qr-box img { width: 100%; height: auto; max-width: 240px; }

  .tabs { flex-wrap: wrap; }
  .tab-btn { flex: 1 1 auto; padding: 10px 14px; font-size: 14px; }

  .btn-sm { padding: 8px 12px; font-size: 13px; }
}

/* ============ VERY SMALL PHONES (<= 380px) ============ */
@media (max-width: 380px) {
  .nav-logo { font-size: 20px; }
  .nav-links a { font-size: 13px; }
  .page-title { font-size: 20px; }
  .auth-card { padding: 24px 16px; }
  .card { padding: 14px; }
}