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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --success: #16a34a;
  --warning: #d97706;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--gray-50); color: var(--gray-800); line-height: 1.5; }

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

/* ---- Layout ---- */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1rem; }

/* ---- Navbar ---- */
.navbar { background: #fff; border-bottom: 1px solid var(--gray-200); padding: .75rem 1rem; display: flex; align-items: center; justify-content: space-between; }
.navbar-brand { font-weight: 700; font-size: 1.1rem; color: var(--gray-900); }
.navbar-links { display: flex; gap: 1rem; align-items: center; }
.navbar-links a { color: var(--gray-700); font-size: .95rem; }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; gap: .4rem; padding: .5rem 1rem; border-radius: var(--radius); font-size: .875rem; font-weight: 500; cursor: pointer; border: none; transition: background .15s, opacity .15s; text-decoration: none; line-height: 1; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-dark); }
.btn-secondary { background: var(--gray-100); color: var(--gray-700); border: 1px solid var(--gray-200); }
.btn-secondary:hover { background: var(--gray-200); }
.btn-sm { padding: .35rem .75rem; font-size: .8rem; }
.btn-lg { padding: .85rem 2rem; font-size: 1rem; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---- Cards ---- */
.card { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-header { padding: 1rem 1.25rem; border-bottom: 1px solid var(--gray-100); display: flex; align-items: center; justify-content: space-between; }
.card-title { font-size: 1rem; font-weight: 600; color: var(--gray-900); }
.card-body { padding: 1.25rem; }

/* ---- Forms ---- */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: .875rem; font-weight: 500; color: var(--gray-700); margin-bottom: .35rem; }
.form-control { width: 100%; padding: .5rem .75rem; border: 1px solid var(--gray-300); border-radius: var(--radius); font-size: .9rem; color: var(--gray-800); background: #fff; transition: border-color .15s; }
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* ---- Alerts ---- */
.alert { padding: .75rem 1rem; border-radius: var(--radius); font-size: .9rem; margin-bottom: 1rem; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .875rem; }
th { text-align: left; padding: .65rem 1rem; background: var(--gray-50); border-bottom: 1px solid var(--gray-200); font-weight: 600; color: var(--gray-600); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; white-space: nowrap; }
td { padding: .65rem 1rem; border-bottom: 1px solid var(--gray-100); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--gray-50); }

/* ---- Badges ---- */
.badge { display: inline-flex; align-items: center; padding: .2rem .6rem; border-radius: 20px; font-size: .75rem; font-weight: 600; }
.badge-active { background: #dcfce7; color: #166534; }
.badge-expired { background: #fef3c7; color: #92400e; }
.badge-disabled { background: #f3f4f6; color: #6b7280; }
.badge-pending { background: #dbeafe; color: #1e40af; }
.badge-executed { background: #dcfce7; color: #166534; }

/* ---- Copy link ---- */
.copy-wrap { display: flex; gap: .5rem; align-items: center; }
.copy-input { font-size: .8rem; color: var(--gray-500); background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: .3rem .6rem; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- Page header ---- */
.page-header { padding: 1.5rem 0 1rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.page-title { font-size: 1.4rem; font-weight: 700; color: var(--gray-900); }

/* ---- Auth page ---- */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.auth-card { width: 100%; max-width: 400px; }
.auth-logo { text-align: center; margin-bottom: 1.5rem; }
.auth-logo h1 { font-size: 1.5rem; font-weight: 700; color: var(--gray-900); }
.auth-logo p { color: var(--gray-500); font-size: .9rem; margin-top: .25rem; }

/* ---- Guest page ---- */
.guest-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 2rem 1rem; text-align: center; }
.gate-icon { font-size: 4rem; margin-bottom: 1rem; }
.gate-title { font-size: 1.8rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem; }
.gate-subtitle { color: var(--gray-500); font-size: .95rem; margin-bottom: .25rem; }
.gate-valid { color: var(--gray-500); font-size: .85rem; margin-bottom: 2rem; }
.gate-btn { font-size: 1.3rem; padding: 1.2rem 3rem; border-radius: 50px; min-width: 250px; box-shadow: var(--shadow-md); transition: transform .15s, box-shadow .15s; }
.gate-btn:not(:disabled):hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(37,99,235,.35); }
.gate-btn:not(:disabled):active { transform: translateY(0); }
.gate-message { margin-top: 1.5rem; font-size: 1rem; font-weight: 500; min-height: 1.5rem; }
.gate-message.success { color: var(--success); }
.gate-message.error { color: var(--danger); }
.invalid-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 2rem; text-align: center; }
.invalid-icon { font-size: 3.5rem; margin-bottom: 1rem; }
.invalid-title { font-size: 1.5rem; font-weight: 700; color: var(--gray-900); margin-bottom: .5rem; }
.invalid-msg { color: var(--gray-500); }

/* ---- Spacing utils ---- */
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.text-sm { font-size: .875rem; }
.text-muted { color: var(--gray-500); }
.flex { display: flex; }
.gap-2 { gap: .5rem; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }

/* ---- Logo styles ---- */
.navbar-logo { height: 40px; width: auto; object-fit: contain; display: block; }
.auth-logo-img { height: 120px; width: auto; max-width: 260px; object-fit: contain; margin-bottom: .5rem; }
.guest-logo-img { height: 120px; width: auto; max-width: 260px; object-fit: contain; }
@media (max-width: 480px) {
  .navbar-logo { height: 32px; }
  .auth-logo-img { height: 90px; }
  .guest-logo-img { height: 90px; }
}