* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(180deg, #f4f7fb 0%, #eef2f7 100%);
    color: #1f2937;
}
a { color: #1d4ed8; text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
    background: #0f172a;
    color: #fff;
    box-shadow: 0 8px 24px rgba(15,23,42,.18);
}
.topbar .inner,
.footer .inner,
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}
.topbar .inner {
    min-height: 72px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.brand {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: .2px;
    color: #fff;
}
.brand small {
    display: block;
    font-size: 12px;
    font-weight: 400;
    color: rgba(255,255,255,.75);
    margin-top: 4px;
}
.nav-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.nav-links a {
    color: #fff;
    background: rgba(255,255,255,.10);
    padding: 9px 12px;
    border-radius: 999px;
    font-size: 14px;
}

.container {
    padding-top: 36px;
    padding-bottom: 36px;
}
.page-title {
    margin: 0 0 10px;
    font-size: 32px;
    line-height: 1.15;
}
.muted {
    color: #6b7280;
    margin: 0 0 24px;
}

.card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 18px;
    padding: 28px;
    box-shadow: 0 12px 30px rgba(15,23,42,.08);
}
.card + .card { margin-top: 20px; }

.grid {
    display: grid;
    gap: 20px;
}
.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.form-group { margin-bottom: 16px; }
label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #374151;
}
input, select, textarea {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid #d1d5db;
    border-radius: 12px;
    background: #fff;
    font-size: 15px;
    transition: .2s ease;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 4px rgba(37,99,235,.12);
}
textarea {
    min-height: 110px;
    resize: vertical;
}

.btn {
    display: inline-block;
    border: 0;
    border-radius: 12px;
    padding: 12px 18px;
    font-weight: 700;
    cursor: pointer;
    background: #2563eb;
    color: #fff;
    box-shadow: 0 10px 20px rgba(37,99,235,.18);
}
.btn.secondary {
    background: #e5e7eb;
    color: #111827;
    box-shadow: none;
}
.btn:hover { text-decoration: none; filter: brightness(.98); }

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.table-wrap {
    overflow: auto;
    border-radius: 16px;
    border: 1px solid #e5e7eb;
    background: #fff;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid #eef2f7;
    vertical-align: top;
}
th {
    background: #f8fafc;
    color: #374151;
    font-size: 14px;
}

.status {
    display: inline-block;
    padding: 7px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}
.status.active, .status.valid { background: #dcfce7; color: #166534; }
.status.expired { background: #fee2e2; color: #991b1b; }
.status.pending { background: #fef3c7; color: #92400e; }

.search-result {
    padding: 18px;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 8px 22px rgba(15,23,42,.05);
}
.search-result + .search-result { margin-top: 14px; }

.info-list {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    margin-top: 16px;
}
.info-box {
    background: #f8fafc;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    padding: 14px;
}
.info-box span {
    display: block;
    font-size: 12px;
    color: #6b7280;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 18px;
    font-weight: 600;
}
.alert.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}
.alert.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.footer {
    margin-top: 30px;
    padding: 24px 0 36px;
    color: #6b7280;
}
.footer .inner {
    border-top: 1px solid #dbe4ef;
    padding-top: 18px;
    font-size: 14px;
}

@media (max-width: 700px) {
    .topbar .inner {
        flex-direction: column;
        align-items: flex-start;
        padding-top: 16px;
        padding-bottom: 16px;
    }
    .page-title { font-size: 28px; }
    .card { padding: 20px; }
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.stats-grid > .card,
.stats-grid > a.card {
    display: block;
    width: 100%;
    margin: 0;
}

@media (max-width: 1100px) {
    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}