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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: #f5f5f5;
    color: #1a1a1a;
    line-height: 1.5;
}

header {
    background: #1a2744;
    color: #fff;
    padding: 1.25rem 2rem;
}

header h1 { font-size: 1.4rem; font-weight: 600; letter-spacing: 0.02em; }
header p  { font-size: 0.85rem; color: #9aadcc; margin-top: 0.2rem; }

main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,0,0,.08);
    padding: 1.5rem;
}

.card h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.5rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 0.35rem; }
.field.full { grid-column: 1 / -1; }

label {
    font-size: 0.82rem;
    font-weight: 500;
    color: #555;
}

label .optional {
    font-weight: 400;
    color: #999;
}

input[type="file"],
input[type="number"],
textarea {
    border: 1px solid #d0d5dd;
    border-radius: 6px;
    padding: 0.5rem 0.7rem;
    font-size: 0.9rem;
    width: 100%;
    transition: border-color .15s;
    background: #fafafa;
}

input[type="file"] { padding: 0.35rem 0.5rem; cursor: pointer; }
input[type="file"]:hover { border-color: #3b6bdc; }

textarea {
    resize: vertical;
    min-height: 80px;
    font-family: monospace;
    font-size: 0.82rem;
}

input:focus, textarea:focus {
    outline: none;
    border-color: #3b6bdc;
    box-shadow: 0 0 0 3px rgba(59,107,220,.12);
}

.hint { font-size: 0.75rem; color: #888; margin-top: 0.15rem; }

.btn-row { display: flex; align-items: center; gap: 1rem; margin-top: 1rem; }

button {
    background: #1a2744;
    color: #fff;
    border: none;
    padding: 0.6rem 1.4rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background .15s;
}

button:hover:not(:disabled) { background: #253766; }
button:disabled { background: #a0a8bb; cursor: not-allowed; }

#status {
    font-size: 0.85rem;
    color: #555;
}

#status.error { color: #c0392b; font-weight: 500; }
#status.ok    { color: #27ae60; }

/* Results */
.results-meta {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.75rem;
}

.results-meta h2 { border: none; padding: 0; margin: 0; }

.badge {
    font-size: 0.78rem;
    background: #eef2ff;
    color: #3b6bdc;
    padding: 0.2rem 0.6rem;
    border-radius: 99px;
    font-weight: 500;
}

.table-wrap { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

thead th {
    text-align: left;
    padding: 0.55rem 0.75rem;
    background: #f0f4f8;
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #555;
    border-bottom: 2px solid #e0e6ef;
}

tbody tr:nth-child(even) { background: #f9fafb; }

tbody td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid #eee;
    vertical-align: top;
    word-break: break-word;
}

.as-path {
    font-family: monospace;
    font-size: 0.82rem;
    color: #2c3e50;
}

.recv-badge {
    display: inline-block;
    padding: 0.1rem 0.45rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}
.recv-ORIGIN   { background: #d5f5e3; color: #1a7a4a; }
.recv-CUSTOMER { background: #d6eaf8; color: #1a5f8f; }
.recv-PEER     { background: #fdebd0; color: #a04000; }
.recv-PROVIDER { background: #f9ebea; color: #922b21; }

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #999;
    font-size: 0.9rem;
}

#loading-bar {
    height: 3px;
    background: linear-gradient(90deg, #3b6bdc 0%, #6a9eff 50%, #3b6bdc 100%);
    background-size: 200% 100%;
    animation: shimmer 1.2s infinite;
    border-radius: 99px;
    margin-bottom: 1.5rem;
    display: none;
}
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }