/* =============================================
   SUBNET CALCULATOR — subnet.css
   Tool-specific styles only.
   Common styles are in tool.css
   ============================================= */

.sn-calc { width: 100%; display: flex; flex-direction: column; gap: 24px; }

/* Section card */
.sn-section {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--shadow);
}
.sn-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--teal);
    display: inline-block;
}

/* Form */
.sn-form { max-width: 480px; }

/* Radio group */
.sn-radio-group { display: flex; gap: 20px; padding: 6px 0; flex-wrap: wrap; }
.sn-radio {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    cursor: pointer;
}
.sn-radio input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--teal);
    cursor: pointer;
}

/* Select & Input */
.sn-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: var(--font-mono);
    color: var(--text);
    background: var(--white);
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
}
.sn-select:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,201,167,0.1); }

.sn-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    font-family: var(--font-mono);
    color: var(--text);
    background: var(--white);
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.sn-input:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(0,201,167,0.1); }

/* Result box */
.sn-result-box {
    margin-top: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.sn-result-header {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy2) 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    padding: 10px 18px;
}

/* Answer cards */
.sn-ans-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 14px;
    background: var(--light);
    border-bottom: 1px solid var(--border);
}
.sn-ans-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
}
.sn-ans-card.highlight { border-color: var(--teal); background: #f0fdf9; }
.sn-ans-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}
.sn-ans-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--teal);
    font-family: var(--font-mono);
    line-height: 1.3;
    word-break: break-all;
}

/* Details table */
.sn-details { padding: 14px 16px; }
.sn-table { width: 100%; }
.sn-table td:last-child {
    text-align: right;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--navy);
    word-break: break-all;
}
.sn-binary strong {
    font-size: 11px !important;
    letter-spacing: 0.5px;
    word-break: break-all;
}

/* Networks table */
.sn-networks {
    padding: 0 16px 16px;
    border-top: 1px solid var(--border);
}
.sn-networks-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--navy);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 14px 0 8px;
}
.sn-networks-scroll {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 8px;
}
.sn-net-table { width: 100%; min-width: 500px; }
.sn-net-table td { font-family: var(--font-mono); font-size: 13px; }
.sn-net-table td:not(:first-child) { text-align: center; }

@media (max-width: 768px) {
    .sn-ans-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .sn-ans-cards { grid-template-columns: 1fr 1fr; }
}