/* Kalkulátor používá společnou paletu a tlačítka ostatních pomůcek webu. */
.subnet-tool { padding: 22px; }
.subnet-inputs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 16px; }
.subnet-field label { display: block; margin-bottom: 6px; font-size: var(--font-size-base); font-weight: 700; }
.subnet-field input { width: 100%; min-width: 0; min-height: 44px; padding: 10px 12px; border: 1px solid var(--field-border); border-radius: 4px; color: var(--text); background: var(--bg); font: var(--font-size-base)/1.5 Consolas, monospace; }
.subnet-field input[aria-invalid="true"] { border-color: var(--danger); }
.subnet-field p, .subnet-help { margin: 7px 0 0; color: var(--muted); font-size: var(--font-size-base); }
/* Rozsahy ve validačním hlášení mají vlastní řádky a na mobilu se dále zalamují. */
.subnet-status { margin: 20px 0; padding: 12px 14px; border-left: 3px solid var(--primary); background: var(--bg); font-size: var(--font-size-base); white-space: pre-line; }
.subnet-status.is-error { color: var(--danger); border-color: var(--danger); }
.subnet-result h3 { margin: 0 0 12px; font-size: 18px; }
.subnet-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 0 0 18px; }
.subnet-summary > div { padding: 12px; border: 1px solid var(--line); border-radius: 4px; background: var(--bg); }
.subnet-summary dt { color: var(--muted); font-size: var(--font-size-base); }
.subnet-summary dd { margin: 5px 0 0; color: var(--heading); font: 700 17px/1.5 Consolas, monospace; overflow-wrap: anywhere; }
.subnet-notice { padding: 12px 14px; border-left: 3px solid var(--accent); background: var(--accent-bg); color: var(--accent); font-size: var(--font-size-base); }
.subnet-details { display: grid; grid-template-columns: minmax(180px, 1fr) minmax(0, 1.4fr); margin: 0; font-size: var(--font-size-base); }
.subnet-details dt, .subnet-details dd { margin: 0; padding: 9px 12px; border-bottom: 1px solid var(--line); }
.subnet-details dt { color: var(--muted); padding-left: 0; }
.subnet-details dd { overflow-wrap: anywhere; }
.subnet-binary-panel { margin-top: 22px; padding: 16px; border: 1px solid var(--line); border-radius: 4px; background: var(--bg); }
.subnet-legend { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 0 0 12px; font-size: var(--font-size-base); }
.subnet-network-bits { color: var(--heading); }
.subnet-host-bits { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.subnet-binary-row { display: grid; grid-template-columns: minmax(120px, 1fr) minmax(0, 2fr); gap: 8px; margin-top: 8px; font-size: var(--font-size-base); }
.subnet-binary-row > span { color: var(--muted); }
.subnet-binary-row code { display: flex; flex-wrap: wrap; gap: 6px 10px; font: 13px/1.6 Consolas, monospace; }
.subnet-octet { white-space: nowrap; }
/* Statická pomůcka s hodnotami oktetu masky zůstává čitelná i na úzké obrazovce. */
.subnet-mask-reference { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.subnet-mask-reference h3 { margin: 0 0 8px; font-size: 18px; }
.subnet-mask-reference p { margin: 0 0 12px; color: var(--muted); font-size: var(--font-size-base); }
.subnet-mask-octets { width: min(100%, 280px); border-collapse: collapse; font-size: var(--font-size-base); }
.subnet-mask-octets th, .subnet-mask-octets td { padding: 4px 12px; border: 1px solid var(--line); text-align: left; }
.subnet-mask-octets th { background: var(--surface-raised); }
.subnet-mask-octets tbody tr:nth-child(odd) { background: var(--bg); }
.subnet-mask-octets td { font-variant-numeric: tabular-nums; }
.subnet-mask-octets code { font: var(--font-size-base)/1.6 Consolas, monospace; color: var(--heading); }
.subnet-explanation { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }
.subnet-explanation p { margin: 0 0 10px; color: var(--muted); font-size: var(--font-size-base); }
.subnet-explanation a { color: var(--link); text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 900px) {
    .subnet-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .subnet-summary > div:first-child { grid-column: 1 / -1; }
    .subnet-binary-row { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
    .subnet-tool { padding: 16px; }
    .subnet-inputs { grid-template-columns: minmax(0, 1fr); gap: 12px; }
    .subnet-details { grid-template-columns: minmax(0, 1fr); }
    .subnet-details dt { border-bottom: 0; padding: 10px 0 2px; font-size: var(--font-size-base); }
    .subnet-details dd { padding: 0 0 10px; }
    .subnet-binary-row code { font-size: 12px; gap: 6px; }
}