/* HTTP header viewer. Needs /assets/css/modern-tool-cards.css (tokens + .cat-website accent). */
.hv, .hv *, .hv *::before, .hv *::after { box-sizing: border-box; }
.hv { display: grid; gap: 1.25rem; }
.hv-panel { background: var(--tc-bg); border: 1px solid var(--tc-border); border-radius: 20px; box-shadow: var(--tc-shadow); overflow: hidden; }
.hv-panel__head { display: flex; align-items: center; gap: .6rem; padding: .9rem 1.25rem; background: var(--tc-surface); border-bottom: 1px solid var(--tc-border); }
.hv-panel__head h3 { margin: 0; font-size: .8rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--tc-muted); }
.hv-panel__head > i { color: var(--accent); font-size: 1.1rem; }
.hv-body { display: grid; gap: .9rem; padding: 1.25rem; }
.hv-label { margin: 0; font-size: .8rem; font-weight: 700; color: var(--tc-muted); }
.hv-hint { margin: -.3rem 0 0; font-size: .78rem; font-style: italic; color: var(--tc-muted); }
.hv-row { display: flex; flex-wrap: wrap; gap: .6rem; }
.hv-input { flex: 1 1 18rem; min-width: 0; height: 3rem; padding: 0 1rem; font: inherit; font-size: .95rem; color: var(--tc-text); background: var(--tc-bg); border: 1px solid var(--tc-border); border-radius: 12px; }
.hv-input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.hv-input.is-invalid { border-color: #dc2626; }
.hv-opts { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.5rem; }
.hv-select { display: flex; align-items: center; gap: .6rem; margin: 0; font-size: .82rem; font-weight: 700; color: var(--tc-muted); }
.hv-select select { height: 2.5rem; padding: 0 .7rem; font: inherit; font-size: .88rem; font-weight: 500; color: var(--tc-text); background: var(--tc-bg); border: 1px solid var(--tc-border); border-radius: 10px; }
.hv-select select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.hv-check { display: flex; align-items: center; gap: .5rem; margin: 0; font-size: .88rem; font-weight: 600; color: var(--tc-text); cursor: pointer; }
.hv-check input { width: 1.05rem; height: 1.05rem; accent-color: var(--accent); }
.hv-error { margin: 0; font-size: .88rem; font-weight: 600; color: #dc2626; }
.hv-error[hidden], .hv-out[hidden], .hv-none[hidden], .hv tr[hidden] { display: none; }

.hv-btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; height: 3rem; padding: 0 1.4rem; font-size: .92rem; font-weight: 600; color: var(--tc-text); background: var(--tc-bg); border: 1px solid var(--tc-border); border-radius: 12px; cursor: pointer; }
.hv-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.hv-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.hv-btn--small { height: 2.5rem; padding: 0 1rem; font-size: .84rem; }
.hv-btn--primary { color: #fff; background: var(--accent); border-color: var(--accent); }
.hv-btn--primary:hover:not(:disabled) { color: #fff; filter: brightness(1.08); }
.hv-btn:disabled { opacity: .75; cursor: default; }
.hv-btn.is-loading::after { content: ""; width: 1em; height: 1em; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: hv-spin .7s linear infinite; }
@keyframes hv-spin { to { transform: rotate(360deg); } }

.hv-out { display: grid; gap: 1.1rem; }
.hv-title { margin: 0; font-size: 1.05rem; font-weight: 700; overflow-wrap: anywhere; }
.hv-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); gap: .7rem; }
.hv-tile { display: grid; gap: .1rem; padding: .8rem 1rem; background: var(--tc-surface); border: 1px solid var(--tc-border); border-radius: 14px; min-width: 0; }
.hv-tile__v { font-size: 1.05rem; font-weight: 700; color: var(--tc-text); overflow-wrap: anywhere; }
.hv-tile__l { font-size: .75rem; font-weight: 600; color: var(--tc-muted); }
.hv-warn { margin: 0; padding: .65rem .9rem; font-size: .9rem; color: #92400e; background: rgba(245, 158, 11, .13); border-radius: 12px; }
.hv-warn--bad { color: #991b1b; background: rgba(220, 38, 38, .1); font-weight: 600; }

.hv-sec { display: grid; gap: .45rem; margin: 0; padding: 1rem 1.25rem 1.25rem; list-style: none; }
.hv-sec__item { display: flex; align-items: flex-start; gap: .6rem; padding: .55rem .8rem; font-size: .88rem; border-radius: 10px; color: var(--tc-text); }
.hv-sec__item i { flex: none; margin-top: .1rem; font-size: 1.1rem; }
.hv-sec__item--yes { background: rgba(22, 163, 74, .09); } .hv-sec__item--yes i { color: #16a34a; }
.hv-sec__item--no { background: var(--tc-surface); } .hv-sec__item--no i { color: var(--tc-muted); }
.hv-sec__item--warn { background: rgba(245, 158, 11, .13); } .hv-sec__item--warn i { color: #d97706; }

.hv-bar { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }
.hv-filter { flex: 1 1 16rem; margin: 0; }
.hv-filter input { width: 100%; height: 2.5rem; padding: 0 .9rem; font: inherit; font-size: .88rem; color: var(--tc-text); background: var(--tc-bg); border: 1px solid var(--tc-border); border-radius: 10px; }
.hv-filter input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.hv-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.hv-blocks { display: grid; gap: 1rem; }
.hv-card { background: var(--tc-bg); border: 1px solid var(--tc-border); border-left-width: 5px; border-radius: 14px; box-shadow: var(--tc-shadow); overflow: hidden; }
.hv-card--ok { border-left-color: #16a34a; } .hv-card--redirect { border-left-color: #0ea5e9; } .hv-card--bad { border-left-color: #dc2626; }
.hv-card__head { display: flex; align-items: flex-start; gap: .8rem; padding: .9rem 1rem; background: var(--tc-surface); border-bottom: 1px solid var(--tc-border); }
.hv-badge { flex: none; min-width: 3.2rem; padding: .2rem .6rem; font-size: .8rem; font-weight: 700; text-align: center; color: #fff; border-radius: 999px; }
.hv-badge--ok { background: #16a34a; } .hv-badge--redirect { background: #0ea5e9; } .hv-badge--bad { background: #dc2626; }
.hv-card__info { display: grid; gap: .15rem; min-width: 0; }
.hv-card__line { font-size: .95rem; color: var(--tc-text); overflow-wrap: anywhere; }
.hv-card__url { font-size: .85rem; color: var(--accent); overflow-wrap: anywhere; }
.hv-card__meta { font-size: .78rem; color: var(--tc-muted); }
.hv-card__err { font-size: .85rem; font-weight: 600; color: #dc2626; }
.hv-tablewrap { overflow-x: auto; }
.hv-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
.hv-table th, .hv-table td { padding: .55rem 1rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--tc-border); }
.hv-table tr:last-child th, .hv-table tr:last-child td { border-bottom: 0; }
.hv-table tr:nth-child(even) { background: var(--tc-surface); }
.hv-table th { width: 14rem; max-width: 40%; font-weight: 700; color: var(--tc-text); overflow-wrap: anywhere; }
.hv-table td { color: var(--tc-muted); overflow-wrap: anywhere; word-break: break-word; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.hv-none { margin: 0; font-size: .9rem; color: var(--tc-muted); }
.hv-note { margin: 0; padding: .75rem 1rem; font-size: .78rem; color: var(--tc-muted); background: var(--tc-surface); border: 1px solid var(--tc-border); border-radius: 12px; }
.hv-note i { margin-right: .3rem; color: var(--accent); }
@media (max-width: 600px) { .hv-btn--primary { width: 100%; } .hv-table th, .hv-table td { display: block; width: auto; max-width: none; border-bottom: 0; padding: .35rem 1rem; } .hv-table tr { display: block; padding: .3rem 0; border-bottom: 1px solid var(--tc-border); } }
@media (prefers-reduced-motion: reduce) { .hv-btn.is-loading::after { animation: none; } }