:root {
    --app-radius: 18px;
    --app-shadow: 0 10px 32px rgba(15, 23, 42, .07);
    --app-border: color-mix(in srgb, var(--bs-border-color) 80%, transparent);
    --app-muted-bg: color-mix(in srgb, var(--bs-body-bg) 88%, var(--bs-secondary-bg));
}

html { scroll-behavior: smooth; }
body { min-height: 100vh; background: radial-gradient(circle at top right, rgba(13,110,253,.08), transparent 26rem), var(--bs-tertiary-bg); }
.app-navbar { background: color-mix(in srgb, var(--bs-body-bg) 92%, transparent); backdrop-filter: blur(14px); }
.brand-icon { width: 38px; height: 38px; display: inline-grid; place-items: center; border-radius: 12px; color: #fff; background: linear-gradient(135deg, #0d6efd, #6f42c1); box-shadow: 0 7px 18px rgba(13,110,253,.24); }
.navbar-brand small { font-size: .72rem; font-weight: 400; }
.language-box { min-width: 190px; }
.btn-icon { width: 38px; height: 38px; display: inline-grid; place-items: center; padding: 0; }
.hero-card, .app-card, .footer-shell { background: var(--bs-body-bg); border: 1px solid var(--app-border); border-radius: var(--app-radius); box-shadow: var(--app-shadow); }
.hero-card { padding: 1.25rem; }
.capability-summary { min-height: 66px; padding: .85rem 1rem; border-radius: 14px; background: var(--app-muted-bg); }
.capability-badges { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .5rem; }
.status-dot { width: .55rem; height: .55rem; border-radius: 50%; display: inline-block; margin-right: .35rem; background: var(--bs-secondary); }
.status-dot.ok { background: var(--bs-success); }
.status-dot.no { background: var(--bs-danger); }

.tool-nav-wrap { overflow: hidden; }
.tool-nav { display: flex; gap: .55rem; overflow-x: auto; padding: .2rem .05rem .6rem; scrollbar-width: thin; scroll-snap-type: x proximity; }
.tool-tab { flex: 0 0 auto; scroll-snap-align: start; border: 1px solid var(--app-border); background: var(--bs-body-bg); color: var(--bs-body-color); border-radius: 999px; padding: .68rem .95rem; display: inline-flex; align-items: center; gap: .5rem; font-weight: 600; transition: .18s ease; box-shadow: 0 3px 12px rgba(15,23,42,.04); }
.tool-tab:hover { transform: translateY(-1px); border-color: var(--bs-primary); color: var(--bs-primary); }
.tool-tab.active { color: #fff; background: var(--bs-primary); border-color: var(--bs-primary); box-shadow: 0 7px 18px rgba(13,110,253,.22); }
.tool-panel { display: none; }
.tool-panel.active { display: block; animation: panelIn .18s ease; }
@keyframes panelIn { from { opacity: .4; transform: translateY(3px); } to { opacity: 1; transform: translateY(0); } }

.app-card { padding: 1.1rem; }
.card-heading { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; padding-bottom: 1rem; margin-bottom: 1rem; border-bottom: 1px solid var(--app-border); }
.form-label { font-weight: 650; margin-bottom: .38rem; }
.form-control, .form-select, .input-group > .btn { min-height: 44px; }
textarea.form-control { min-height: auto; resize: vertical; }
.form-control:focus, .form-select:focus { box-shadow: 0 0 0 .2rem rgba(13,110,253,.12); }
.form-text { line-height: 1.4; }
.unit { font-size: .76rem; color: var(--bs-secondary-color); font-weight: 500; }
.advanced-box { border: 1px dashed var(--app-border); border-radius: 14px; padding: .8rem .9rem; background: var(--app-muted-bg); }
.advanced-box summary { cursor: pointer; font-weight: 650; }

.result-card { min-height: 360px; position: relative; overflow: hidden; }
.result-empty { min-height: 300px; display: grid; place-items: center; align-content: center; gap: .7rem; color: var(--bs-secondary-color); text-align: center; padding: 2rem; }
.result-empty i { font-size: 1.5rem; opacity: .55; }
.result-head { display: flex; justify-content: space-between; gap: .8rem; align-items: center; padding-bottom: .85rem; border-bottom: 1px solid var(--app-border); margin-bottom: .85rem; }
.result-title { font-weight: 700; }
.result-output { word-break: break-all; white-space: pre-wrap; background: var(--app-muted-bg); border: 1px solid var(--app-border); border-radius: 12px; padding: .85rem; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .84rem; max-height: 360px; overflow: auto; }
.metric-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: .7rem; margin-bottom: .9rem; }
.metric { background: var(--app-muted-bg); border: 1px solid var(--app-border); border-radius: 12px; padding: .75rem; }
.metric-label { color: var(--bs-secondary-color); font-size: .76rem; }
.metric-value { font-weight: 750; font-size: 1rem; margin-top: .2rem; word-break: break-word; }
.kv-table { width: 100%; margin: 0; }
.kv-table td { padding: .5rem .25rem; border-bottom: 1px solid var(--app-border); vertical-align: top; }
.kv-table td:first-child { width: 42%; color: var(--bs-secondary-color); }
.kv-table td:last-child { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; word-break: break-all; }
.result-success { border-left: 4px solid var(--bs-success); }
.result-danger { border-left: 4px solid var(--bs-danger); }
.batch-list { display: grid; gap: .65rem; max-height: 470px; overflow: auto; padding-right: .2rem; }
.batch-item { padding: .75rem; border: 1px solid var(--app-border); border-radius: 12px; background: var(--app-muted-bg); }
.batch-item code { display: block; white-space: pre-wrap; word-break: break-all; margin-top: .35rem; }

.env-card { height: 100%; padding: 1rem; border: 1px solid var(--app-border); border-radius: 14px; background: var(--app-muted-bg); }
.env-card h3 { font-size: .95rem; margin-bottom: .8rem; }
.env-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .4rem 0; border-bottom: 1px solid var(--app-border); }
.env-row:last-child { border-bottom: 0; }
.env-row code { text-align: right; word-break: break-word; }

.footer-shell { overflow: hidden; }
.footer-toggle { width: 100%; border: 0; background: transparent; color: var(--bs-body-color); padding: .95rem 1.1rem; display: flex; align-items: center; justify-content: space-between; text-align: left; font-weight: 650; }
.footer-toggle[aria-expanded="true"] .toggle-chevron { transform: rotate(180deg); }
.toggle-chevron { transition: transform .2s ease; }
.footer-details { border-top: 1px solid var(--app-border); padding: 1rem 1.1rem; }
.footer-copyright { border-top: 1px solid var(--app-border); padding: .75rem 1.1rem; text-align: center; }

.is-loading { pointer-events: none; opacity: .7; }
.action-submit .spinner-border { width: 1rem; height: 1rem; border-width: .14rem; }

@media (max-width: 767.98px) {
    body { padding-bottom: env(safe-area-inset-bottom); }
    .navbar-brand strong { font-size: .92rem; }
    .navbar-brand small { display: none !important; }
    .brand-icon { width: 34px; height: 34px; }
    .language-box { min-width: 0; width: 150px; }
    .hero-card { padding: 1rem; }
    .hero-card h1 { font-size: 1.25rem; }
    .tool-nav { margin-left: -.25rem; margin-right: -.25rem; padding-left: .25rem; padding-right: .25rem; }
    .tool-tab { padding: .62rem .8rem; font-size: .88rem; }
    .app-card { padding: .9rem; border-radius: 15px; }
    .card-heading { align-items: center; }
    .result-card { min-height: 260px; }
    .result-empty { min-height: 220px; }
    .metric-grid { grid-template-columns: 1fr 1fr; }
    .input-group > textarea.form-control + .btn { align-self: stretch; }
}

@media (max-width: 420px) {
    .language-box { width: 132px; }
    .language-box .form-select { font-size: .78rem; padding-left: .55rem; padding-right: 1.7rem; }
    .btn-icon { width: 36px; height: 36px; }
    .metric-grid { grid-template-columns: 1fr; }
}