:root {
    color-scheme: light;
    --brand: #0e627c;
    --brand-hover: #137591;
    --brand-soft: #eff7fb;
    --local-brand: #255f73;
    --local-brand-hover: #1c5366;
    --local-soft: #eef8fb;
    --ink-950: #020617;
    --ink-900: #0f172a;
    --ink-800: #1e293b;
    --ink-700: #334155;
    --ink-600: #475569;
    --ink-500: #64748b;
    --ink-400: #94a3b8;
    --ink-300: #cbd5e1;
    --ink-200: #e2e8f0;
    --ink-100: #f1f5f9;
    --surface: #ffffff;
    --mint: #059669;
    --rose: #be123c;
    --shadow-soft: 0 1px 2px 0 rgb(15 23 42 / 0.04), 0 1px 3px 0 rgb(15 23 42 / 0.06);
    --shadow-card: 0 4px 12px -2px rgb(15 23 42 / 0.06), 0 2px 4px -1px rgb(15 23 42 / 0.04);
    --shadow-cta: 0 8px 24px -6px rgb(20 138 172 / 0.45), 0 2px 6px -1px rgb(20 138 172 / 0.3);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f8fafc;
    color: var(--ink-900);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    background:
        radial-gradient(80% 60% at 50% 0, rgb(14 98 124 / 0.08), transparent 60%),
        linear-gradient(180deg, #f8fafc 0%, #ffffff 58%, #f8fafc 100%);
    -webkit-font-smoothing: antialiased;
    font-feature-settings: "cv11", "ss01", "ss03";
}

a {
    color: inherit;
}

h1,
h2,
h3,
p {
    letter-spacing: 0;
}

h1 {
    margin: 0;
    max-width: 780px;
    color: var(--ink-900);
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 800;
    line-height: 1.06;
}

h1:focus {
    outline: none;
}

h2 {
    margin: 0;
    color: var(--ink-900);
    font-size: 1.375rem;
    font-weight: 750;
    line-height: 1.2;
}

h3 {
    margin: 0.75rem 0 0.5rem;
    color: var(--ink-900);
    font-size: 1.0625rem;
    font-weight: 750;
}

.shell {
    min-height: 100vh;
}

.local-topbar {
    width: min(122rem, calc(100% - 3rem));
    min-height: 4.6rem;
    margin: 1rem auto 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border: 1px solid rgb(203 213 225 / 0.75);
    border-radius: 1.25rem;
    background: rgb(255 255 255 / 0.88);
    padding: 0.75rem 1.25rem;
    box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.5), 0 8px 24px -8px rgb(15 23 42 / 0.12), 0 2px 6px -2px rgb(15 23 42 / 0.06);
    backdrop-filter: blur(20px) saturate(160%);
}

.local-brand {
    display: inline-flex;
    min-width: 0;
    align-items: center;
    gap: 0.875rem;
    color: var(--ink-900);
    font-size: 0.875rem;
    font-weight: 750;
    text-decoration: none;
}

.local-brand img {
    display: block;
    height: 2rem;
    width: auto;
}

.local-brand span {
    display: inline-flex;
    min-height: 2rem;
    align-items: center;
    border-radius: 999px;
    background: var(--local-soft);
    padding: 0 0.75rem;
    color: var(--local-brand);
    font-size: 0.75rem;
    font-weight: 800;
    white-space: nowrap;
}

.local-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
}

.local-nav a {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0 1rem;
    color: var(--ink-600);
    font-size: 0.8125rem;
    font-weight: 650;
    text-decoration: none;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.local-nav .nav-cta {
    border-color: transparent;
    background: var(--ink-950);
    color: #ffffff;
    padding: 0 1.25rem;
    box-shadow: 0 10px 24px -10px rgb(15 23 42 / 0.55);
}

.local-nav .nav-cta:hover {
    border-color: transparent;
    background: var(--ink-800);
    color: #ffffff;
}

.local-nav a:hover {
    border-color: rgb(15 23 42 / 0.18);
    background: rgb(15 23 42 / 0.05);
    color: var(--ink-900);
}

.local-page {
    width: min(72rem, calc(100% - 2rem));
    margin: 0 auto;
    padding: 3rem 0 4rem;
}

.local-page--tool {
    width: min(64rem, calc(100% - 2rem));
    padding-top: 1.25rem;
}

.local-page--compact {
    width: min(45rem, calc(100% - 2rem));
}

.tool-hero {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 0.75rem 0 1rem;
}

.tool-hero .lead {
    max-width: 38rem;
    font-size: 1rem;
}

.validator-intro {
    display: grid;
    justify-items: center;
    padding: 0.75rem 0 1.75rem;
    text-align: center;
}

.validator-intro h1 {
    max-width: none;
    font-size: clamp(2.25rem, 4vw, 2.75rem);
}

.validator-intro .lead {
    max-width: 44rem;
    margin-top: 0.875rem;
    font-size: clamp(1rem, 1.4vw, 1.0625rem);
}

.validator-intro .eyebrow {
    background: var(--local-soft);
    color: var(--local-brand);
}

.intro-meta {
    margin: 0.5rem 0 0;
    color: var(--ink-400);
    font-size: 0.875rem;
    font-weight: 650;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 22rem);
    align-items: center;
    gap: 2rem;
    padding: 1.5rem 0 2rem;
}

.hero-copy {
    min-width: 0;
}

.eyebrow {
    display: inline-flex;
    margin: 0 0 0.75rem;
    border-radius: 999px;
    background: var(--brand-soft);
    padding: 0.375rem 0.75rem;
    color: var(--brand);
    font-size: 0.6875rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.lead {
    margin: 1rem 0 0;
    max-width: 47rem;
    color: var(--ink-600);
    font-size: clamp(1rem, 2vw, 1.1875rem);
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.hero-card,
.fact,
.panel,
.result,
.issues {
    border: 1px solid var(--ink-200);
    border-radius: 1rem;
    background: var(--surface);
    box-shadow: var(--shadow-card);
}

.hero-card {
    padding: 1.5rem;
}

.hero-card strong,
.fact strong {
    display: block;
    margin-top: 0.9rem;
    color: var(--ink-900);
    font-size: 1rem;
}

.hero-card p,
.fact p,
.upload-row p,
.result p,
.issue p {
    margin: 0.5rem 0 0;
    color: var(--ink-600);
    line-height: 1.55;
}

.button,
.file-button {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 0.75rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.button:hover,
.file-button:hover {
    transform: translateY(-1px);
}

.button-primary,
.file-button {
    border: 0;
    background: var(--local-brand);
    color: white;
    padding: 0 1.25rem;
    box-shadow: var(--shadow-cta);
}

.button-primary:hover,
.file-button:hover {
    background: var(--local-brand-hover);
}

.button-secondary {
    border: 1px solid var(--ink-200);
    background: white;
    color: var(--ink-800);
    padding: 0 1rem;
    box-shadow: var(--shadow-soft);
}

.button-secondary:hover {
    border-color: var(--ink-300);
    background: var(--ink-100);
}

.button-ghost {
    border: 1px solid transparent;
    background: transparent;
    color: var(--ink-600);
    padding: 0 1rem;
}

.button-ghost:hover {
    background: rgb(15 23 42 / 0.05);
    color: var(--ink-900);
}

.file-button {
    position: relative;
    min-height: 2.5rem;
}

.file-button input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
}

.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 0.5rem;
    background: var(--brand-soft);
    padding: 0.1875rem 0.55rem;
    color: var(--brand);
    font-size: 0.6875rem;
    font-weight: 800;
    letter-spacing: 0.05em;
}

.badge-success {
    background: rgb(16 185 129 / 0.1);
    color: var(--mint);
}

.scope-strip {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.625rem;
    margin: 0 0 1rem;
    border: 1px solid var(--ink-200);
    border-radius: 1rem;
    background: white;
    padding: 0.875rem 1rem;
    box-shadow: var(--shadow-soft);
}

.scope-note {
    color: var(--ink-500);
    font-size: 0.875rem;
}

.facts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin: 0 0 1rem;
}

.fact {
    padding: 1.25rem;
}

.fact strong {
    margin-top: 0;
}

.panel {
    overflow: hidden;
    padding: 0;
}

.validator-panel {
    max-width: 62rem;
    margin: 0 auto;
}

.panel-strip {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    border-bottom: 1px solid var(--ink-200);
    background: rgb(248 252 254 / 0.92);
    padding: 0.75rem 1.25rem;
}

.panel-title-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

.panel-divider {
    width: 1px;
    height: 1.25rem;
    background: var(--ink-200);
}

.panel-label {
    color: var(--ink-500);
    font-size: 0.6875rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.panel-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.panel-tags span {
    border-radius: 0.5rem;
    background: var(--local-soft);
    padding: 0.1875rem 0.55rem;
    color: var(--local-brand);
    font-size: 0.6875rem;
    font-weight: 800;
}

.panel-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--ink-500);
    font-size: 0.875rem;
    font-weight: 650;
}

.panel-status span {
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 999px;
    background: var(--mint);
    box-shadow: 0 0 0 0.25rem rgb(5 150 105 / 0.1);
}

.upload-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    padding: 1.5rem;
}

.local-upload-zone {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem;
}

.local-drop-zone {
    display: grid;
    position: relative;
    min-height: 14rem;
    place-items: center;
    align-content: center;
    gap: 0.75rem;
    margin: 1.25rem;
    border: 2px dashed rgb(148 163 184 / 0.55);
    border-radius: 1.25rem;
    background:
        linear-gradient(180deg, rgb(255 255 255 / 0.9), rgb(248 252 254 / 0.9)),
        radial-gradient(56% 70% at 50% 0%, rgb(37 95 115 / 0.08), transparent 64%);
    padding: 1.5rem;
    cursor: pointer;
    text-align: center;
    transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.local-drop-zone:hover {
    border-color: rgb(37 95 115 / 0.55);
    background:
        linear-gradient(180deg, rgb(255 255 255 / 0.98), rgb(244 250 252 / 0.98)),
        radial-gradient(56% 70% at 50% 0%, rgb(37 95 115 / 0.12), transparent 64%);
    box-shadow: inset 0 0 0 1px rgb(37 95 115 / 0.08);
}

.local-drop-zone:focus-within {
    border-color: var(--local-brand);
    outline: 3px solid rgb(37 95 115 / 0.16);
    outline-offset: 2px;
}

.local-file-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-mark {
    display: grid;
    width: 3.5rem;
    height: 3.5rem;
    place-items: center;
    border: 1px solid var(--ink-200);
    border-radius: 1rem;
    background: #ffffff;
    color: var(--local-brand);
    box-shadow: var(--shadow-soft);
}

.upload-mark svg {
    width: 1.65rem;
    height: 1.65rem;
}

.drop-title {
    display: block;
    color: var(--ink-900);
    font-size: clamp(1.125rem, 1.6vw, 1.25rem);
    font-weight: 750;
    line-height: 1.2;
}

.drop-subtitle {
    display: block;
    margin: -0.25rem 0 0;
    color: var(--ink-400);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.45;
}

.validator-action-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    border-top: 1px solid var(--ink-200);
    background: rgb(248 250 252 / 0.85);
    padding: 0.875rem 1.25rem;
    text-align: center;
}

.validator-action-bar p {
    margin: 0;
    color: var(--ink-500);
    font-size: 0.8125rem;
    font-weight: 650;
}

.local-upload-zone p {
    margin: 0.4rem 0 0;
    color: var(--ink-500);
    font-size: 0.875rem;
}

.compact-note {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    border-top: 1px solid var(--ink-200);
    background: rgb(248 250 252 / 0.85);
    padding: 0.8rem 1.25rem;
}

.compact-note span {
    display: inline-flex;
    align-items: center;
    min-height: 1.5rem;
    border-radius: 999px;
    background: white;
    padding: 0.2rem 0.65rem;
    color: var(--ink-600);
    font-size: 0.75rem;
    font-weight: 700;
    box-shadow: inset 0 0 0 1px var(--ink-200);
}

.status {
    margin: 1rem 2rem 2rem;
    border-radius: 0.75rem;
    background: var(--local-soft);
    padding: 0.875rem 1rem;
    color: var(--local-brand);
    font-size: 0.875rem;
    font-weight: 750;
}

.error {
    margin: 1rem 2rem 2rem;
    border-radius: 0.75rem;
    background: #fff1f2;
    padding: 0.875rem 1rem;
    color: #9f1239;
    font-size: 0.875rem;
    font-weight: 750;
}

.result {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
    padding: 1.5rem;
}

.result-ok {
    border-color: #a7f3d0;
}

.result-bad {
    border-color: #fecaca;
}

.result-badge {
    min-width: 4.75rem;
    border-radius: 0.75rem;
    padding: 0.75rem 0.875rem;
    background: #ecfdf5;
    color: var(--mint);
    text-align: center;
    font-weight: 900;
}

.result-bad .result-badge {
    background: #fff1f2;
    color: var(--rose);
}

.layers {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.layer {
    min-height: 5.5rem;
    border: 1px solid var(--ink-200);
    border-radius: 1rem;
    background: white;
    padding: 1rem;
    box-shadow: var(--shadow-soft);
}

.layer span {
    display: inline-flex;
    margin-bottom: 0.625rem;
    border-radius: 999px;
    padding: 0.25rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 800;
}

.layer strong {
    display: block;
    color: var(--ink-800);
}

.layer-ok span {
    background: #ecfdf5;
    color: #047857;
}

.layer-ok {
    border-color: #a7f3d0;
    background: #d1fae5;
}

.layer-ok strong {
    color: #064e3b;
}

.layer-warn {
    border-color: #fde68a;
    background: #fffbeb;
}

.layer-warn span {
    background: #fef3c7;
    color: #b45309;
}

.layer-warn strong {
    color: #78350f;
}

.layer-bad span {
    background: #fff1f2;
    color: #e11d48;
}

.layer-bad {
    border-color: #fecdd3;
    background: #fff1f2;
}

.layer-bad strong {
    color: #881337;
}

.issues {
    margin-top: 1rem;
    padding: 1.5rem;
}

.issue {
    margin-top: 1rem;
    border-top: 1px solid var(--ink-200);
    padding-top: 1rem;
}

.issue-head {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.issue-code,
.issue-severity {
    border-radius: 999px;
    padding: 0.25rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 800;
}

.issue-code {
    background: var(--brand-soft);
    color: var(--brand);
}

.issue-severity {
    background: #fff1f2;
    color: var(--rose);
}

.suggestion {
    color: var(--ink-900) !important;
    font-weight: 750;
}

.loading-shell {
    display: grid;
    min-height: 100vh;
    place-items: center;
    align-content: center;
    gap: 0.875rem;
    color: var(--ink-500);
}

.loading-mark {
    width: 3rem;
    height: 3rem;
    border: 5px solid var(--ink-200);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

#blazor-error-ui {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
    display: none;
    border-radius: 0.75rem;
    background: #fff1f2;
    color: #9f1239;
    padding: 0.875rem 2.75rem 0.875rem 1rem;
    box-shadow: 0 16px 36px rgb(21 34 50 / 0.16);
}

#blazor-error-ui .dismiss {
    position: absolute;
    top: 0.625rem;
    right: 0.875rem;
    cursor: pointer;
    font-size: 1.25rem;
    text-decoration: none;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .button,
    .file-button,
    .local-nav a {
        transition: none;
    }

    .loading-mark {
        animation: none;
    }
}

@media (max-width: 860px) {
    .local-topbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .local-nav {
        justify-content: flex-start;
    }

    .validator-action-bar {
        align-items: stretch;
        flex-direction: column;
    }

    .hero {
        grid-template-columns: 1fr;
        padding-top: 0.5rem;
    }

    .tool-hero {
        align-items: stretch;
        flex-direction: column;
    }

    .facts {
        grid-template-columns: 1fr;
    }

    .layers {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .local-topbar,
    .local-page {
        width: min(100% - 1.5rem, 72rem);
    }

    .local-topbar {
        margin-top: 0.75rem;
    }

    .local-page--tool {
        padding-top: 1rem;
    }

    .validator-intro {
        padding-bottom: 1.5rem;
    }

    .validator-intro h1 {
        font-size: clamp(2rem, 10vw, 2.25rem);
    }

    .panel-strip {
        align-items: flex-start;
        flex-direction: column;
    }

    .panel-divider {
        display: none;
    }

    .local-nav a,
    .button,
    .file-button {
        width: 100%;
    }

    .local-nav {
        display: grid;
        width: 100%;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .local-nav a {
        width: auto;
        justify-content: center;
        padding: 0 0.75rem;
    }

    .local-nav .nav-cta {
        grid-column: 1 / -1;
    }

    .hero-actions,
    .upload-row,
    .local-upload-zone,
    .result {
        align-items: stretch;
        flex-direction: column;
    }

    .upload-row {
        padding: 1.25rem;
    }

    .local-drop-zone {
        min-height: 14rem;
        margin: 1rem;
        border-radius: 1.2rem;
        padding: 1.5rem 1rem;
    }

    .local-upload-zone {
        padding: 1.25rem;
        gap: 0.85rem;
    }

    .validator-action-bar {
        padding: 1rem;
    }

    .status,
    .error {
        margin: 1rem;
    }

    .layers {
        grid-template-columns: 1fr;
    }
}