html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: #f8fafc;
    color: #0f172a;
}

a, .btn-link {
    color: #0f766e;
}

.btn-primary {
    color: #fff;
    background-color: #0f766e;
    border-color: #0f766e;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem rgba(13, 148, 136, 0.28);
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTYiIGhlaWdodD0iNDkiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIG92ZXJmbG93PSJoaWRkZW4iPjxkZWZzPjxjbGlwUGF0aCBpZD0iY2xpcDAiPjxyZWN0IHg9IjIzNSIgeT0iNTEiIHdpZHRoPSI1NiIgaGVpZ2h0PSI0OSIvPjwvY2xpcFBhdGg+PC9kZWZzPjxnIGNsaXAtcGF0aD0idXJsKCNjbGlwMCkiIHRyYW5zZm9ybT0idHJhbnNsYXRlKC0yMzUgLTUxKSI+PHBhdGggZD0iTTI2My41MDYgNTFDMjY0LjcxNyA1MSAyNjUuODEzIDUxLjQ4MzcgMjY2LjYwNiA1Mi4yNjU4TDI2Ny4wNTIgNTIuNzk4NyAyNjcuNTM5IDUzLjYyODMgMjkwLjE4NSA5Mi4xODMxIDI5MC41NDUgOTIuNzk1IDI5MC42NTYgOTIuOTk2QzI5MC44NzcgOTMuNTEzIDI5MSA5NC4wODE1IDI5MSA5NC42NzgyIDI5MSA5Ny4wNjUxIDI4OS4wMzggOTkgMjg2LjYxNyA5OUwyNDAuMzgzIDk5QzIzNy45NjMgOTkgMjM2IDk3LjA2NTEgMjM2IDk0LjY3ODIgMjM2IDk0LjM3OTkgMjM2LjAzMSA5NC4wODg2IDIzNi4wODkgOTMuODA3MkwyMzYuMzM4IDkzLjAxNjIgMjM2Ljg1OCA5Mi4xMzE0IDI1OS40NzMgNTMuNjI5NCAyNTkuOTYxIDUyLjc5ODUgMjYwLjQwNyA1Mi4yNjU4QzI2MS4yIDUxLjQ4MzcgMjYyLjI5NiA1MSAyNjMuNTA2IDUxWk0yNjMuNTg2IDY2LjAxODNDMjYwLjczNyA2Ni4wMTgzIDI1OS4zMTMgNjcuMTI0NSAyNTkuMzEzIDY5LjMzNyAyNTkuMzEzIDY5LjYxMDIgMjU5LjMzMiA2OS44NjA4IDI1OS4zNzEgNzAuMDg4N0wyNjEuNzk1IDg0LjAxNjEgMjY1LjM4IDg0LjAxNjEgMjY3LjgyMSA2OS43NDc1QzI2Ny44NiA2OS43MzA5IDI2Ny44NzkgNjkuNTg3NyAyNjcuODc5IDY5LjMxNzkgMjY3Ljg3OSA2Ny4xMTgyIDI2Ni40NDggNjYuMDE4MyAyNjMuNTg2IDY2LjAxODNaTTI2My41NzYgODYuMDU0N0MyNjEuMDQ5IDg2LjA1NDcgMjU5Ljc4NiA4Ny4zMDA1IDI1OS43ODYgODkuNzkyMSAyNTkuNzg2IDkyLjI4MzcgMjYxLjA0OSA5My41Mjk1IDI2My41NzYgOTMuNTI5NSAyNjYuMTE2IDkzLjUyOTUgMjY3LjM4NyA5Mi4yODM3IDI2Ny4zODcgODkuNzkyMSAyNjcuMzg3IDg3LjMwMDUgMjY2LjExNiA4Ni4wNTQ3IDI2My41NzYgODYuMDU0N1oiIGZpbGw9IiNGRkU1MDAiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPjwvZz48L3N2Zz4=) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

:root {
    --surface-panel: #ffffff;
    --surface-muted: #f1f5f9;
    --border-soft: #e2e8f0;
    --text-strong: #0f172a;
    --text-muted: #475569;
    --button-strong: #0f766e;
    --button-strong-hover: #115e59;
}

.seo-hero-shell {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--border-soft);
    border-radius: 24px;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.03);
    padding: 3.5rem 1rem;
    animation: surface-rise 0.45s ease-out;
}

.seo-hero-copy {
    color: var(--text-muted);
}

.seo-cta-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    border-radius: 14px;
    border: 1px solid var(--button-strong);
    background: var(--button-strong);
    color: #fff;
    padding: 0.95rem 1.6rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.seo-cta-primary:hover {
    background: var(--button-strong-hover);
    border-color: var(--button-strong-hover);
    color: #fff;
}

.nav-auth-link,
.nav-auth-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: 1px solid var(--border-soft);
    background: var(--surface-panel);
    color: var(--text-muted);
    padding: 0.55rem 0.9rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.nav-auth-link:hover,
.nav-auth-button:hover {
    border-color: #cbd5e1;
    background: var(--surface-muted);
    color: var(--text-strong);
}

.nav-credit-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: 9999px;
    border: 1px solid var(--border-soft);
    background: var(--surface-panel);
    color: var(--text-muted);
    padding: 0.45rem 0.8rem;
}

.seo-workbench-shell {
    border: 1px solid #dbe4ee;
    border-radius: 24px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.04);
    padding: 1.5rem;
    animation: surface-rise 0.55s ease-out;
}

.auth-page-shell {
    background:
        radial-gradient(circle at top, rgba(15, 118, 110, 0.08), transparent 28rem),
        linear-gradient(180deg, #f8fafc 0%, #eef5f3 100%);
}

.auth-card {
    border: 1px solid #dbe4ee;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 20px 45px rgba(15, 23, 42, 0.05);
    padding: 2rem 1.25rem;
}

@media (min-width: 640px) {
    .auth-card {
        padding: 2.5rem;
    }
}

.seo-workbench-shell button[id="submitBtn"] {
    background: linear-gradient(135deg, #0f766e 0%, #d97706 100%);
    border: 1px solid rgba(15, 118, 110, 0.5);
    box-shadow: 0 10px 20px rgba(13, 148, 136, 0.18);
    font-weight: 700;
    letter-spacing: 0.01em;
}

.seo-workbench-shell button[id="submitBtn"]:hover {
    filter: brightness(0.98);
}

.seo-workbench-shell button[id="submitBtn"]:disabled {
    background: #cbd5e1;
    border-color: #cbd5e1;
    box-shadow: none;
    color: #475569;
}

.seo-workbench-shell button[id="fileTab"],
.seo-workbench-shell button[id="urlTab"],
.seo-workbench-shell button[id="uploadTab"],
.seo-workbench-shell button[id="pasteBtn"] {
    border-width: 1px;
    border-radius: 14px;
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.05);
    font-weight: 600;
}

.seo-workbench-shell button[id="fileTab"].bg-emerald-600,
.seo-workbench-shell button[id="urlTab"].bg-emerald-600,
.seo-workbench-shell button[id="uploadTab"].bg-emerald-600 {
    background: #0f766e;
    border-color: #0f766e;
    color: #fff;
    box-shadow: 0 10px 20px rgba(13, 148, 136, 0.16);
}

.seo-workbench-shell button[id="fileTab"].bg-white,
.seo-workbench-shell button[id="urlTab"].bg-white,
.seo-workbench-shell button[id="uploadTab"].bg-white,
.seo-workbench-shell button[id="pasteBtn"] {
    background: #fff;
    border-color: #cbd5e1;
    color: #334155;
}

.tool-mode-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    border: 1px solid #dbe4ee;
    background: #f8fafc;
    color: #475569;
    padding: 0.7rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.tool-mode-tab.is-active {
    background: #0f766e;
    border-color: #0f766e;
    color: #ffffff;
}

.tool-mode-tab:hover {
    border-color: #94a3b8;
}

.tool-dropzone {
    border: 1px dashed #94a3b8;
    border-radius: 20px;
    background: #fcfdfd;
    padding: 2.5rem 1.25rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.tool-dropzone:hover,
.tool-dropzone.is-dragging {
    border-color: #0f766e;
    background: #f0fdfa;
}

.tool-input,
.tool-select {
    width: 100%;
    border: 1px solid #dbe4ee;
    border-radius: 14px;
    background: #ffffff;
    color: #0f172a;
    padding: 0.85rem 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.tool-input:focus,
.tool-select:focus {
    outline: none;
    border-color: #0f766e;
    box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.12);
}

.tool-submit-btn {
    width: 100%;
    border: 0;
    border-radius: 16px;
    background: linear-gradient(135deg, #0f766e 0%, #ea580c 100%);
    color: #ffffff;
    padding: 0.95rem 1.25rem;
    font-size: 1rem;
    font-weight: 700;
    transition: filter 0.2s ease, opacity 0.2s ease;
}

.tool-submit-btn:hover {
    filter: brightness(0.98);
}

.tool-submit-btn:disabled {
    background: #cbd5e1;
    color: #64748b;
    cursor: not-allowed;
}

.tool-page-shell .tool-page-content section,
.tool-page-shell .tool-page-content article,
.tool-page-shell .tool-page-content details {
    scroll-margin-top: 1rem;
}

.tool-page-shell .tool-page-content p,
.tool-page-shell .tool-page-content li {
    line-height: 1.8;
}

.tool-page-shell .tool-page-content h2,
.tool-page-shell .tool-page-content h3,
.tool-page-shell .tool-page-content h4 {
    line-height: 1.3;
}

.tool-page-shell .tool-page-content article,
.tool-page-shell .tool-page-content details,
.tool-page-shell .tool-page-content a.block,
.tool-page-shell .tool-page-content div[class*="bg-white"][class*="border"],
.tool-page-shell .tool-page-content div[class*="bg-slate-50"][class*="border"] {
    padding: 1.25rem;
}

.tool-page-shell .tool-page-content summary {
    padding: 0;
}

.legal-page-shell p,
.legal-page-shell li {
    line-height: 1.85;
}

@keyframes surface-rise {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}