html, body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: #f5f6fa;
    color: #1f2330;
    line-height: 1.5;
}

h1:focus {
    outline: none;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1rem 4rem;
}

.hero {
    text-align: center;
    margin-bottom: 2rem;
}

.hero h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.hero .lead {
    margin: 0.5rem 0 0;
    color: #5a6072;
    font-size: 1.1rem;
}

.upload-card {
    background: #fff;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    margin-bottom: 1.5rem;
}

.file-input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    overflow: hidden;
}

.upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 3rem 1rem;
    border: 2px dashed #c9cee0;
    border-radius: 12px;
    background: #fafbff;
    color: #4a5072;
    cursor: pointer;
    transition: all 0.15s ease;
}

.upload-zone:hover {
    border-color: #5a6bf0;
    background: #f3f5ff;
    color: #2a3296;
}

.upload-zone.busy {
    cursor: wait;
    border-style: solid;
    border-color: #5a6bf0;
}

.upload-zone strong {
    font-size: 1.1rem;
    color: #1f2330;
}

.upload-zone small {
    color: #7a809a;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid #d8dcef;
    border-top-color: #5a6bf0;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.error-box {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: #ffeded;
    border-left: 4px solid #e04040;
    border-radius: 4px;
    color: #8a1f1f;
}

.requirements {
    background: #fff;
    border-radius: 16px;
    padding: 1.5rem 2rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.requirements h2 {
    margin-top: 0;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #5a6072;
}

.requirements ul {
    margin: 0;
    padding-left: 1.25rem;
    columns: 2;
    column-gap: 2rem;
}

.requirements li {
    margin: 0.25rem 0;
    break-inside: avoid;
}

/* Result page */
.result-page {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    border-radius: 16px;
    color: #fff;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.result-header.pass { background: linear-gradient(135deg, #2ea05a, #1c7a45); }
.result-header.warning { background: linear-gradient(135deg, #f0a000, #c47800); }
.result-header.fail { background: linear-gradient(135deg, #e04848, #a82828); }
.result-header.unknown, .result-header.info { background: linear-gradient(135deg, #5a6072, #353a4a); }

.result-summary {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.result-summary h2 {
    margin: 0;
    font-size: 1.5rem;
}

.result-summary .filename {
    margin: 0.25rem 0 0;
    opacity: 0.85;
    font-size: 0.95rem;
}

.result-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255,255,255,0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: bold;
}

.btn-reset {
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.35);
    color: #fff;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.15s ease;
}
.btn-reset:hover { background: rgba(255,255,255,0.32); }

.score-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.score-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    border-left: 6px solid #ccc;
}

.score-card.pass { border-color: #2ea05a; }
.score-card.warning { border-color: #f0a000; }
.score-card.fail { border-color: #e04848; }

.score-num {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.score-label {
    color: #5a6072;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    margin-top: 0.25rem;
}

.meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.5rem 1.5rem;
    background: #fff;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    color: #4a5072;
    font-size: 0.95rem;
}

.category-title {
    margin: 0.5rem 0 -0.5rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #7a809a;
}

.check-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.check-row {
    display: grid;
    grid-template-columns: 48px 1fr auto;
    gap: 1rem;
    align-items: start;
    background: #fff;
    padding: 1rem 1.25rem;
    border-radius: 10px;
    border-left: 6px solid #ccc;
    box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}

.check-row.pass { border-color: #2ea05a; }
.check-row.warning { border-color: #f0a000; }
.check-row.fail { border-color: #e04848; }
.check-row.info { border-color: #5a8de0; }
.check-row.unknown { border-color: #a0a0a0; }

.check-indicator {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
    font-size: 1.1rem;
}
.check-row.pass .check-indicator { background: #2ea05a; }
.check-row.warning .check-indicator { background: #f0a000; }
.check-row.fail .check-indicator { background: #e04848; }
.check-row.info .check-indicator { background: #5a8de0; }
.check-row.unknown .check-indicator { background: #a0a0a0; }

.check-name {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.check-message {
    color: #2a2f40;
}

.check-detail {
    margin-top: 0.35rem;
    font-family: ui-monospace, "Consolas", monospace;
    font-size: 0.85rem;
    color: #5a6072;
    background: #f7f8fc;
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
}

.check-reco {
    margin-top: 0.4rem;
    color: #6a4a00;
    background: #fff7e0;
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.check-badge {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 0.25rem 0.55rem;
    border-radius: 100px;
    align-self: start;
    white-space: nowrap;
}
.check-row.pass .check-badge { background: #def3e3; color: #1c7a45; }
.check-row.warning .check-badge { background: #fff0d2; color: #8a5800; }
.check-row.fail .check-badge { background: #ffd9d9; color: #a82828; }
.check-row.info .check-badge { background: #dfe9fa; color: #2a4d8a; }
.check-row.unknown .check-badge { background: #ececec; color: #555; }

@media (max-width: 640px) {
    .requirements ul { columns: 1; }
    .score-grid { grid-template-columns: 1fr; }
    .check-row { grid-template-columns: 40px 1fr; }
    .check-row .check-badge { grid-column: 2; justify-self: start; }
    .result-header { flex-direction: column; gap: 1rem; align-items: stretch; }
}

.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,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) 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;
}