:root {
    /* Palette */
    --cdx-blue-50:  #eff6ff;
    --cdx-blue-100: #dbeafe;
    --cdx-blue-300: #93c5fd;
    --cdx-blue-500: #3b82f6;
    --cdx-blue-600: #2563eb;
    --cdx-blue-700: #1d4ed8;

    --cdx-slate-50:  #f8fafc;
    --cdx-slate-100: #f1f5f9;
    --cdx-slate-200: #e2e8f0;
    --cdx-slate-300: #cbd5e1;
    --cdx-slate-400: #94a3b8;
    --cdx-slate-500: #64748b;
    --cdx-slate-600: #475569;
    --cdx-slate-700: #334155;
    --cdx-slate-800: #1e293b;
    --cdx-slate-900: #0f172a;

    --cdx-green-50:  #f0fdf4;
    --cdx-green-200: #bbf7d0;
    --cdx-green-700: #15803d;

    --cdx-red-50:    #fef2f2;
    --cdx-red-200:   #fecaca;
    --cdx-red-600:   #dc2626;

    --cdx-amber-50:  #fffbeb;
    --cdx-amber-200: #fde68a;
    --cdx-amber-700: #b45309;

    /* Semantic */
    --cdx-bg:           var(--cdx-slate-50);
    --cdx-card-bg:      #ffffff;
    --cdx-border:       var(--cdx-slate-200);
    --cdx-text:         var(--cdx-slate-900);
    --cdx-text-muted:   var(--cdx-slate-500);
    --cdx-primary:      var(--cdx-blue-600);
    --cdx-primary-dark: var(--cdx-blue-700);
}

/* Base */
html, body {
    font-size: 15px;
    color: var(--cdx-text);
    background: var(--cdx-bg);
    height: 100%;
    margin: 0;
}

h1:focus {
    outline: none;
}

a {
    color: var(--cdx-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
    color: var(--cdx-primary-dark);
}

code {
    font-size: 0.875em;
    color: #be185d;
    background: var(--cdx-slate-200);
    padding: 0.2em 0.4em;
    border-radius: 4px;
}

/* Tool layout */
.tool-header,
.tool-card {
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.tool-header {
    margin-bottom: 1.75rem;
}

.tool-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.375rem;
    color: var(--cdx-text);
}

.tool-header p {
    color: var(--cdx-text-muted);
    font-size: 0.95rem;
    margin: 0;
}

.tool-card {
    background: var(--cdx-card-bg);
    border: 1px solid var(--cdx-border);
    border-radius: 12px;
    padding: 1.75rem 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
}

.content {
    padding-top: 0;
}

/* Forms */
.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--cdx-slate-700);
    margin-bottom: 0.375rem;
}

.form-control, .form-select {
    font-size: 0.9rem;
    color: var(--cdx-text);
    background-color: var(--cdx-card-bg);
    border: 1px solid var(--cdx-slate-300);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--cdx-blue-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.16);
    outline: none;
}

.form-control[type="file"] {
    padding: 0.5rem 1rem;
    cursor: pointer;
}

.form-control[type="file"]::file-selector-button {
    background: var(--cdx-slate-100);
    border: 1px solid var(--cdx-slate-200);
    border-radius: 6px;
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--cdx-slate-600);
    margin-right: 0.75rem;
    cursor: pointer;
    transition: background 0.15s;
}

.form-control[type="file"]::file-selector-button:hover {
    background: var(--cdx-slate-200);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

/* Buttons */
.btn-primary {
    background-color: var(--cdx-primary);
    border-color: var(--cdx-primary);
    color: #ffffff;
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: 8px;
    padding: 0.5rem 1.25rem;
    transition: background-color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.btn-primary:hover {
    background-color: var(--cdx-primary-dark);
    border-color: var(--cdx-primary-dark);
    color: #ffffff;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus,
.form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* Status messages */
.status-alert {
    border-radius: 8px;
    padding: 0.875rem 1rem;
    font-size: 0.875rem;
    margin-top: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    line-height: 1.5;
}

.status-alert.status-success {
    background: var(--cdx-green-50);
    border: 1px solid var(--cdx-green-200);
    color: var(--cdx-green-700);
}

.status-alert.status-error {
    background: var(--cdx-red-50);
    border: 1px solid var(--cdx-red-200);
    color: var(--cdx-red-600);
}

.status-alert.status-warning {
    background: var(--cdx-amber-50);
    border: 1px solid var(--cdx-amber-200);
    color: var(--cdx-amber-700);
}

/* Blazor loading + error */
.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto;
}

.loading-progress circle {
    fill: none;
    stroke: var(--cdx-slate-200);
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--cdx-primary);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--cdx-text-muted);
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading");
}

#blazor-error-ui {
    color-scheme: light only;
    background: var(--cdx-red-50);
    color: var(--cdx-red-600);
    border-top: 1px solid var(--cdx-red-200);
    bottom: 0;
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.7rem 1.5rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    font-size: 0.875rem;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
    opacity: 0.6;
}

#blazor-error-ui .dismiss:hover {
    opacity: 1;
}

.blazor-error-boundary {
    background: var(--cdx-red-50);
    border: 1px solid var(--cdx-red-200);
    border-radius: 8px;
    padding: 1rem 1rem 1rem 3.5rem;
    color: var(--cdx-red-600);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='%23dc2626' viewBox='0 0 16 16'%3E%3Cpath d='M8.982 1.566a1.13 1.13 0 0 0-1.96 0L.165 13.233c-.457.778.091 1.767.98 1.767h13.713c.889 0 1.438-.99.98-1.767L8.982 1.566zM8 5c.535 0 .954.462.9.995l-.35 3.507a.552.552 0 0 1-1.1 0L7.1 5.995A.905.905 0 0 1 8 5zm.002 6a1 1 0 1 1 0 2 1 1 0 0 1 0-2z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 1rem 1rem;
    background-size: 1.4rem;
}

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

/* Floating label fix */
.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;
}