:root {
    color-scheme: dark;
    --bg: #1b1c20;
    --surface: #25272d;
    --surface-hover: #2e3138;
    --border: #3a3d45;
    --text: #e8e6e1;
    --text-muted: #a3a29d;
    --accent: #d9a441;
    --accent-strong: #f0bd5a;
    --radius: 8px;
    --content-width: 960px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.55;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
}

    a:hover {
        color: var(--accent-strong);
    }

h1, h2 {
    line-height: 1.2;
}

h1 {
    font-size: 2rem;
    margin: 0 0 0.75rem;
}

h2 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.5rem;
}

kbd {
    font: 0.85em ui-monospace, Consolas, monospace;
    padding: 0.1em 0.4em;
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    border-radius: 4px;
    background: var(--surface);
}

/* Layout */

.site-header {
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

.site-header-inner {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0.75rem 16px;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.site-name {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text);
    text-decoration: none;
}

.site-nav {
    display: flex;
    gap: 1.25rem;
}

    .site-nav a {
        color: var(--text-muted);
        text-decoration: none;
        padding: 0.25rem 0;
        border-bottom: 2px solid transparent;
    }

        .site-nav a:hover {
            color: var(--text);
        }

        .site-nav a.active {
            color: var(--text);
            border-bottom-color: var(--accent);
        }

.site-main {
    flex: 1;
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 2rem 16px 3rem;
}

.site-footer {
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    padding: 1rem 16px;
}

.breadcrumb {
    margin: 0 0 0.25rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Tools list */

.tool-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.tool-card a {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    height: 100%;
    padding: 1rem 1.1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    text-decoration: none;
}

    .tool-card a:hover {
        background: var(--surface-hover);
        border-color: var(--accent);
    }

.tool-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent);
}

.tool-title {
    font-weight: 700;
    font-size: 1.1rem;
}

.tool-desc {
    color: var(--text-muted);
    font-size: 0.92rem;
}

.tool-help ul {
    padding-left: 1.2rem;
}

.credit {
    margin-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Practice tools */

.tool-subtitle {
    font-size: 0.88rem;
    color: var(--text);
    opacity: 0.85;
}

.nickname {
    font-weight: 400;
    color: var(--text-muted);
}

.tool-meta {
    margin: -0.4rem 0 1rem;
    color: var(--accent);
    font-size: 0.95rem;
}

.practice-tool {
    display: block;
    margin: 1.5rem 0;
}

.bp-stage {
    height: min(72vh, 720px);
    min-height: 360px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

    .bp-stage canvas {
        display: block;
        touch-action: none;
        cursor: crosshair;
        outline: none;
    }

.bp-settings {
    margin-top: 0.75rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.6rem 1rem;
}

    .bp-settings summary {
        cursor: pointer;
        font-weight: 600;
    }

.bp-settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.5rem 1.5rem;
    margin-top: 0.75rem;
}

.bp-setting {
    display: flex;
    flex-direction: column;
    font-size: 0.88rem;
}

.bp-setting-label {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
}

    .bp-setting-label output {
        color: var(--text);
        font-variant-numeric: tabular-nums;
    }

.bp-setting input[type=range] {
    width: 100%;
    accent-color: var(--accent);
}

.bp-setting select {
    margin-top: 0.2rem;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.25rem;
}

.bp-setting-toggle {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

    .bp-setting-toggle input {
        accent-color: var(--accent);
    }

.bp-settings-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin: 0.75rem 0 0.25rem;
    font-size: 0.88rem;
}

.bp-key input {
    width: 2.5rem;
    margin-left: 0.4rem;
    text-align: center;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.2rem;
}

.bp-defaults {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.35rem 0.8rem;
    cursor: pointer;
}

    .bp-defaults:hover {
        border-color: var(--accent);
    }

/* Template defaults */

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,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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;
}