:root {
    --bg: #0d0b1e;
    --panel: #17142e;
    --panel-2: #1e1a3a;
    --text: #eceaf6;
    --muted: #8b8fa8;
    --indigo: #4f46e5;
    --violet: #7c3aed;
    --amber: #fdc46e;
    --green: #4ade80;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

.demo {
    max-width: 720px;
    margin: 0 auto;
    padding: 3rem 1.25rem 4rem;
}

header { text-align: center; margin-bottom: 2rem; }
header .logo { width: 88px; height: 88px; border-radius: 20px; }
header h1 { margin: 0.75rem 0 0.25rem; font-size: 2.4rem; letter-spacing: -0.02em; }
header .tagline { color: var(--muted); margin: 0.25rem auto 0.75rem; max-width: 34rem; line-height: 1.5; }
header nav a { color: var(--amber); text-decoration: none; font-weight: 600; }
header nav a:hover { text-decoration: underline; }
header nav span { color: var(--muted); margin: 0 0.5rem; }

textarea {
    width: 100%;
    font-size: 1.35rem;
    font-family: Consolas, "Cascadia Code", monospace;
    color: var(--text);
    background: var(--panel);
    border: 1px solid #2c2752;
    border-radius: 14px;
    padding: 1rem 1.2rem;
    resize: vertical;
    outline: none;
}
textarea:focus { border-color: var(--violet); box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25); }
textarea::placeholder { color: #565a72; }

.result {
    margin-top: 1rem;
    background: var(--panel-2);
    border: 1px solid #2c2752;
    border-radius: 14px;
    padding: 1rem 1.2rem;
    min-height: 4.6rem;
}
.result.corrected { border-color: var(--violet); }
.result-text {
    font-size: 1.35rem;
    font-family: Consolas, "Cascadia Code", monospace;
    word-break: break-word;
    min-height: 1.8rem;
}
.result-meta { margin-top: 0.5rem; display: flex; align-items: center; gap: 0.75rem; }
.badge {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
}
.badge.yes { background: rgba(74, 222, 128, 0.15); color: var(--green); }
.badge.no { background: rgba(139, 143, 168, 0.15); color: var(--muted); }
.confidence { color: var(--muted); font-size: 0.9rem; }

.examples { margin-top: 1.5rem; display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.examples-label { color: var(--muted); margin-right: 0.25rem; }
.examples button {
    font-family: Consolas, "Cascadia Code", monospace;
    font-size: 0.95rem;
    color: var(--text);
    background: var(--panel);
    border: 1px solid #2c2752;
    border-radius: 10px;
    padding: 0.4rem 0.8rem;
    cursor: pointer;
}
.examples button:hover { border-color: var(--violet); background: var(--panel-2); }

.options { margin-top: 1.5rem; color: var(--text); display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.options label { cursor: pointer; user-select: none; }
.options input { accent-color: var(--violet); margin-right: 0.35rem; }
.options .hint { color: var(--muted); font-size: 0.85rem; }

footer { margin-top: 2.5rem; text-align: center; }
footer code {
    color: var(--amber);
    background: var(--panel);
    border: 1px solid #2c2752;
    border-radius: 10px;
    padding: 0.5rem 1rem;
    font-size: 1rem;
}

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    color: #333;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 0.75rem; top: 0.5rem; }

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto;
}
.loading-progress circle {
    fill: none;
    stroke: #2c2752;
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}
.loading-progress circle:last-child {
    stroke: var(--violet);
    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: bold;
    color: var(--muted);
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}
.loading-progress-text:after { content: var(--blazor-load-percentage-text, "Loading"); }