:root {
    color-scheme: dark;
    --bg: #0b0d10;
    --panel: #12161b;
    --border: #232a32;
    --text: #d6e0e8;
    --muted: #7c8894;
    --accent: #3ddc97;
    --danger: #e5484d;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    line-height: 1.5;
}

.wrap {
    max-width: 760px;
    margin: 0 auto;
    padding: 24px 16px 48px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
    margin-bottom: 24px;
}

.brand {
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--accent);
}

.progress {
    color: var(--muted);
    font-size: 0.9em;
}

.panel {
    flex: 1;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 28px;
}

h1 {
    margin-top: 0;
    font-size: 1.3em;
    color: var(--accent);
}

.hint, .challenge-body {
    color: var(--text);
}

.challenge-body img, .challenge-body audio {
    max-width: 100%;
    display: block;
    margin: 16px 0;
}

.secret-form, .search-form {
    margin-top: 24px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.secret-form label,
.search-form label {
    flex-basis: 100%;
    color: var(--muted);
    font-size: 0.85em;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.secret-form input[type="text"],
.search-form input[type="text"] {
    flex: 1;
    min-width: 220px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px 12px;
    border-radius: 4px;
    font-family: inherit;
}

.secret-form button,
.search-form button {
    background: var(--accent);
    color: #06110d;
    border: none;
    padding: 10px 18px;
    border-radius: 4px;
    font-weight: 700;
    cursor: pointer;
}

.secret-form button:disabled,
.secret-form input:disabled,
.search-form button:disabled,
.search-form input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.box-results {
    list-style: none;
    margin: 20px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.box-results li {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 10px 14px;
}

.start-row {
    text-align: center;
    margin-top: 24px;
}

.btn-start {
    display: inline-block;
    background: var(--accent);
    color: #06110d;
    text-decoration: none;
    font-weight: 700;
    padding: 12px 24px;
    border-radius: 4px;
}

.alert {
    background: rgba(229, 72, 77, 0.12);
    border: 1px solid var(--danger);
    color: #ffb3b5;
    padding: 10px 14px;
    border-radius: 4px;
    margin-bottom: 12px;
}

.alert-lock {
    border-color: #d99b3f;
    background: rgba(217, 155, 63, 0.12);
    color: #ffd699;
}

code, pre {
    background: rgba(255,255,255,0.05);
    padding: 2px 6px;
    border-radius: 3px;
}

pre {
    padding: 12px;
    overflow-x: auto;
}

.foot {
    margin-top: 24px;
    color: var(--muted);
    font-size: 0.8em;
    text-align: center;
}

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

button.back {
    background: none;
    border: 1px solid var(--border);
    color: var(--muted);
    padding: 8px 14px;
    border-radius: 4px;
    cursor: pointer;
}