/* ============================================================================
   Solution reveal — append to style.css
   ============================================================================ */

.solution-wrap {
    max-width: 98%;
    margin: var(--space-1) var(--space-7);
}

.solution-btn {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: 13px 16px;
    min-width: 200px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: var(--tracking-wide);
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 0;
    cursor: not-allowed;
    line-height: 1;
    transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
    margin: 0;
}

.solution-btn.locked {
    cursor: not-allowed;
    opacity: 0.7;
}

.solution-btn.ready {
    cursor: pointer;
    color: var(--accent);
    border-color: var(--accent);
    background: transparent;
}

.solution-btn.ready:hover {
    background: var(--accent);
    color: var(--accent-text);
}

.solution-btn-label {
    text-transform: lowercase;
}

.solution-btn-timer {
    font-variant-numeric: tabular-nums;
    color: var(--text-tertiary);
    letter-spacing: 0.02em;
}

.solution-btn.ready .solution-btn-timer { color: inherit; }

.solution-body {
    display: none;
    margin-top: var(--space-4);
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    position: relative;
}

.solution-body::before {
    content: "solution";
    display: block;
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--accent);
    border-bottom: 1px solid var(--border);
}

.solution-body-inner {
    padding: var(--space-4);
}

.solution-body img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border);
    margin: 0 auto var(--space-4);
}

.solution-body p {
    color: var(--text-secondary);
    font-size: var(--fs-md);
    line-height: 1.6;
    margin: 0 0 var(--space-3);
}

.solution-body p:last-child { margin-bottom: 0; }

.solution-body b   { color: var(--text); font-weight: 500; }
.solution-body em  { color: var(--text); font-style: italic; }

.solution-body code-inline {
    display: inline;
    padding: 1px 6px;
    background-color: var(--bg-code);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.86em;
    white-space: nowrap;
    border: 0;
    border-radius: 0;
}