/* ─────────────────────────────────────────────────────────────────────────────
 * Card Annotation Input — floating input bar for problem card quick notes
 *
 * WHY: Inline annotation on the 2D Problem Board. Matches fragment-log
 *      input aesthetic with --term-* tokens. Appended to document.body
 *      so it floats above board overflow boundaries.
 * ───────────────────────────────────────────────────────────────────────────── */

/* ── Floating container ──────────────────────────────────────────────────── */

.card-annotation-container {
    background: var(--term-bg-secondary, #1e293b);
    border: 1px solid var(--term-border-default, rgba(255 255 255 / 0.08));
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    padding: 4px;
    transition: border-color 0.3s ease;
}

.card-annotation-container.card-annotation-success {
    border-color: #22c55e;
    box-shadow: 0 0 8px rgba(34, 197, 94, 0.3);
}

/* ── Input row ───────────────────────────────────────────────────────────── */

.card-annotation-row {
    display: flex;
    align-items: center;
    gap: 4px;
}

.card-annotation-input {
    flex: 1;
    height: 32px;
    padding: 0 8px;
    font-family: var(--term-font-body, 'DM Sans', sans-serif);
    font-size: 0.8125rem;
    color: var(--term-fg-primary, #e2e8f0);
    background: var(--term-bg-void, rgba(0 0 0 / 0.3));
    border: 1px solid var(--term-border-default, rgba(255 255 255 / 0.08));
    border-radius: 4px;
    outline: none;
    transition: border-color 0.15s ease;
}

.card-annotation-input::placeholder {
    color: var(--term-fg-muted, #64748b);
    font-style: italic;
}

.card-annotation-input:focus {
    border-color: var(--term-accent-dim, rgba(0 255 208 / 0.3));
}

.card-annotation-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ── Submit button ───────────────────────────────────────────────────────── */

.card-annotation-submit {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--term-accent-ghost, rgba(0 255 208 / 0.08));
    border: 1px solid var(--term-accent-dim, rgba(0 255 208 / 0.2));
    border-radius: 4px;
    color: var(--term-accent, #00FFD0);
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.15s ease;
}

.card-annotation-submit:hover {
    background: var(--term-accent-dim, rgba(0 255 208 / 0.15));
    border-color: var(--term-accent, #00FFD0);
}

/* ── Annotate button inside problem card header ──────────────────────────── */

.problem-space-card-annotate {
    padding: 4px 6px;
    font-size: 14px;
    background: transparent;
    border: none;
    color: var(--sol-text-muted, #6b7280);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.15s ease;
    line-height: 1;
    opacity: 0;
}

/* Show on card hover */
.problem-card-2d:hover .problem-space-card-annotate,
.problem-card-2d:focus-within .problem-space-card-annotate {
    opacity: 1;
}

.problem-space-card-annotate:hover {
    background: var(--sol-bg-tertiary, #1f2937);
    color: var(--term-accent, #00FFD0);
}