/* ---------- Buttons ---------- */

/* One button scale used everywhere for consistency:
 *   .btn     — default (toolbars, dialog primary actions)
 *   .btn-sm  — modal/section actions
 *   .btn-xs  — dense table rows
 * All share the same look; only padding/size differs. */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 12px;
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--t), color var(--t);
    white-space: nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11px; line-height: 1.4; }

.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--color-accent-hover); }

.btn-secondary {
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}
.btn-secondary:hover:not(:disabled) { background: var(--color-bg-hover); }

.btn-danger { background: #dc3545; color: #fff; }
.btn-danger:hover:not(:disabled) { background: #c82333; }

.btn-text {
    background: transparent;
    color: var(--color-accent);
    padding: 4px 8px;
    font: inherit;
    font-size: 12px;
    border: none;
    cursor: pointer;
}
.btn-text:hover { text-decoration: underline; }

input[type="text"], input[type="file"] {
    background: var(--color-bg);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font: inherit;
    width: 100%;
}